show-and-tell

[cobalt dove]

(which are very, very similar, haha)

[unborn sphinx]

neopixels is a brand name for an assortment of devices containing WS2812b

[cobalt dove]

Every Neopixel item I've ever got from Adafruit has been WS2812b

Dotstar are APA-102 which is vastly superior (love em! Wish they made them like WS2811 strips!)

[lusty siren]

I like the concept of using the ICs to control individual strips (https://www.adafruit.com/product/1378)

[unborn sphinx]

there's also WS2812 not b, SK6812, SK6812RGBW, SK6812MINI, and I think a handful of alternate badges for identical products sourced from different manufacturers

[upbeat geyser]

DotStar strips are available (https://www.adafruit.com/product/2241)

[unborn sphinx]

the main thing about neopixels that separates them from dotstars is the way you send data out to the strip, neopixels are 1wire devices while dotstars are 2 wire, this has a big impact on the performance of the data protocol so dotstars are faster and that's super useful

comes at a price though~

[cobalt dove]

@upbeat geyser I mean "strands" like WS2811 ones. All the APA102 stuff seems to come in two forms: flat strips and individual solderable 5050s

Oh, there's also flexible matrix-like displays made with APA102s

[upbeat geyser]

I'm not sure what you mean by strands here. I figured you meant the flat strips, which is how I usually see WS2811s packaged.

[unborn sphinx]

there's one form of neopixels where it's the SMD in a little plastic housing along a wire, is that it?

[lusty siren]

I've seen them strung up like christmas lights before

[unborn sphinx]

https://www.adafruit.com/product/3630

seems incredibly expensive, but I totally understand the cost

[strong phoenix]

@cobalt dove those look great!

[cobalt dove]

@strong phoenix Thanks!

[cobalt dove]

It's done! https://gfycat.com/SlimFalseApisdorsatalaboriosa

All the letters can be disconnected and rearranged too! So if she wants it can serve a dual purpose: ROADWAY. Or BOAR DAY, WAY BRO, AWARD BOY, YODA BRA

[shy shale]

That's awesome!

[lusty siren]

That's amazing @cobalt dove

Not a tech show and tell, but...

That is rice krispies made with coco pebbles, then a layer of a peanut butter filling, topped with melted chocolate chips

[leaden frost]

@lusty siren Sparky says "You need more Snap, Crackle and Pop."

[leaden frost]

@cobalt dove Nice! Is that a separate set of white LEDs as the bulbs inside the letters and the colors are backlit from something else?

[cobalt dove]

@leaden frost It's just WS2811 "pixels" stuck through some 12.6mm-sized holes in white plastic letters 😁

[plush gorge]

Machining my first parts on my mini lathe. 😃

Lol, a little free hand machining. 😄

[upbeat geyser]

Nice!

I'm tempted to get one of those Sherline lathes (I have their milling machine which I'm converting to manual/CNC).

[plush gorge]

I only just got this and am just learning, I'd still totally recommend it! What are u using to automate ur mill @upbeat geyser ? I have an old flashcut system that I'm working on getting working to automate my lathe.

[upbeat geyser]

I'm using an Arduino Mega running GRBL and a QuadStepper driver. It's (of course) a work in progress.

I have a related project to computer control a K-40 style laser cutter with an EiBot board.

[plush gorge]

Lol, of course. You should go on show n tell Wednesday night n show urs off. I'd love to see it. I'm going to show mine this week, assuming I can get home in time that is. 😕

[upbeat geyser]

When I get them in more demonstratable shape, I intend to.

[plush gorge]

O wow! JUST read about the laser cutter project, shld show that too.

Lol, that's part of the fun, show it in stages. I doubt mine's going to be "demonstratable" by Wednesday, but I'm still going to show it. N then I'll show it again after I get it properly working.

I still have to find the drivers just to get it n my computer to work together.

[upbeat geyser]

The laser cutter saga got interrupted by a house move and some other life events, but I was writing it up on my blog. Here's Part I: https://bodger.dreamwidth.org/14594.html

[plush gorge]

I thankfully, FINALLY got the power system to work. Lol, That's been a bit of fight. Sweet, thanks, I'll go take a look in a few.

O wow, @upbeat geyser ,sounds like you have embarked on quite the project to get that Laser working properly. Have you heard anything back sense you wrote that?

[upbeat geyser]

Part II https://bodger.dreamwidth.org/14990.html

Part III https://bodger.dreamwidth.org/15356.html The little blue triangles at the bottom let you click to the next entry.

[unborn sphinx]

You'll get better results if you keep the work piece short, its more rigid that way and will vibrate less

[plush gorge]

Ya @unborn sphinx , that's one of the first things they recommend you do is securing the lathe to a thick piece of wood with rubber feet for added rigidity and vibration dampening. Still have to do that.

[unborn sphinx]

I mean the aluminum rod

[plush gorge]

Lol, oops. Sry, @upbeat geyser didn't scroll quite far enough to see that. Thanks

[unborn sphinx]

The stickout is about 2.5 the length of the cup, btw nice cup

[plush gorge]

Thanks. 😃 I'm quite proud of my 2 little cups.

[unborn sphinx]

You want the material you're working on to be as short as practical, then if it still needs to be long you can get a tailstock with a live center

For those cups you'd probably want about half an inch, or a centimeter, longer than the cup, so you're not right up against the chuck

You should measure the cup's capacity somehow

If you've got any syringes that should be pretty fine, or by weight

[fiery plank]

My new workbench I made

[unborn sphinx]

that looks like about 150$ if you wanted to become a carpenter

depending on your clientel it could go up to 500$ pretty easy

[signal loom]

@fiery plank looks amazing! My one critique is the nice wood top. I don’t know if you are woodworking, soldering, or just using it as an office desk but I swear by a MDF top. I built some removable ones into my benches and they help keep it looking like new. If you mess up the top, you just swap it out. If you add some good sealing to yours, it should do fine for most electronics work

[unborn sphinx]

it wouldn't be hard to make a top that either rests on or clips on

add a skirt to a sheet of inch or half inch MDF so it won't slide around, gravity will do a lot to keep it in place, but then just bolt tabs of wood around the skirt to clamp on for a super solid fix

if you do this I recommend adding something grippy and pliable like cork or rubber sheet under the MDF, it can just be sat there and doesn't need to cover the whole thing, just enough that when you push anywhere the MDF doesn't bow.

a couple layers of plastidip sprayed in spots across the bottom would probably work great

[fiery plank]

@unborn sphinx the wood itself cost $150

@signal loom I just have one coat of polyurethane on it at the moment. Plan on putting one more on the whole thing and then layer it on the top and shelf

[signal loom]

Great!

[unborn sphinx]

must have been some good wood

[signal loom]

@unborn sphinx even marking 2 layers of MDF and putting the skirt face up on the bottom one. That way you wouldn’t need to make a whole new top. Just drop a board in

[unborn sphinx]

I can't imagine what you mean

[solar yew]

I'm learning how to use the Java YouTube Data API

Hehehehe

[plush gorge]

That's a GREAT looking work bench @fiery plank ! U got skilz brah!

Christmas morning came early for me. 😁 Delivery guy just brought my work bench supplies. Can we build it?? YES WE CAN!!!!

Got the plans worked out.

Though, one of the pieces of the melamine sheet is getting used as a white board by my desk to help me plan the creation of the Open Source Power Chair ( The 'OSPoC' project) . I'll just have to save more & get another sheet to help my melamine topped work bench to grow big & strong. ;-D

[grave shadow]

I maek a thing!

[plush gorge]

DUDE! @grave shadow that's brilliant! #awesomemakertool

[grave shadow]

needs a thumb actuator or something, wip, fun to use though 😄

ty 😄

[plush gorge]

Just as it is pretty sweet & effective. Ur going to add a motor & trigger as well? SWEETNESS!

[grave shadow]

oh, I just mean an extra lever to pull the top end down

[plush gorge]

You should post the STL n do a thingiverse & show it on show & tell, let people know it's out there.

I'm not to that stage of doing that kind of work yet, but when I do. I'm going to want to know how to make one of my own.

[grave shadow]

I went into too much detail I believe

lmao

[upbeat geyser]

This is one of the cases where too much is way better than too little.

[plush gorge]

Lol, no such thing as too much detail. 😉

[grave shadow]

really wanted that knurl ^-^

[plush gorge]

Exactly @upbeat geyser

[grave shadow]

haha 😄

I posted that image twice, one in the opposite direction, discord decided it was expicit

[upbeat geyser]

I have to admit, I quite like that render, just as an appreciation of the art and engineering.

[grave shadow]

https://www.thingiverse.com/thing:3300546

@plush gorge

[plush gorge]

@marsh quest @rustic stag You guys have got to see this awesome maker tool that @grave shadow came up with. Simple yet superbly effective. https://www.thingiverse.com/thing:3300546

[marsh quest]

nice!

[lunar venture]

WHOO HOOOO JUST MADE DISCORD SWEARBOT!!!!

for FIRST robotics

that code is profane but if anyone wants a copy dm me!

[unborn sphinx]

you made profane code for FIRST? this seems like a very odd thing to do

[grave shadow]

@lunar venture what happens if you say things like grapes ?

[lunar venture]

@unborn sphinx the python code has the swears in it to block

@grave shadow welllllllll nothing because it could actually be said in a sentence (not profanely)

[grave shadow]

interesting, could I test it out ?

[lunar venture]

sure, should i dm you the code

[grave shadow]

👍

3.7 ok ? (python)

dunno how it works, just have it to use some stuffs xD

[lunar venture]

3.6

do you have the discord lib installed?

[grave shadow]

negative

[lunar venture]

1mo

[lunar venture]

separately:

https://hackaday.io/project/158514-real-tricorder-with-scanny-bits-tng

[plush gorge]

The new work bench, but...

No project is truly complete, till it meets kitty approval. Lol.

[jagged harbor]

Many ways to plug Micro:Bit into a breadboard but here is one way to do that AND make it mobile...https://www.youtube.com/watch?v=FDGu_ttbt7Y

[unborn sphinx]

custom designed charge controller? nice

[undone pulsar]

Gamegear now working from 3.7v lipo

It was designed by greatscott I just changed the resistors to boost to 7.8v

[undone pulsar]

Only lasted 30mins mind you on such a small lipo :D

[hidden saffron]

I like this idea. I have a few game gears sitting around... They eat AA like crazy

[unborn sphinx]

Sounds like these things could use a small ICE generator

[timber mist]

Addressable LED Thermo-Barometer. Pic with yellow LED's in it is current air pressure, 1014 mbar, corrected to sealevel. Pic with red LED's is current temp 28 deg F. Current reading is white, 5 min avg is green, 5 min avg 1 hr previous is blue, and magenta marks 24 hr high-low range. Still work in progress.

[lunar venture]

Awesome work @undone pulsar

[next thorn]

Built this today, it's my first time using 0805 LEDs. I burnt 4 of them but had extras, and I learned how to solder components that are really small

[cobalt dove]

My Secret Santa Giftee finally got her gift and watched the video I made for her so I can now share it! https://youtu.be/oTSosQ7iYjU

[robust fiber]

@vernal ferry remember that SAMD10 LCD?

Ran into a few issues, first didn't work because of a missing pad, the second works but there were a couple of legacy issues, but it works!

The third version should run without a hitch

[vernal ferry]

@robust fiber awessssome! yes! Do you have the mini tft featherwing??

https://www.adafruit.com/product/3321

[robust fiber]

No why?

[vernal ferry]

ohh it uses a 09

[robust fiber]

@vernal ferry looks pretty awesome though!

Ah crudge

Adafruit beat me to the punch

I didn't know it ran on a 09!

[vernal ferry]

@robust fiber also on the seesaw platform

[robust fiber]

Yep, I have a seesaw

[vernal ferry]

whats the 10 got over the 9? better specs?

or more peripherals?

[robust fiber]

@vernal ferry better specs + a dev board.

[vernal ferry]

@robust fiber keeen they are on 'sale' at digikey so might pick up a few chips to play with! Im planning to use it with a similar display

[jagged harbor]

Trying out SafeYouTube, thinking we might use it for sharing instructional vids. with students in after school program using MakeCode. Please let me know if it does not work as well on your computer as original YouTube:
http://safeYouTube.net/w/149g

OK, I see one big fault right now. I wrote a lengthy description for the original YouTube vid including links to buy products and explanation. That does not transfer over in the SafeYouTube link. Rats !

[unborn sphinx]

what is this?

[robust fiber]

@vernal ferry sale? Sounds like you have a cool project lined up!

[vernal ferry]

@robust fiber yeah there’s 400 qty of atsamd10s going for a buck less. Non cancellable/refundable stock. I want to use displays in project without having to use up the main chip for it

[robust fiber]

@vernal ferry Is that what non-stock means? Thanks for pointing me at em! I particularly like QFNs and Arrow doesn't stock them.

[lapis abyss]

Merry Christmas, that is an M4 express

[vernal ferry]

@robust fiber aye I think so ☺️ I prefer qfn packages too

[upbeat geyser]

Oh, that's neat! The last time I used an M4 to output X/Y analogue signals, I repurposed the "Tone" code to provide a regular update interval.

From the circuit layout and scope picture, it looks like you may be using RC integrators to generate vectors?

[lusty siren]

How I am wrapping Christmas gifts this year. Brown craft paper and a wax seal.

A close up of the seal I used (This was on another gift)

It's thematic, I gave every family their own seal, so I figured I'd seal them with my own.

[vernal ferry]

@lusty siren BEAuuuutiful!

[lusty siren]

I've used WAY too much wax on pretty much all of them

[vernal ferry]

makes an extra secure seal!

[lusty siren]

Also often seals the seal to the seal, which... can make things messy when you try to remove the seal from the seal

[vernal ferry]

i like it, makes the wrapping re-usable 😃

[lapis abyss]

@upbeat geyser I tried to copy the johnengineer circuit. The blog no longer comes up. Looks like he used an Arduino, but the same rc filter circuit.

[upbeat geyser]

Hmm, haven't seen that circuit.

[strong phoenix]

@lusty siren very nice, indeed!

[onyx grove]

😃 👌

[signal loom]

Wow

[median lake]

@lusty siren very nice work!

[leaden frost]

@lusty siren Did you ever try your hand at 3D printing and casting in metal custom seals? My wrapping - it all ends up in the recycling bin anyway.

[lusty siren]

It's thought but I have not done it yet

[leaden frost]

In Tinkercad you can import in a svg and it "extrudes" it for your stamp.

[warped cobalt]

@leaden frost Reminds me of my family

Who tranfsered to bags & clothing boxes for 'reusable'

[leaden frost]

@warped cobalt Everyone is family. You will like whatever is inside because I put some thought into it. You should try this https://www.instructables.com/id/Decoy-Gift-Wrapping/

[warped cobalt]

Bahahahahaha!

I love it!

I may be trying that one

[lusty siren]

@leaden frost That is amazing, I love it

[signal loom]

I’ve done this before. I “Gifted” someone a cinderblock full of jelly beens

[woven relic]

In other news, my lightsaber is coming to life and its soooooooooooooooo close now!!!!!!!!

[trail siren]

i built a Cassette tape RFID Reader boombox with a raspberry pi and GPIO buttons for Pause,vol up/down,prev and next

[slim thicket]

I can safely say, I never expected to see those words in the same sentence in that order. So what does the RFID provide for you?

[unborn sphinx]

NFC tags aren't usually large enough to store music, or fast enough; so they'd let you turn cassettes into physical tokens for digital references

[slim thicket]

Ah, I gotcha. I thought this thing was actually playing the cassettes. That makes a lot more sense.

[grave shadow]

got one of these bad boys today, currently replacing my engine sounds >:D

https://litruv.com/car/

[solar yew]

Made a tiny rgb backlit single key keychain. Was destined to be a 3x3 shortcut, but I broke my pro micro, and the show must go on!

https://www.instructables.com/id/RGB-One-Button-USB-Keyboard/

[random hull]

I made a capacitive touch hoodie for my daughter for christmas 😃 https://vimeo.com/308014235

code for the project is here: https://github.com/chris-schmitz/gemma-jacket

and the case I designed for the jewel is here: https://www.thingiverse.com/thing:3209885

[jagged harbor]

This setup is the basis for an afterschool STEM program. The organizers of it are not flush with money so they provide only Chromebooks for the students. MakerMakeCode is used here. I add LEDs remote from the CPX to give even more action and show how to hook up remote outputs with 'gator clips. I'll get links to code and the MakerMakeCode edit site in the "description " of the YouTube vid. https://www.youtube.com/watch?v=znko02u2PIM

[rich snow]

Had to make one, but I wish Adafruit would stock these. Feather Tripler with mount holes for the small enclosure.
https://oshpark.com/shared_projects/cYVNzFc5

https://644db4de3505c40a0444-327723bce298e3ff5813fb42baeefbaa.ssl.cf1.rackcdn.com/1e16b9fc9b200befb011393ac910fa5d.png

[unborn sphinx]

the standard trippler has 12 mounting holes in that orientation, although a tripper with slot mounting wings for a standard size of extrusion enclosure would be nice

[undone pulsar]

@grave shadow what do you mean by sound? You alter the rpm to make tunes?

[grave shadow]

@undone pulsar so, pretty much playing it louder than the car engine itself

on the car stereo

[undone pulsar]

Oh must be deafening

[unborn sphinx]

A lot of modern sportscars and luxury cars are so efficient (read: quiet) and so well insullated, that the driver cant hear the engine, which caused a decline in sales due to percieved weakness. So a number of manufacturers play false engine noises through the stereo to make the driver feel like the car was worth it. Automotive marketing design is fascinating

Like, CVTs are better than automatic transmissions in almost every way but cost, because they are able to convert the engine RPM to the wheel RPM at peak torque at all points while fixed ratio transmissions are most torquy at the bottom of each gear combination and then they drop off.

But CVTs create a smooth forceful acceleration from 0 to fast, which is percieved as ineffectual by the driver. With fixed ratio transmissions you're frequently applying the clutch, decellerating, and shifting to a combination with way more torque, accellerating roughly then that tapers off. Its all very wasteful but a visceral experience the smooth acceleration of a CVT lacks. Sales declined, so they made CVTs that emulate the torque curve of a fixed ratio transmission. They're factually worse but people feel like they're better

https://cld.pt/dl/download/d14396fd-4148-4312-8830-7e9fa8ebae03/cvt/performances/MT_CVT_Power.gif

[solemn bolt]

Since the old method of checking if a twitch user is live as outlined in the Adafruit Automatic Twitch On-Air Sign guide is being depreciated I made this little project that checks multiple streams using the New Twitch API and Brian Lough's Arduino Twitch api Library.

[trail siren]

@unborn sphinx yes it has rfid stickers that coordinate to music tracks via phoniebox. also has a web app to control music and add rfid cards

[vernal tartan]

https://youtu.be/gpTGXApU5Dw

[strong phoenix]

Anyone need some last-minute, all-natural confetti? 🎊

[leaden frost]

@strong phoenix Confetti? You might want to sharpen that blade and tune up the plane so you get ticker tape.

[strong phoenix]

@leaden frost haha. She'll do ribbons. That was just post-rip cleanup before truing.

[trail siren]

https://soundcloud.com/420sixtynine/mixxx-neotrelliswav/s-VXwvn a qucik rap mix using the neotrellis and MIXXX. the x and y control pitch and gain 😃

if anyone wants the files to the mixxx map just let me know

[topaz edge]

https://cdn.discordapp.com/attachments/320987878459179008/529811770705969152/video.mov

First of many UI windows to come for this project

hueee

Took me 2 hours to figure out the ESP32 SSD1306 library reads .bmp image bytes starting from the most significant byte where as the standard in other libraries is to start from the least significant byte

All the tools that extract hex values from .bmp files follow the latter

I use Roblox studio to write lua code to parse and edit byte arrays, including the fix for the oled .bmp file problem 😂

I write those utilities trashy cause it's not source code anyways

[fallow glen]

Finally got my RGB controllers done so I can do this

[tribal delta]

I finally got around to making/editing a video on my 4-player 1-d pong using the CircuitPlayground express. Thanks to the #circuitpython-dev people who helped me puzzle out some code issues... https://t.co/Lv4yODvdOJ

[woven relic]

I think I ALMOST have my lightsaber done..... I just gotta finish connecting the wires to the connector and upload the code to make sure each part of it works properly. then I'll upload the full code once the individual parts work. oh, and I gotta swap out the leds in the blade with the new ones because I currently have tooooo many leds in the blade and its taking up toooo much power

[ruby ledge]

I wrote a multi-I2C software (bit-bang) library and multi-OLED library to go with it. Now you can get N I2C buses on N+1 GPIO lines (common SCL). Code to be released shortly.

(in photo) Arduino 32u4 (Pro Micro/Leonardo) with 4 displays each set to the same I2C address, yet with unique parameters (display type, flipped, inverted)

[unborn sphinx]

oh that's good

any idea at how much utilization this occupies on the 32u4?

[ruby ledge]

@unborn sphinx utilization?

Transmitting data to each display takes the same amount of time compared to regular I2C, so it's up to you how to manage the displays.

Only one device is active at a time

[unborn sphinx]

cool

[ruby ledge]

I guess if you needed more speed, it would be possible to drive multiple displays in parallel, but that's not the aim

I really just wanted to learn if I could share a clock line between multiple I2C buses and this confirmed that it's possible

Since the start transaction signal requires both SCL and SDA to go low, having SCL toggle on unused devices is just ignored

The only concern would be the combined pullup resistance and capacitance of all the shared wires

Still, you could use 1 clock line for every 2 or 4 devices to reduce the total GPIOs needed

[unborn sphinx]

if it's the same as normal I2C, that's good enough for me

[jagged harbor]

Microsoft Maker MakeCode looks to still be in development for some boards. The Circuit Playground Express is listed as still being in Beta at this time. There is some amazing work being done now by the MakeCode team to enable CPX in Maker so that we can use the board as a controller for I/O s on a breadboad. Here I show a development yesterday from the team enabling button press; this is very different from CPX coded with MakeCode; Maker will be useful for "little labs" like this elementary one shown: https://youtu.be/PGk92jwgAzc

[jagged harbor]

MakeCode music translated into MakerMakeCode for CPX taken from here: https://makecode.adafruit.com/courses/maker/projects/music-maker, This is to show that CPX can be programmed for music using Maker MakeCode by changing an "input on A1" to "input OnGesture" which the code does not object to. We now can program LEDs off CPX on a bread board to light with the music. MakerMakeCode is developing. (you may have to click 'edit' to see the animation): https://makecode.com/_WXUMdWJjeYFv

[solar yew]

so weird,
i was running adb to a mobile device,
the needed to flash a Arduino flashing started but got stuck

afterward the arduino could not be recognized

so after 20 mins of trying to get it to work i gave up

this morning after a reboot... it works again.

🤔

[solar yew]

and now the symptoms returns

[vernal tartan]

https://www.youtube.com/watch?v=iUNTJXLp-Z8 I need a camera stand or a steadier hand. This is a 24 hour clock with 180 degrees of motion. It firsts tests the motion. Then the time it sent forward an hour at a time using a button. Circuit Playground/Circuitpython/servo

[unborn sphinx]

is that the most wonderful of creative materials, a straw?

[vernal tartan]

hahah yes 😃 .. warning: not for use in California

[round terrace]

I made a CircuitPython based ring clock to decorate my already busy desk at work and also to test a short library I wrote to use a DS1302 RTC. The outer ring shows the hours (in 24 hour time) and the inner ring shows minutes (in increments of 5 minutes). Quite happy about it!

[merry plinth]

Looks nice

Maybe you try to arange the circles next time

[round terrace]

Good point. The inner circle is actually meant to be offset towards the top, but the picture made me notice that it's also slightly offset to the right (which was not intended)

[unborn sphinx]

assuming you made this by hand, a trick you can use is to do your layout on something else and then transfer it, for example draw the positioning on a sheet of paper , once you have the hole centers lay the paper over the cardboard and use something pointy like an awl or a pen you don't care about, maybe a nail, to poke through

[round terrace]

Oh! I actually didn't think of that. I ended up tracing the rings directly inside the cardboard box to know where to remove the layers of cardboard prior to fixing the rings in place. I may have been a bit too excited at the prospect of getting the clock working that I didn't stop and analyze the physical layout enough... 🙄

[upbeat geyser]

I know that feeling!

[unborn sphinx]

great feature of transferring, if you're careful the layout can be used several times

[unborn sphinx]

bonus trick, you can just print it, sketch this up in some CAD software and get it to print as big as you want

[ruby ledge]

I just released an Arduino library which allows you to control multiple I2C OLED displays simultaneously using my Multi_BitBang library:
https://github.com/bitbank2/Multi_OLED

[signal loom]

Some ID plaques for our teams robot. We have a tournament this weekend and need plaques with our ID number on them.

Going to be edge lit

[lunar venture]

Working m4 in less than in inch square ready for tindie ( when parts or comes in )

Sans power supply

Casteled pads for easy integration

[vernal ferry]

Nice! @lunar venture

[jagged harbor]

Afterschool electronics/coding : Maker MakeCode, CPX ,Chromebooks and bread boarding: This is a link to a Google Drive text document with links to the first 4 lessons using Chromebooks, Maker MakeCode, Adafruit Playground Express and breadboard with inputs and outputs. Lessons include activating the onboard and off-board RGB LEDs and single LED and a momentary switch button. The tutorials we have found elsewhere up to this point do not include CPX driving components on breadboards in Maker MakeCode. Nor coding with Chromebooks. https://drive.google.com/open?id=19-Lr1MXqRQE0ikljkle8Z49JBfW9w0znT-qsT-wdU8I

[cedar dew]

My current project is a nanoarcreactor. I’ve printed this as one piece in translucent PLA+

Using adhesive foil tape for the metalic finish

[rain wyvern]

A recent project of mine was a Nixie clock using some Nixie tubes I'd found in a discarded piece of lab equipment I found at the town dump with my dad probably close to 20 years ago. I started the clock maybe 15 years ago but only finished it with the aid of "exixe" driver boards from a maker on Tindie, an Adafruit trinket, and about 350 hand-soldered connections! 😱

[unborn sphinx]

very very nice

just to throw it out there, brass sheet is usually pretty easy to comeby, cheap, and simple to work with, it then it's also easy to artificially age, if you wanted to build a cool housing

[rain wyvern]

Thanks! Yeah, I was trying to figure out a good housing. I was thinking clear acrylic to show off the coolness inside, but maybe some combo of brass and acrylic. It would be nice to ensure the high voltage bits are covered.

[unborn sphinx]

what would be cool but much harder, have a wood box with brass edging and the top of the box is a sliding dovetail so you can take it off and under that is an acrylic window

[rain wyvern]

Ooh, that would be cool, but beyond my skills. 😦

Though maybe I could do something like a brass frame for the edges with acrylic panels for the faces. The brass could be bent and soldered pretty easily.

[ruby ledge]

https://bitbanksoftware.blogspot.com/2019/01/controlling-lots-of-oled-displays-with.html

[solar yew]

nice

[ruby ledge]

https://github.com/bitbank2/FastIO

new library today 😃

[snow ridge]

Automated aquaponics system

Almost done

[vernal ferry]

Today I had a final exam on layout design class and used CircuitPython as my source material 😄

these spreads are designed for a fairly tall magazine format

[lunar venture]

@vernal ferry nice

[jagged harbor]

please post a link when you wish of your final Automated aquaponics system; much interest.

[ruby ledge]

https://twitter.com/fast_code_r_us/status/1084178732460445697

Mr. Optimization (@fast_code_r_us)

Updated my library to support line+pixel drawing for MCUs with enough RAM (anything other than AVR). In this video, I'm demoing it on my shiny new @adafruit #nRF52840 feather. https://t.co/7gwxeni0ry

Twitter

Updated my Multi_OLED library to support multiple back buffers for pixel and line drawing

[ruby ledge]

The line drawing code is somewhat unique and tries to minimize the number of bytes sent over I2C by grouping horizontal and vertical changes into as few bytes as possible.

[jagged harbor]

Barbie's first car: Education for kids with Maker Make Code and Adafruit Trinket M0: video:

https://youtu.be/FMlV0yOTWB8

[cedar dew]

For this nanoarcreactor, I added 2 sets of neopixels one white and the other blue/pink around the edge to mix the effect. The video doesn’t show it that well but it’s coming out nicely

[indigo charm]

Achievement Unlocked! Soldering.

[cedar dew]

If Thanos attacks, I have insurance

[strong phoenix]

@indigo charm awesome!!!!

[indigo charm]

😃 school science project. Making her do all the soldering.

[leaden frost]

@indigo charm That's great getting the kid to solder. I would recommend going to the home center to get a pair of safety glasses - (plastic eye protectors that fit over glasses, not those lab goggles - a little harder to find though, none of the others fit over regular glasses) They help to keep from runing an expensive pair of glasses from solder splatter and can be used when she starts working with other tools. I use mine all the time, its like a pair of clear glasses over my regular glasses. All those free pairs of eye protectors I got at Maker Faire do not fit over regular glasses.

[indigo charm]

Gah @leaden frost that is an excellent point! We have some already that fit her and I completely forgot! Thanks!

[warped cobalt]

Like, some cool parent awards should be going out; for creating the next generation of super makers!

[jagged harbor]

Barbie gets a ring ! One single neopixel, Adafruit CPX, Maker MakeCode and Barbie mannequin. Part of an educational project to encourage girls to code and do electronics. Code included in video description: https://youtu.be/3G-J27Xr-08

[signal loom]

@indigo charm to add into what @leaden frost said, clip-on side shields are invaluable for glasses wearing makers. Although it will not protect her glasses from solder splatter, they are great f you are working on woodworking or metalworking projects for an extended period of time.

[solar yew]

finally made something worth posting about

it's basically paint for eeproms

[ruby ledge]

@solar yew can you post a link with more info about what it does? Have you shared the code?

[solar yew]

need to sort out some finer detailed stuff 1st,
then will drop the source for the Arduino and application.

[topaz edge]

https://twitter.com/lm_loleris/status/1085493268148817921?s=21

loleris (@LM_loleris)

I created a fancy remote control with an arduino. I’ve yet to finish the source, but the remote itself is just so cute :P https://t.co/pss3HgAc8f

▶ Play video

Twitter

https://youtu.be/wLaUgF73o8w

[valid path]

This isn't an electronics project per se but it was a quick fix to help me corral my wire spools on my limited bench space:
https://cdn.discordapp.com/attachments/327254708534116352/535041268506689536/image0.jpg

Less than $10 of parts and 10 minutes to assemble (it took me longer to rewind my spools)...

[leaden frost]

@topaz edge Nice! A James Bond car remote controller? Is that the IR led blinking or just a regular blue led?

[topaz edge]

@leaden frost WS2812b addressable diodes, they’re so dead simple to setup 😛

Cheap, bright as the sun

[leaden frost]

we call them Neopixels.

[topaz edge]

That’s specifically the Adafruit line though

based on ws2812b’s

idk if its identical or not

[leaden frost]

I use the adafruit neopixel library, FastLED but really use Circuitpython more nowadays.

[topaz edge]

Does it support C libraries

[leaden frost]

That's beyond me, but neopixels are also sk6812 and then there are the Dotstars AP102? which are more for other controllers like rasp pi more compatible with hardware and where you are more likely to use C directly.

[topaz edge]

@leaden frost There are simply tons of different modules you might want to use in functional arduino projects and all of their libraries are primarily written in C. I bet Circuitpython solves this issue in one way or another though

those rgb diodes are really the stuff though 😩

[leaden frost]

Neopixels are great to add to any project.

[jagged harbor]

Barbie gets and bracelet and total bling. This is about the end of the neopixel fashion for the Barbie mannequin. Next will be music. Her earrings are small speakers to play songs. All with Maker MakeCode and Adafruit Circuit Playground Express: https://youtu.be/8UKA-m4WOvA

[visual sinew]

FInished product

https://github.com/omgitstwan/RGB-Lamp

App made in AI2

We made a RGB-led controllable trough your phone

We 3D printed the mushroom

for a school project

[leaden frost]

@visual sinew That's neat! What kind of arduino do you have in the log? Did you have to carve out a lot of space for it?

[visual sinew]

I am using a Nano

It's a fundiono, because its cheaper

And yes, I carved out the wood

This is what the Arduino part looks like

Top left is a bluetooth receiver and top right a power led controller

We used a 3 watt power led

[leaden frost]

High power LEDs can still get warm and even hot. Be careful with it enclosed in the plastic mushroom cap, maybe put a hole in there to vent it.

[visual sinew]

Yes

Thats why we used a cooling plate

We later on changed it to a thin piece

Because this was too much

[upbeat geyser]

Nifty! I had a bad habit of staying with "too much". I'll sometimes do completely unnecessary things like put LEDs on a Peltier effect cooler and add a thermistor to monitor temperature and use the microcontroller running the LEDs to also control the cooler (and a fan) with PWM. There are times which this sort of thing is appropriate, but I'm usually doing it for fun.

[visual sinew]

Ah

It was our first ever arduino project

3d printing project

we had 0 experience

[upbeat geyser]

Well done! Huzzah!

[warped cobalt]

@visual sinew Psychodelic!

[visual sinew]

Dont know what that means @warped cobalt 😂

[warped cobalt]

Very groovy

[craggy parrot]

@visual sinew Very nice! Congratulations!

[visual sinew]

Thanks

[topaz edge]

https://www.youtube.com/watch?v=rzaRF2A00Ag

Analog joysticks -> Arduino pro micro -> nrf24l01+ ->nrf24l01+ -> Arduino pro micro -> ESP32

😂

Wanted to have less load on the ESP32 and also have the SPI connection free for the SD card reader

The arduino only sends data when something changes

[upbeat geyser]

Reminds me of the time I had my phone acting as a WiFi access point, so it was getting data via GSM and handing it off via WiFi, and another phone was getting the data from the WiFi and handing it off to a laptop via Bluetooth. 3 wireless protocols at once.

[vernal ferry]

@topaz edge cool project!

[topaz edge]

https://cdn.discordapp.com/attachments/331923540746174476/536008401482678296/video.mov

Too much coding at this point lol

the choppy tone is just a quick proof of concept

ESP32 is more than capable to make it smooth

[jagged harbor]

https://youtu.be/Xw1hQdeC9zE

Kind of a cool neopixel play function using Maker MakeCode and Adafruit Trinket M0 with 2 neopixel outputs. I took the code by John Park and @sinful nebula and adapted it to Maker for Trinket M0 with mobile 5 volt power platform so it is wearable with Velcro.

@terse totem

[jagged harbor]

MakeCode Arcade: Sprite attacks TACO: https://makecode.com/_4JJCpURsYifK

[meager raptor]

Has anyone connected a Geiger counter to an Arduino or Raspberry pi?

[upbeat geyser]

That's basically how the "DIY Geiger Counter" works, but instead of a whole Arduino, it uses the ATmega328 chip. https://www.dropbox.com/s/yfpn2y8yv2e2b9k/GK-B5.6_Sch.png?dl=raw

[solar yew]

My tft featherwing/feather m4 express based scuba computer. It's been taking me to 60m (200ft) and bringing me home without problems for the last month

Inside view:

[leaden frost]

@solar yew That's pretty cool. What kind of sensors are on there? I guess this would be prototype size that can be made into a wrist wearable with haptic feedback.

[solar yew]

@leaden frost the pressure sensor (The big red thing) is an ms5837-30ba originally intended for an ROV. It does pressure and temperature, communicating directly via I2C.

It's certainly the biggest dive computer I've ever seen, but it also has the biggest screen. If I used the 2.4" featherwing it would be pretty much "normal" sized.

[leaden frost]

@solar yew big screen is better in murky waters. It's accurate or better than other instrumentation?

[solar yew]

@leaden frost ideally I'd use a 2.8" screen. I was thinking about trying to plug one onto the 2.4" featherwing just to see if it works :)

In terms of raw functionality it's about the same as a shearwater or OSTC (those are in the $1000 range) but with a much richer user interface (IHMO) including a couple of unique features. I've still got to add rebreather support, which might take a little while..

[leaden frost]

@solar yew Great. I think you should get a couple of underwater pics using your device and submit it to the Adafruit blog, lots of people would be interested.

[jagged harbor]

Educational moisture sensor for kids' club project: first steps. Will convert the JS code written in MakeCode to Maker MakeCode so we can go from Micro:Bit to Adafruit CPX. (Thanks Stephen at Core Elect. for the Micro:Bit project examples):https://www.reddit.com/r/MakeCode/comments/ahpbed/moisture_sensor_makecode_for_boys_and_girls_club/

[upbeat geyser]

Personally, I think Python is a better choice than JS for kids' programming. We did a workshop about a year back using Mu and Micro:Bit, it worked pretty well.

[vernal tartan]

There just isn't the Scratch-like interface for python that works like Makecode does. I like how they can flip back and forth been the puzzle pieces and the text based coding of JS. It sets them up to do text based python coding later.

[jagged harbor]

For those restricted to Chromebooks (us) here's a link to Python extension in Chrome and this would be a whole new environment for us: https://chrome.google.com/webstore/detail/python-shell/gdiimmpmdoofmahingpgabiikimjgcia?hl=en

And we'd like to get 100 % of our kids, 8 yr old and up, to do at least a little coding (blocky type) and then see it in text on the same screen .

[lapis jasper]

@vernal tartan have you seen edublocks? https://edublocks.org/

[neon nexus]

I built this little cyberpunk laptop last year. It was fun! https://imgur.com/gallery/1vLNfE3

[solar yew]

A side-by-side comparison with a $1000 machine yesterday at 40m. We ended up with 35 minutes of decompression stops and my home-build didn't miss a beat.

[signal loom]

@solar yew dive computers? Who makes the pro one? I am a hobbyist scuba diver so I am always curious.

[solar yew]

@signal loom Thé computer on the left is a shearwater CCR controller

[valid path]

@solar yew Whoa! That's cool! How hard is it to waterproof your home-build?

[solar yew]

There are basically two kinds of waterproof housing. The first is "ambient pressure" which basically means that the whole thing is waterproofed but endures the water pressure (about 100 pounds per square inch for the dives I do). This means that if there are any air gaps, anywhere, the device will be crushed. The second type of housing "atmospheric pressure" (the kind I used) not only waterproofs but pressure proofs - the housing has to resist the 100 psi without crushing or flexing. To be strong enough, the housing is a qurter-inch thick delrin and the window the same thickness of lexan.

[valid path]

wow

[leaden frost]

@solar yew Thanks for that tidbit on pressure rating. Now I know my cheapo watch "rated for a couple of atmospheres" will not only get wet but will implode if I wear it in the swimming pool.

[solar yew]

@leaden frost watch ratings are strange things : a 100ft/3atm watch can't even be taken in the shower, you can go swimming with a 300ft/10atm watch but you need a 600ft/20atm watch to go diving.

[coral gull]

Had an issue with the PWR_ON LED on my Pi3 v1.2, turns out Q1 was missing (probably knocked it off during test fitting for some old project). Resolved it with a jumper between the source and drain pads on the PCB.

[lusty siren]

If it was loose enough to be knocked off without causing other damage, then it was loose to begin with. Good fix though.

[vernal tartan]

@lapis jasper that edublocks looks neat, I see there's been an annocment while I was out. Sorry for the delay, I tend to slip into hibernate mode at temperatures below -10C

[lapis jasper]

no worries @vernal tartan I would too 😃

[lusty siren]

That's about the temperature here today. Cold!

[jagged harbor]

Starting to show and tell MakeCode Arcade video on YouTube with Tristen Sparks: https://youtu.be/4oChu6W8q3E

[lapis patrol]

Lights Out game in Python for the NeoTrellis M4 Express https://github.com/rarrmonkey/Lights-Out my first public share

[jagged harbor]

Show and Tell: video how to upload an Arcade game; MakeCode (JavaScript) to a console: https://www.youtube.com/watch?v=x_ZKGYXrL3M&t=3s

[lunar venture]

Aaaaaaaaaaaah

[tender palm]

My Carbon fiber Raspberry Pi case! Not for losers! https://www.macsboost.com/2019/01/24/mcpi-carbon-fiber-aluminum-racing-raspberry-pi-case/?preview=true&_thumbnail_id=211

[jagged harbor]

New project, educational, using Microsoft MakeCode and LED's. Thanks @terse totem for the music. This may have more appeal to boys than the previous Barbie mannequin and LED project on this same MakeCode and Hardware YT video channel. This should run to several episodes including the speaker/siren on the Jeep hood and a proximity sensor to alert the dinosaur hunter of the animal's approach: https://youtu.be/9OIz2rvAmcE

See YT channel and video there for links to code and music.

[terse totem]

Nice, I wish my Jeep had a light bar like that!

[merry plinth]

If your wife sais you just have a mind for arduino.

I swear this is steampunk 😄

[upbeat geyser]

Homemade "Divergence Meter" from the Stein's Gate manga and anime

[jagged harbor]

@terse totem , light bar is in Proton, flash light will be tomorrow. This (Proton function) is a protective laser system to shield dinosaur hunter ;acts as a stungun so needs to be installed on Jeep headlights, taillights, trailer lights. Dinosaur hunter will stun the animal and then hunter can extract DNA from synovial fluid in the dinosaur minor synovials for replication in the event that this last animal on earth dies. That's the plan: (best laid plans of mice and men....and all that) stay tuned. (ps, we need more melodramatic music) .

[jagged harbor]

Educational Microsoft MakeCode: changing Trinket M0 from 170 tie hole to 400 tie hole instructions for students plus Neopixel code in Maker MakeCode with music by John Park, video: https://www.youtube.com/watch?v=3Hj-Mrg9r6c

[vernal tartan]

https://trinket.io/python/bf67b0b6ac

Adafruit Logo via Python Turtle

[lunar venture]

All in cp running inside of gui

[jagged harbor]

New project for Maddie and her LED lightshow pendant. With extended wires she can add I/O sensors and speakers to the breadboard; coded in Maker MakeCode/JavaScript. Photon function with 'light' in the MakeCode toolbox. Music by @terse totem , https://www.youtube.com/channel/UCYvU-GOQCX97aDu3o4bxl_Q

[coral gull]

RasPi3 died, won't recognize SD cards for booting. Tried reflowing the SD card slot pins in case one wasn't getting contact, not much improvement. Now it just flashes the ACT LED as if there was files missing from the SD. Same SD card works fine on RasPi2. Guess I should get a new board

[coral gull]

On the bright side, I got a handful of 18650 cells at work today from the electronics bin, and I'm recycling them

[jagged harbor]

We had a good session with MakeCode and Adafruit boards at local library this morning: here's a video of using Maker MakeCode and Adafruit Trinket M0 with button press lesson and musical tones plus LED: https://youtu.be/22j1MAMkjEA

[manic charm]

Working on a command and control center using the SmartiPi Touchscreen with the Crickit on the back.

Here's a side shot of th SmartiPi Touchscreen Crickit command and control center.

and the front....

[lunar venture]

Basis for gui v2 (well 1 kinda, third rewrite ) completed in two days

The rectangle is a object in a page in a window

Movable, re-colorable, etc

[onyx glade]

MakeCode educational: Using "Range" function on 16 Neopixel square of LEDs: video. Adafruit Trinket M0 used so MakeCode Maker is needed for the block coding; JavaScript is also shown running in the background on another tab. The code link in description takes the student to the MakeCode web page to view program on simulator/ computer screen: https://www.youtube.com/watch?v=2GtzJuCnPi0&feature=youtu.be .

[onyx glade]

Police siren and flashing red lightbulb: Kids; educational MakeCode . This will be the code to program the dinosaur hunter jeep siren and flashing red light. Video, stay tuned: https://youtu.be/IPoAQzuz4Ns

[proud ether]

I made some Energon Cubes: Trinket-powered magnetic color bocks!

[marble mulch]

This is my electronic/art project. Using a "Visible Man" model someone gave me i put a bunch of NeoPixel strips in it (totalling over 180 LEDs), gave it a voice using a MusicMaker shield, and added a shiny red button to press. Runs off of an Arduino Mega i had laying around. It's called ZENTAR and predicts the future! 😀 #sparky

https://vimeo.com/314147166 #sparky

Zentar's "insides."

[upbeat geyser]

I was expecting the LEDs to just be stuffed in there, but they're arranged so they can flow in patterns, that's neat. Can't help being reminded of the Trek episode "Lights of Zetar", however.

[marble mulch]

LOL I forgot about that! His name came to me more as props to Zoltar prestidigitator from "Big."

[upbeat geyser]

That makes sense too.

[west zinc]

Can’t wait to see how this 7 segment mechanical display evolves. It evokes so many new ideas!
https://hackaday.io/project/163473-peters-7-seg-all-mechanical-display-prototype-2

[upbeat geyser]

I remember a friend of mine had a digital clock that used a mechanical display. It wasn't very loud, but I could just hear it updating, which seemed so odd I wasn't sure I'd heard it.

[onyx glade]

Using Adafruit CPX with servo motor and LED light show , educational with MakeCode Maker: (music by John Park) https://youtu.be/EKoq9KP6SUI

[west dune]

https://www.youtube.com/watch?v=R-8KaH3Uyrw

[onyx glade]

Making Trinket M0 perform output of LED ring like Circuit Playground Express with one button press and light show: Educational for students learning JavaScript/block coding and basic electronics. using MakeCode Maker: https://youtu.be/W0If9sBy3Pg

Thanks @terse totem for your "Photon" YouTube video: MakeCode Minute.

[ruby ledge]

How I spent part of my Saturday...optimizing Philip Burgess' "Sand Box" demo for an I2C SSD1306 on the Adafruit nRF52832 Feather

https://www.youtube.com/watch?v=5eHXXkM76fc

[ruby ledge]

Version 2 (removed floating point math) is even faster
https://youtu.be/PIf1v0YDyrk

@hot ivy would you like me to write a blog post about it (giving full credit to your original code)?

[ruby ledge]

Shared the code here: https://github.com/bitbank2/Animated_Sand

[grave bone]

geekyjacket: A hackathon project a friend and I made over the weekend at DevCamp, using Feather M0 Bluefruit, and the lovely Adafruit Mini Skinny Neopixel strip (adafru.it/2969). What's new here is that it's controlled by an app in Flutter, Google's new cross-platform mobile dev platform. This meant bringing up an interesting new dev toolchain, and playing around in the Dart language. And I'm using one of Google's preferred IDEs, Microsoft's VS Code (!), targeting Apple iOS. Welcome to 2019.
https://twitter.com/erico/status/1092261259544674304

Eric Oesterle (@erico)

Proud to win #devcamp’s “coolest hack”! @neil_c_heather & I demo #geekyjacket our @flutterio-controlled, blingy wearable.

Flutter controls an @adafruit Feather M0 MCU via Bluetooth LE. NeoPixel LEDs gently diffused w black chiffon (@JoAnn_Stores!)

Thx @dom & @iPhon...

▶ Play video

Twitter

[bright rampart]

I just created this for a contest on instructables.com 😄 https://www.instructables.com/id/Cardboard-Programmable-Keypad/ pretty much my first soldering project besides some practice beforehand

[molten oar]

@bright rampart effective and simple. Nice!

[bright rampart]

Thanks!

[molten oar]

I mentor in Stanford's EE makerspace (https://lab64.stanford.edu/), and built a board that is easy to pick up (b/c of circuitpython) but has enough features/depth to "grow" with students as they take more embedded classes.

• it has a SAMD51 running circuitpython and an ESP32 running micropython
• all the design files, firmware, and tutorials can be found on the github so you can make your own!(https://github.com/maholli/SAM32)

[grave bone]

@molten oar USB micro B, Lipo, assymetrical pin layout – OMG is that Feather-compatible?!
[zooms in]
Le sigh. So close.

[molten oar]

@grave bone i wanted more IO! 😃

[upbeat geyser]

There is additional I/O on the connector sticking out

It looks like the antenna partially blocks the mounting holes?

[grave bone]

That's cool. Maybe for a future rev though? Could help with conveniently adding tons of already tested FeatherWings. And expand your market, if that's interesting at all.

[molten oar]

@upbeat geyser For traditional mounting holes, yes. But those two are intended to be used with pegs.

[upbeat geyser]

Ah, understood.

[molten oar]

good point oesterle! I'll look into what it would take to conform 😃

[grave bone]

Teensy 3.2's back side might be an interesting approach for adding GPIOs.

You're so, so close!

https://learn.adafruit.com/adafruit-feather/feather-specification

[upbeat geyser]

The backside trick would be tough on this one, as there are components on both sides taking up most of the room.

I'm trying to figure out how the two CPUs communicate. I see TDI/TCK/TMS (to program the flash?), SCL/SDA (I2C), and MOSI/MISO (SPI).

[grave bone]

Maybe substitute small, fixed QSPI flash for the SD card.

Anyway, amazing accomplishment, @molten oar. I certainly couldn't do that.

[upbeat geyser]

That is an amazing little board with a lot of functionality.

[molten oar]

thank you @upbeat geyser and @grave bone!

Considered the QSPI but found students really gravitate to the SD card functionality. Allows a lot of fun data logging opportunities as well.

The two micros talk to each other via UART (TxRx). This allows you to use the terminal to start a REPL with either one (built firmware that lets the SAMD act as a uart bridge).

Although today I learned ladyada built an SPI interface for the ESP32 that allows you to use SPI to perform ESP-related internet tasks: https://github.com/ladyada/Adafruit_CircuitPython_ESP32SPI

[cedar dew]

Showing off a set of custom tuned wind chimes I made with a 3D printed mount finished with a bronze coating and various patinas.

[lunar venture]

thank you for the likes @lapis jasper @eternal maple

[eternal maple]

🙂

[next barn]

Just a really fun first time looking /really close/

[rotund pawn]

@next barn that's beautiful, what part is it?

[wintry pumice]

Here is a CO2 detector prototype I made for my FLL team project using a CircuitPlayground Express:

Code: https://github.com/rodoggyro/circuit-playground-co2-detector

[solar yew]

@obtuse walrus

https://www.youtube.com/watch?v=XXLLuF4JN8g&feature=youtu.be

[solar yew]

I added a compass to my dive computer, glued to the back of the screen with a neoprene pad as a bit of a shock absorber.

[solar yew]

If adafruit are reading this and are looking for product ideas, it sure would be nice if the feather were mounted at ninety degrees like on the 2.4" tft wing. That would leave so much more room for peripherals. Oh, and make the LiPo charger a bit more beefy. And a way to completely power down the tft card.

[next barn]

@rotund pawn thank you! It's a lux calculator

I guess really they'd call it a light sensor

[rotund pawn]

Oh its functional, I assumed it was to show off the inside

[next barn]

LED!

[errant elk]

https://www.youtube.com/watch?v=Y44Erle0U6M

Now it's even more fun with LEDs

[molten hull]

Hi, I was hoping to join the show and tell this week. What's the current protocol? Do I still comment on Google+ or does it route through here now?

[lapis jasper]

@molten hull we'll post the link in #live-broadcast-chat right before the show

ping me if we forget

[molten hull]

Gotcha, thanks!

[rough dew]

Raspberry pi-controlled laser projector!!

Took a bit of signal debugging 😃

[upbeat geyser]

Are those constant-current integrators?

[rough dew]

Somewhat x3

The DACs put out 0-5 V

First op-amp translates it to -5 -> +5

Second op amp inverts it

Both sets of op amps have a couple 10nf capacitors to try & filter out noise

Left side of the breadboard is just a mini power supply

15V in, stable 5V out

[upbeat geyser]

Ah, I saw the capacitors there and it reminded me of a project where I used op-amps as vector generators by configuring them as constant current integrators. Then I just need to send the start and end points of the lines to the DACs and the integrators sweep the lines smoothly at a constant rate.

[ocean gull]

I made a Midi Keypad Electric guitar using an Arduino Micro
https://twitter.com/m4dnerd/status/1094250707614687232

--> English Tutorial : https://create.arduino.cc/projecthub/labsud/midi-keypad-c68fd2
--> French Tutorial : https://wikifab.org/wiki/Pavé_Numérique_MIDI

Rémi Sarrailh (@m4dnerd)

Playing #Raamstein with a USB midi Keypad made with an @arduino micro.
Setup for the virtual guitar:

• Reason
• Native Instrument V-Metal
• Guitar Rig https://t.co/LxaXyeNu6S

Likes

254

▶ Play video

Twitter

[ocean gull]

https://twitter.com/m4dnerd/status/1096077342181650434

Rémi Sarrailh (@m4dnerd)

I made a guide to use a @arduino MKR1010 to send message on discord https://t.co/qkr3LHx5kD

Obviously this can also works on @esp32, i'll post my code later 😁

Twitter

[dark flax]

wow the webhook is named Captain Hook

[compact furnace]

https://twitter.com/crait/status/1096670359804366848?s=19

Jonathan Holmes 🐔 (@crait)

Oh, of course, I need to upload a video of it veing played. 😅 https://t.co/dZ3pd4k2fd

▶ Play video

Twitter

I finished the mod to play my tiny arcade game with a bigger controller!!

😍

[tawdry quartz]

https://streamable.com/l1utu Strobo + motor

[solar yew]

ASM ide for AVR

https://hackaday.com/2019/02/17/a-lightweight-avr-ide/

[errant elk]

https://www.youtube.com/watch?v=Fwios68Po5o

[signal loom]

Now that the season is over I can finally show off our teams FIRST Tech Challenge robot

[proud ether]

WIP: The Quadricon!

[molten oar]

@upbeat geyser @grave bone just following up that I took your comments to heart and tweaked my M4/ESP32 board to meet the feather standard 😃 https://github.com/maholli/SAM32

[upbeat geyser]

Nice. Normally the I2C pull-ups live on the peripheral board, but they can be on the CPU board. If there's room for some solder jumpers, it would make it easy to disable them if unneeded.

[eternal maple]

If you're using CircuitPython, there's a non-destructive way to see if something is connected to I2C. Here's what I've been using to test for an OLED module: ```python
import board
import time
import busio as io
import digitalio
import adafruit_ssd1306

### DEFINE AND INITIALIZE PINS AND DEVICES

set up and initialize oled display

try:
i2c = io.I2C(board.SCL, board.SDA)
reset_oled = digitalio.DigitalInOut(board.D9)
oled_connected = True
except:
oled_connected = False # if no i2C connect

if oled_connected:
screen_pause = 0.2
oled = adafruit_ssd1306.SSD1306_I2C(128, 32, i2c, reset=reset_oled)
oled.fill(0)
oled.text("STARTUP...", 0, 0)
oled.show()
time.sleep(screen_pause)

[upbeat geyser]

I've just been using i2c.scan() although I have to wrap that in try_lock() and unlock()

[eternal maple]

Yours is more elegant and could provide some selective detail. My method is a brute-force beginner's approach. 😉

[woven relic]

Today I learned you could blend 2 animations in FastLED....

[woven relic]

Its done!!!! Though I may go back at some point and redo the front barrel to have leds too

This is my fan gun. It was originally made in the fall of 2017. Its been a hit at every event I take it to and at the last event i had this stupid idea to take one of those dumb yelling chicken toys in the barrel and make it yell. it worked but would fall out kinda easily. So i made a new barrel and a proper adapter. the head is completely removable

[woven relic]

Its my Tactical Assault Chicken

[modest ice]

Hello My daughter Josie would like to join Show and Tell tonight. She has two CPX projects but we aren't sure how to join. Thank you for the help.

[junior agate]

@modest ice Heya - the link will be posted in #live-broadcast-chat at the time of the show later, keep an eye on that channel

[keen vortex]

GPS Logger: It records GPS coordinates (among other geographic stuff) to a CSV file in an SD Card, showing basic info on the OLED featherwing. Smart enough to only save new coordinates if the device changes positions. All done in CircuitPython with Adafruit and Particle hardware.

Big thanks to @craggy parrot for his help troubleshooting some hardware and software issues.

I'll post code and 3D print design on my blog in some days.

[upbeat geyser]

Cool! Does it save periodically (like every X seconds)? Does it do corner pegging?

[lunar venture]

Significantly improved refresh rate for the any 2d array sensor in version 2 gui. All online under the MIT license

[ocean gull]

https://twitter.com/m4dnerd/status/1099297319088992256

Rémi Sarrailh (@m4dnerd)

Make your #pixelart looks delightfully #retro using an #OLED display. We'll see how to make your own image, and animate it.
https://t.co/a3VgPK7RVy

Tested on @arduino micro, @esp32, @esp8266, #m5stick

🇫🇷 on @wiki_fab will be available later!

@xxPixelArt @M5Stack

Twitter

[torn viper]

Thanks for featuring my Rust on Metro M4 project on the blog, totally unexpected. https://blog.adafruit.com/2019/02/26/rust-on-the-microchip-samd51-on-the-adafruit-metro-m4-express-board-rust-rustlang-adafruit-rustlang-rustembedded-bascule-microchipmakes/

[ruby ledge]

https://github.com/bitbank2/I2C_Detector

[wise lance]

My son @wintry pumice wants to show his CO2 detector Lego League project tonight if at all possible. Do we just wait for the hangout link in the #live-broadcast-chat channel or is there some list that we need to be on?

[scenic siren]

@wise lance Hang out in the #live-broadcast-chat and the link will be posted. 😃

[proud ether]

Energon Cubes powered by NeoPixels and TrinketM0 in action.

@upbeat geyser

[upbeat geyser]

Those are really shaping up nice!

[proud ether]

Thanks! I’m hoping I can show them off during the live show & tell next week

Here’s what they look like from the back. I’m I love with these buttons

[upbeat geyser]

I like the heavy duty industrial look.

[proud ether]

Thanks! The panel mount buttons are more forgiving to my less-than-expert dremel skills

Plus they are shiny

They’re a bit pricy at scale- $10 for 5, but I love the way they look and feel

They also have Phillips screw connect for wiring so that’s nice too

Allows me to disassemble these babies

This is what they are under the hood

[upbeat geyser]

Oh, I like how things are put together so that things can be disassembled and serviced.

[proud ether]

I don’t like to make anything I can’t take apart

Also, I’ve been known to connect the wrong wires:)

That said I think I’m going to solder the wires on the next one

[upbeat geyser]

As have I: allowing for that possibility has saved me a fair amount of time and trouble.

[proud ether]

But I could never solder my Trinket

It’s practical too. I use the hard disk to save the colors so you can power down

But I’ve had a disk fault a few times due to write actions and losing power

But it’s super easy to reformat and reload

One trick I’m using that i had never considered is resistors between each button to step down voltage and then going to 1 analog pin

That allows me 4 buttons on 1 pin which I had a mini-panic about when I realized I was short on digital pins

Anyway, thanks for taking a look!

[upbeat geyser]

Yeah, the analog button trick comes in handy sometimes.

[proud ether]

And as my final trick... Blinka!

[rustic stag]

@tender palm we removed the ad you posted here, we're OK with links and things to maker stores and more, but it needs to be more than just an advertisement for your company, please do not do that again unless you're part of the community and have been participating more than just a link to a product you are selling

[upbeat geyser]

Tried the "re-use an LCD from a broken laptop" trick, it worked!

[sterile lodge]

Yeah, I have a couple of those setups.

[lunar venture]

My first website (still in development) https://www.tg-techie.com/index.html

[sterile lodge]

Nice @lunar venture . Is it just html or do you have it running on a backend like django?

[lunar venture]

Rn staticly generated with Jekyll. Netlify is doing the hosting. What's Django?

And thanks😁

[sterile lodge]

Django is a python based backend

[lunar venture]

😱😱 what

[sterile lodge]

It's more of a framework really

[lunar venture]

Do you need a server or host to run it?

[sterile lodge]

Yeah, I think. I haven't really done anything with it, but I thought you might like doing it in python.

I've mostly done PHP

You could set up your computer locally for development though or a raspberry pi.

Here's something interesting for you: https://codecondo.com/5-platforms-provide-free-django-app-hosting/

[lunar venture]

Thank you!

[sterile lodge]

You're welcome

[lunar venture]

I've heard php is a pain, for you is that true?

[sterile lodge]

Not if you use a framework. I like using laravel, but have used a couple others as well.

I've been working with it for about 20 years though, so maybe I'm just used to its quirks.

[lunar venture]

I'm sorry, I forget: what do you do for work?

[sterile lodge]

Web Development using PHP and JavaScript

[lunar venture]

Freelance?

On the topic of languages; I recently tried Java, for frc robotics, and was shocked at how 'not that different' from python it was. Granted it is quite typed but... I was quite surprised

[sterile lodge]

Yeah, Java and C# are very close syntactically.

I think maybe you're thinking of programming looping and control structures and they're about the same in most languages.

[lunar venture]

Good to know, I will miss namespace when it comes time for c. How did you find cp?

[sterile lodge]

I've been a customer of Adafruit for years and have been following along. I had dabbled in it a little with some projects, but when I was asked to write a driver for the RA8875, I really dug in and have loved programming in it ever since.

I even took a version of one of the programs I dabbled in and integrated it in the FeatherWing library.

[lunar venture]

Who asked you to write the driver?

[sterile lodge]

ladyada

[lunar venture]

Nice

[sterile lodge]

I had made some speed improvements to the Arduino RA8875 library before that.

There were a few pieces of hardware I was considering using CP for and noticed the lack of drivers for some of those including the RA8875. I wrote about that in my CircuitPython2019 post at: https://blog.adafruit.com/2019/01/14/makermelissas-take-on-circuitpython2019-circuitpython-adafruit-adafruit/

How did you get into writing CircuitPython?

[lunar venture]

I started with Arduino during my sophomore year after my grandpa reintroduced me too Star trek the next generation. I've always loved making prop and toys and when saw Arduino could make things actually function I challenged myself to make a really tricorder, having already made a plastic model via 3d printing. Then when Adafruit released the feather m0 express I hopped on the chance since I had already taken a python class in highschool.

[sterile lodge]

Nice

[lunar venture]

When you say character in the cp2019 do you mean text?

[sterile lodge]

It's always good to have a project when learning something new

Yeah, that's what I meant.

But we have that now

[lunar venture]

Agreed, my college essay is basically "learning by doing is awesome/addicting." Thanks for sticking around to chat. I should really head to bed.

Have a great night 😁

[sterile lodge]

Ok, have a good night.

And great choice on the College Essay.

[ocean gull]

I made a tutorial on Hackster.io on Jinx / espArtNode, a really fun way to control neopixels leds over wifi with a ESP8266.
If you want to control your leds with sound/images/video or display text it's really easy with it!
https://www.hackster.io/140002/control-neopixels-like-a-dj-dea733

I'll take the opportunity to thanks Matthew Tong (esp firmware) and Sven Karschewski (jinx) for their respective works.
If the ESP8266 firmware was useful to you, feel free to donate to Matthew : https://www.paypal.me/mtongnz

[hardy oracle]

https://github.com/petrofang/dial-a-hue this is a little color picker circuit I came up with..I drew the schematic in Eagle and soldered the components to an Adafruit permaproto board. This is one of my first times soldering

[hazy mesa]

Using my last.fm account to grab my currently playing track and display it on the PyPortal. Album art, artist name, track name and album name.

[signal loom]

Our wonderful FTC robot. Made it all the way to states this year. For the second half of the year, we switch gears and domains to go from land to the sea. Our MATE ROV construction period begins today. This bot was built using Pitsco parts, 3D printed and laser cut components, and is driven by a android phone

This was a group project from FTC team 8490

[cosmic blaze]

Python is scraping a web page/web app that has a RED, YELLOW and GREEN status every 8 hours. It finds the status of the website app and updates an AIO feed with the color values. An AIO dashboard listens to the feed and displays the color of the status. The industrial light indicator listens for serial. So another python script is listening to the AIO feed, when it sees a change, it sends a serial command to display the appropriate color. Here, a test script is running from Red to Yellow to Green.

I'm very impressed with how fast mqtt updates are and how synchronized the dashboard and the light indicator is...

[mint cliff]

very cool

[leaden laurel]

how do you get into show and tell?

I would like to show a project on show and tell...

[scenic siren]

It's over tonight, but join the #live-broadcast-chat before 7:30pmEST on Wednesdays, and the link to join is posted.

[leaden laurel]

oh... ok.. thanks kattni

[outer pewter]

Hi all, now the Adafruit nRF52 board support has been released for Platform IO thought you may be interested in an example project: https://github.com/jeremypoulter/nrf_scanner

[quasi vault]

Hi folks. Am I right that the Sprite class that @terse totem used in the Hallowing project is now a TileGrid of size 1? https://learn.adafruit.com/hallowing-jump-scare-trap/code-with-circuitpython

Also, what I'm really looking for is a way to flip full screens on the PyPortal. I expect to have 1-5 "screens" that have buttons (like the SoundBoard buttons) and need to quickly flip between them. Is the TileGrid the fastest solution? Is there a lower-level "write this full bitmap to the screen" API?

[sterile lodge]

Maybe you can adapt the slideshow library to flip between screens?

Also, the tilegrid as you described it is my understanding as well.

[quasi vault]

Thanks @sterile lodge

[craggy parrot]

@outer pewter thank you for the platformio project for the feather_nrf52832 --- worked great -- first time using platformio - very nice.

[proper dirge]

Now that I've got my workspace sorted out, I am starting to get back into 3d printing and fusion 360. I needed a pen holder for my desk, and figured it would be a good project for a first print back. Figured I may as well share it here as well.
https://www.thingiverse.com/thing:3478156

[outer pewter]

@craggy parrot no worries, I did a few updates today

[signal loom]

New Badge for an event coming up. QR code is an affiliate link and scores you a few hundred off

[strong phoenix]

@signal loom very nice! there is no laser emoticon 😦

[signal loom]

@strong phoenix I have designs for one

[solar yew]

http://www.repairfaq.org/sam/lasersam.htm

[long vine]

Nothing too fancy, but today I harvested some dill I grew in the middle of winter (I live pretty far north, so we only get a couple of hours of sun every day). The lights were made using some regular LEDs and a 3d printed case I designed. Used it to make salmon in shrimp sauce. It was tasty.

Here's a video of me making it https://www.youtube.com/watch?v=qgkW6qDAbeQ

[dusk zinc]

@quasi vault Cursory reading of the slideshow lib is that it uses one displayio parent group and loads new bitmaps from file for changes? Another way is to have several groups chilling in the background (if enough RAM) and switch by board.DISPLAY.show(splash1) ... board.DISPLAY.show(splash2) Haven't tested enough to figure out performance variables, but curious how you end up solving it.

[solar yew]

Hi, here is a fun way to use the gigabrain controller with a DIY 3d printed robot arm EEZYbotARM. If you use a RaspberryPi we are looking for your feedback with the controlling experience. Send me a comment/question https://youtu.be/FLwQfgVE51w

We have a new feature also for Arduino: Export a movement that uses multiple servos as Arduino code that can be installed to Adruino boards. The movement in video can be exported to Arduino board also with this. If you are interested in testing this feature, send a comment. You can export a movement like this to Arduino https://youtu.be/aYXkq367deU

[dense finch]

https://www.youtube.com/channel/UCk5k-zDWVQuH5xBDswh2Ppg?view_as=subscriber this is my new YouTube channel. I hope you all like what I have made so far! Let me know if you do or don't. I was specifically wanting to show you guys the smart door I recently made.

https://www.youtube.com/watch?v=kNzoVx4oE8w&t=76s

[mint cliff]

Drive my robot

https://letsrobot.tv/robocaster/robotdriver/robot/85440279

Adafruit motor control board and raspberry pi

[solar yew]

https://youtu.be/m0-CBM---Oc got my poofer pretty dialed in now. arduino for inputs/outputs, raspberry pi for web control, monitoring

[solar yew]

https://cdn.discordapp.com/attachments/284227500098191360/555939028919123989/Screenshot_20190314-212158_Chrome.jpg

[solar yew]

https://youtu.be/M4bMpyxxehI

it is mostly unfinished, enough for me to watch some netflix on it for now

[toxic stirrup]

First of the escape room boxes. Circuit playground underneath the lid, using light pipes to bring the neopixel light to the surface.

[toxic stirrup]

And the inside...

[solar yew]

not as much as a mess as mediacow

on the inside

[lunar venture]

two things:

1. the animation of the logo on every reload
2. docs are starting!

https://docs.tg-techie.com/

[onyx glade]

Educational coding for beginners: electronic fashion,
https://youtu.be/bTQyfauzoP8

[lunar venture]

https://docs.tg-techie.com/docs/tg_docs_utilities/python_to_html.html

[dry idol]

https://youtu.be/ASNm3MH3WHU

[proud ether]

Blinky, now blinker! @upbeat geyser

[timid shore]

https://github.com/therooftopprinz/PiLoRa

https://cdn.discordapp.com/attachments/358116916012908544/557077839879340032/52591462_420256725379102_1102202592290668544_n.png

https://video-hkg3-1.xx.fbcdn.net/v/t42.9040-2/10000000_414244016048200_6793954559313051648_n.mp4?_nc_cat=100&efg=eyJxZV9ncm91cHMiOlsib2VwX2hkX2NvbnRyb2wxIl0sInJsciI6MTUwMCwicmxhIjoxOTcwLCJ2ZW5jb2RlX3RhZyI6InN2ZV9oZCJ9&rl=1500&vabr=621&_nc_ht=video-hkg3-1.xx&oh=0bf609ce55b5d7073a797f51c876ad6e&oe=5C8F6BF0&cbk=1

[hidden saffron]

The start of something dangerous...

operated safely with an 8' pvc pipe

[upbeat geyser]

Blumlein? Spot welder? Can crusher?

[hidden saffron]

coil gun, can kinda see the coil in the second photo

1.5F caps at 70V. Next step is to find a step up transformer to get the voltage up

Took roughly 90 seconds to charge and could punch a bolt mostly through a 1/2" piece of plywood

[mossy carbon]

Made my own design printing the other ones now (King at the moment)

[mossy carbon]

The king is in the building xD

[odd shuttle]

Little tabletop arcade machine. (RetroPi, with a Circuit Playground Express controlling the lights in the marquee.) I needed an excuse to learn how to use the router table at my local makerspace.

[bitter hazel]

@odd shuttle cool! Where did you get the case?

[grave shadow]

Printer conversion Wip. Cr10-mini frame and gt2560 main board W/ 2004LCD

[warped cobalt]

Shiney!

[plush gorge]

Design, learn, release a little blue smoke, design better..

[molten burrow]

already got the parts, so no reason to make it in cad. but i decided i wanted to. turns out, fusion360 is the best over solidworks, freecad, and sketchup

https://youtu.be/FbrC9-lKmL0

[maiden wasp]

My IOT Office Door Sign, (PyPortal), now with independent refresh timers for background images and Twitter status texts. https://github.com/mikerenfro/iot-office-door-sign

[hollow blaze]

👋 Made a couple different e-paper name tags recently, with the goal of having a "badgelife"-style electronic badge that didn't actually require any electronics knowledge, just software and crafting. After Adafruit started stocking the new red/black/white Inky wHATs, I had to try one out with an RPi0. If you don't mind the color fading issue, you can put one together 100% from parts from Adafruit, no soldering required. http://vitor.io/e-paper-name-tag-inky-what

[solar yew]

Shopping in south africa for parts is torture.. no stock or lack of or being limited...
and then the prices are X5 that of the US

[leaden frost]

@solar yew Maybe one of those listed as a distributor close to you for Adafruit parts might be of help. Good luck. https://www.adafruit.com/distributors

[solar yew]

I literally buy my parts from that very distributor

[solar yew]

XD

[solar yew]

Communica is overly expensive
http://www.communica.co.za/
And their website is made for the blind.
Stock is outdated.

Mantech
http://www.mantech.co.za
Expensive
old stock
Website is from the dark ages.

Pishop
http://www.pishop.co.za
Stocks the bare minimum
But has new pi boards in stock
only one that stocks the pi 3 A+

MicroRobotics
http://www.robotics.org.za
Stock is always ranging from new to cringe
Website sometimes lists on stocked items
Best stock sadly still not the cheapest
Gets side tracked with industrial parts

Netram
https://www.netram.co.za
Stock is limited
mostly old stock
Full of junk

http://www.electronics123.co.za
Someone please inform them what year it is.
Website is oblivious

https://www.diyelectronics.co.za/store/
Slow
expensive
Nothing 5 other stores cant supply
at least has a few adafruit products

RS Components
https://za.rs-online.com
Great big selection
messy website
Some parts are expensive

That's about 5 extra unlisted hacker spaces

[grave shadow]

fan ducts in, and motherboard enclosure

[warped cobalt]

3D printed fans?

[unique jackal]

Adafruit boxes make great prototype project boxes. 😃

[solar yew]

@warped cobaltnope

[solar yew]

i was digging for a cheap small amp for my project

after looking thru a few "not so cheap modules"

i remembered i have this

2 screws and a laugh later i had a working amp for my portable

[solar yew]

You know it's Xmass When you get a box full of new modules and components from adafruit.

🎄

[solar yew]

And the sent me a 12v fan instead of a 5v fan... GJ.. WP.. microrobotics shop..

[tacit relic]

My first PyPortal-based thing is a bus arrival monitor for my local bus stops using the JSON data feed from NextBus.

[modest raven]

Render of a KiCAD-designed 8-button keypad using a Pro Micro. Would you guys be interested in an ItsyBitsy version? #sparky since with Rev 1.0 I missed a trace that was shorted to GND.

[dark flax]

how big is that

[modest raven]

30 by 75 ish milimetres

[dry idol]

https://www.youtube.com/watch?v=7tL9pi7u-ig&t=1s

[solar yew]

My verdict on the Banana pi m2 Zero
-Should have never left the prototyping stage.

[sinful trout]

you can say that about a lot of SBCs

[solar yew]

Great news Microrobotics is replacing everything defunkt free

So the dead battery and incorrect fan will be replaced asap

[upbeat geyser]

Good for them!

[solar yew]

I got retropie running on the banana pi.
it was not easy.

[upbeat geyser]

Think you might write a how-to guide?

[solar yew]

I think i should yeah

But basically you need to build Armbian
Get the drivers from http://linux-sunxi.org
Get wifi working
Next you need to configure the retropie script to see a mali as the platform
from here it gets easier.

[long vine]

Hacked together a wake-up light since I work nights and it'll help me get up in the morning
https://www.youtube.com/watch?v=boEhv6Mx6f8&t=36m2s

[modest raven]

The keypad kit is almost done. Couple more tweaks to work out. Contains PCB plates and the previous keypad PCB. Has support for single-colour backlighting and Neopixel underglow.

[hearty grotto]

@modest raven What wizardry are you using to upload multiple pictures in a single post ? I don't seem to have that superpower ??

[modest raven]

iOS lets you do that by using the paperclip icon more than once

[modest raven]

Inside view

[lucid bloom]

My ASCII photo terminal is nearly done I have it printing from a regular printer and a receipt printer, here are some of the latest tests

[vernal ferry]

@solar yew nice! Is the darker ones just the regular image or a reverse?

@modest raven what'd you use to design the pcb? which keys are those?

[modest raven]

1. KiCAD
2. The keys are Kailh BOX switches from NovelKeys

[vernal ferry]

@modest raven thanks :)!! nice work!

[modest raven]

@vernal ferry No problem, and thank you

[lunar venture]

@rustic stag pure circuit python: https://twitter.com/tg_techie/status/1112467124134531075?s=21

TG-Techie (@TG_Techie)

https://t.co/W9nSvcbzW2

▶ Play video

Twitter

[rustic stag]

@lunar venture nice keyboard!

[lunar venture]

thanks, char switching takes a while tho :-(. still loving the pyp 😃

[ashen plank]

Not my work, but I found someone else's PyPortal project showing blood glucose data and I thought it was really neat. https://www.hanselman.com/blog/DisplayingYourRealtimeBloodGlucoseFromNightScoutOnAnAdaFruitPyPortal.aspx

[patent nimbus]

This is an older project of min but thort people might like it , its a quartz candle holder with neopixel ring below housed in a laser cut base 😃

[upbeat geyser]

I suspect that's not quartz, but selenite.

[patent nimbus]

could be right quartz was our best guess

[upbeat geyser]

In any case, it looks great lit that way.

[patent nimbus]

Thanks 😃

discord is not letting me upload the video but looks really nice animated

[solar yew]

So the shop that sent me the wrong fan
sent the new fan to some random address and according to the waybill was delivered.

[solar yew]

Been their customer for years and now this starts to happen.

[bright rampart]

I just made this using an Itsy Bitsy board 😄 https://www.instructables.com/id/Automaton-Origami/

[solar yew]

A big shout out to micro robotics
They got all the parts i ordered to me in a few hours.

[dark flax]

(apologies for the image quality) https://cdn.discordapp.com/attachments/349239459167993857/563044496712007711/unknown.png

it's a Lua-powered SAMD21 microconsole (OLED + Capsense = ) built for my school's STEM program

[upbeat geyser]

Slick, looks useful for making badge-type projects.

[dark flax]

I originally wanted to design a badge and then I realized we don't have the budget for that many RGB LEDs

(because why else would you want a badge)

[rotund stag]

How was the alignment on your soldermask? It's the only complaint I've had about OSH Park's PCBs

[dark flax]

I've heard about that

lemme get a closer look

it looks aligned

maybe it's just one of their fab suppliers

[upbeat geyser]

Generally soldermask is lower resolution than copper, so it can make sense to have larger openings in the soldermask (I think it's called something like "copper-defined pads".

[dark flax]

yeah makes sense

[dry idol]

https://www.instructables.com/id/Arduino-3D-Printed-Sumo-Bot/

[unkempt plover]

Hello My daughter (Josie) and I both have projects to show. Josie made a Harry Potter sorting scarf with her CPX and I have a jean jacket that I made a "wave activated" flag using a flora, neopixels and magnetometer - but I'm having trouble with the direction readings, Elizabeth

[torn viper]

@unkempt plover https://hangouts.google.com/hangouts/_/4iqwiwung5baflcdd7gkto6nxqe

[lapis jasper]

@unkempt plover sorry it was full! please come back next week to show it off

[tacit relic]

Second PyPortal project, a random Cards Against Humanity generator (it took a while for it to show one clean enough to post)

[warped cobalt]

That is far cleaner than any CAH game I ever seen!

[hearty grotto]

In this project, I recorded the signals from my Keyes remote, then recorded a combination of signals from my Sony remote. The program on the Arduino now listens for specific Keyes remote signals, and in return, it will emit the pre-recorded combination of Sony remote signals.

So what that means, is that I can press a single button on the Keyes remote, and Shazam !!! The TV is on, Sound is on, Channel selected (etc etc).

Could be any combination of IR remotes really !!

https://arduinobasics.blogspot.com/2019/04/universal-remote-grove-infrared-project.html

[plush gorge]

Say hello to my little friend. 😄 I've finally settled on a face & figure for my OSPoC mascot. Any thoughts on a name for my little friend? My little Ork friend is going to be the mascot for the low cost Open Source POwer Chair that I've designed & am working to bring to production. 😃 #MobilityForAll

@rustic stag Not sure if this violates anything, if it is please don't hesitate to say. I'm just really proud of this project and am excited to share & talk about it. 😃 So I really hope that my posting about this is okay, if not sorry.

[upbeat geyser]

Cool! For some reason, I want to call him "Rodney".

[plush gorge]

@upbeat geyser Lol! I like it, reminds me of Rodney from Stargate Atlantic. Ok, it's on the list. 😃 Thanks.

[upbeat geyser]

That last picture with the circuitry is a little disturbing. It reminds me of the "fembots" from Bionic Woman.

[plush gorge]

Lol, wow ya that is wrong looking

[warped cobalt]

Normal in shows from that decade

[upbeat geyser]

You printed your own phone?

[west dune]

yup

I am using a orange pi 3G board

Here is the instructables for it: https://www.instructables.com/id/The-Orange-Pi-Smartphone/

[upbeat geyser]

Slick! So that's why you wanted to load Android onto an Orange Pi.

[west dune]

Yup, it also has sim card support

[solar yew]

Just released a movement (supports simultaneous movements for multiple servos) live recording and export support for Arduino and compatible controller boards. Video shows how to record a robotic movement live and export it to Arduino device. Any comments, please just send a message. https://vimeo.com/329054573

[dry idol]

https://youtu.be/1H6VXkBMxOQ

[reef flax]

I have just updated my tool for compiling c/c++ projects. It is an alternative to makefiles and CMake. I have just added a very handy feature. The tool can now act as a shebang at the top of a c++ source file making that source file executable, just as you would with a python file. 😃 https://github.com/HamAndEggs/appbuild

[patent nimbus]

Good day all just want to make sure my maths is right . Is show and tell gose live at 19.30 eastern time that makes it 00.30 uk time ?

Im finish work late so might try catch it on wensday

[scenic siren]

@patent nimbus That sounds correct? I would check through Google though. We have Daylight Saving Time which sometimes puts it off by an hour.

[patent nimbus]

Cool 😃 keep forgetting about daylight savings

[tepid otter]

Hey all, I wanted to experiment with the Johnny-Five framework + Arduino and I decided to make a self-watering-plant-system: https://github.com/hectorleiva/self-watering-plant-system

[sinful trout]

Hey guys. Just got home from the Makerspace with some new stuff. This is for the 2.13" e-ink Featherwing + feather m4 Express + battery. Still have some sanding to do.

And then there is this

[lapis jasper]

https://youtu.be/uruvgVJNg_g

[upbeat geyser]

Got curious about core memory and decided to give it a go. Don't have any tiny ferrite cores handy, so I tried a larger one with 10 turns through it to increase the magnetic field without having to run dozens of amperes through it.

Writing a 1

Writing a zero

[torn viper]

@lapis jasper I see your 3 gameboys and raise you 1 c64 https://drive.google.com/file/d/1zeMi_hzKevuAIn-txuWl5CIbwbiklKOW/view?usp=drivesdk

apologies for the shaky cam

[dry idol]

https://youtu.be/BbrNHNgJp44

[untold vigil]

A PyPortal CircuitPython project I've been working on.

[lapis jasper]

@torn viper had to request access

[torn viper]

Oh oops

Link sharing turned on now

[lapis jasper]

@torn viper looks cool! we need a circuitpython mod tracker 😃

[torn viper]

:)

[lapis jasper]

makes me want to get my c64 going

[torn viper]

Good

The tracker I used is called SID Wizard

It has "instruments" which are baiscally different SID waveforms and filters but I didn't know what to use for this so it's just using sawtooth

And afaik it's compatible with a couple midi carts

[lapis jasper]

nice! I'm hoping to make a version of my cart for other systems too

[torn viper]

I think I'm sorta on to something with the instruments

https://drive.google.com/file/d/1x_GDQBhV_1k72eIpfhqXAXQD67LzC1oe/view?usp=drivesdk

I'm not a musician so it's very hard to get it right

the speed is maybe off too

[humble plaza]

How are we doing Show and Tell now that Google Plus is out?

[patent nimbus]

did they shut every thing down i throught it was just the + social bit ?

[sterile lodge]

Show and Tell is currently done on Google Hangouts, which seems to still be going. However, it may be gone by this time next year in which I'm sure Show and Tell will have moved to a different platform by then.

They post the hangout link in the #live-broadcast-chat channel right before it starts.

[patent nimbus]

thats good to here its still going . cool will keep an eye out . do u have to ask first before going on or do you just need the link ?

[sterile lodge]

I think lately it's just posted and like the first 9-10 people who get in are on the show.

Unless somebody drops off after showing.

Usually, that's about all there is time for though, so it works.

[patent nimbus]

rightyo 😃 im off work the next two show and tells ( its 00.30 when it airs over here ) so might try drop in for one of them : )

[sterile lodge]

Sounds great! I'd love to see what you have.

[patent nimbus]

👍

[humble plaza]

@sterile lodge cool. Thanks!

[sterile lodge]

yw

[molten burrow]

so far so good... but im getting myself bogged down in thinking too far ahead. keep trying to hold myself back

1 step at a time

😛

[long vine]

Common project, but I made a little kit that lets me convert an old windshield wiper jug into an automatic plant watering system. (Timecoded to end of video for those who don't want to see the whole making of)
https://www.youtube.com/watch?v=Fqjugu2UjO8&t=35m51s

[long bison]

I've been playing around with the NeoTrellis M4 using bare metal Rust. Wrote a little accelerometer demo: https://github.com/atsamd-rs/atsamd/pull/51

showing all of the supported orientations

hrmm guess it doesn't like gifs, well click through to the PR to see it animated

[knotty thicket]

@long bison Nice!

Ok, so I would like to show something on show and tell this Wednesday but it's more of an idea. I have some 3d models of it on Autodesk Fusion 360. Still have to learn some Arduino stuff to actually complete the actual project. Would that be ok? I would be able to explain it in about five minutes or less.

I know that most of the show and tellers have a visual so I don't know if that would be ok?

[lapis patrol]

So, I'm having trouble with depression and find it hard to motivate myself to do anything including showering regularly but today this happened - https://youtu.be/yPlpD7GSdQU

I couldn't sleep so I did this all in less than 4 hours between 10:30pm and 2:15am UK time.

The motivation struck and I managed to just go for it.

[marsh quest]

@lapis patrol looks awesome - late night hacking is WHERE ITS AT 😃

[lapis jasper]

@lapis patrol play celeste if you can. it's supportive

[topaz flicker]

A drone/quat-copter board I am working on. It will be using a NRF24l01 and a ItsyBitsy M0. I would love to program it in circuitpython. (Still is looking for libraries on the NRF24l01)

[knotty thicket]

@topaz flicker Noice!

[topaz flicker]

Yeah I'm only waiting for some parts I ordered before I do more work on it.

[knotty thicket]

Sweet

I always hate waiting on parts. Ugh. Especially if you order from China.

[topaz flicker]

Later I might post some circuit schematics on how I'm making it. (Currently building it of the top of my head, but most of it is an easy concept to put on paper)

[knotty thicket]

Cool. I hope to see the schems!

[lapis patrol]

Version 2, fixed code for smother rainbow scrolling.

PS this looks really good in person

[knotty thicket]

@lapis patrol Nice work!

Does it use CPX?

[lapis patrol]

thanks

[knotty thicket]

No problem

[lapis patrol]

CFX?

[knotty thicket]

I meant CPX

[lapis patrol]

CPX?

[knotty thicket]

Circuit Playground Express

[lapis patrol]

Gemma M0 and a NeoPixel strip I cut in three.

[knotty thicket]

Oh nice

[lapis patrol]

Yellow and White wires are original and unused red black and blue are new, gemma is connected with nuts and bolts

[knotty thicket]

Sweet

[lapis patrol]

My plan is to power the Gemma from the original circuitry 2x3 AA battery holder, alternative power jack and on/off switch

I just need to locate a 2-pin JST connector. Or can I power a Gemma via 3v or Vout pads?

[knotty thicket]

I can look it up for ya.

[lapis patrol]

ta

I couldn't find the info I was looking for when I read the Gemma page

[knotty thicket]

One of the mods might know and if by the very very very small chance they don't one of the admins can help for sure.

[lapis patrol]

I could just try it and see, either it will work, it won't work, or it will break.

[knotty thicket]

Yeah

@lapis patrol found the PDF.

Here's a screenshot

[lapis patrol]

Thanks ❤

[knotty thicket]

No problem

[topaz flicker]

Could not completely get it finish, but here is most of the idea.

[knotty thicket]

Sweet, dude!

I hope to showcase my project tomorrow night!

[glad solstice]

MIDI foot controller in the works. Going to be programmable to the user. The final product will, of course, be a standalone ATMega circuit.

(Foot switches are installed, just have to finish deciding where the rest of the jacks are going, then gotta re-print the enclosure)

[hidden pine]

Can I be on show and tell today?

[lapis jasper]

@hidden pine chat for it is in #live-broadcast-chat

running out of time for tonight but check out that chat channel next week for the link

[hidden pine]

Found the link, thanks!

[craggy parrot]

Work in Progress...Deer Deterrent DevIce - uses LoRa , on an m0 RFM9x and a Raspberry Pi with RFM9x Bonnet. Triggered by PIR or remotely from RPi or via AIO....

[sinful trout]

Completed!

[knotty thicket]

Awesome!

[sinful trout]

Thanks!

Took the PiGRRL 2, added the two joysticks, trigger button, stereo headphone jack that turns off the speaker, a real time clock, and a light pipe for the Powerboost 1000C. And the design on the case is 3D printed in two colors.

[knotty thicket]

Wow, nice!

How long did it take for you to apply the mods?

[sinful trout]

I've been toying with the design for a couple months. Once a new Makerspace opened right by me that had Ultimaker 3 3D printers I knew I had to make it. So I printed the case last weekend and assembled it all last night. Just got done with the software

I'm going to see if the Powerboost can handle the load. If not I'll figure out a way to boost the available current. There's still a little room in the case

If it does well, I'll put it all up on thingiverse

[knotty thicket]

Sweet!

Sounds more like a weekday project then a weekend project. Lol

[sinful trout]

It was a lot of fun seeing it come together

[knotty thicket]

Yeah, I've been reverse engineering an old sound board and I've already got the components and stuff. So, I know what ya mean

[torn viper]

https://twitter.com/sajattack/status/1119085324213219328

Paul Sajna (@sajattack)

Playing with the hd44780-driver crate for @rustembedded with my @adafruit Metro M4

Twitter

[unkempt olive]

Woah - you're developing in rust on Metro?

[torn viper]

@unkempt olive yep

I added the support for samd51 and the metro m4

[unkempt olive]

😮 - I'll have to look into that when I've finished playing with the pyportal

[torn viper]

https://github.com/atsamd-rs/atsamd

[unkempt olive]

it just seems like the natural language for microcontrollers

[torn viper]

@long bison is planning a pyportal board support crate

[unkempt olive]

😮 😮

I need to find more free time

[torn viper]

haha don't we all

[lusty siren]

I could use another week or so of time every week, that's for sure.

[topaz flicker]

I got 2 of the Google AIY Voice kits for ~$15 each at target yesterday. The only thing I'm having trouble with is the mini hdmi of the raspberry pi zero.

[night wedge]

@topaz flicker You'll need a couple of these then: https://www.adafruit.com/product/2819

[leaden orbit]

long time no see, but im still working on this custom keyboard project. finally got a layout on the PCB that allows me to attach it to the plate via screws 😅

and the pcb itself

i used a neat little trick that Blender has for instancing meshes to get the positioning of the screw holes perfect - radial symmetry really is amazing https://gfycat.com/PertinentSophisticatedCrossbill

[topaz flicker]

@night wedge Thanks!

[placid moss]

Using PyPortal to track my running goal for the year. Strava API through google apps script, then pulling json from my published Google Sheets.

[warm crescent]

@placid moss looks great! And great idea, I think google apps script + published google sheets might be a cool way to keep trend data for any sort of activity API — like wiki edits or Robinhood stocks 😄

[placid moss]

@warm crescent Thanks! Yes, there are all kinds of possibilities for google apps script.

[patent nimbus]

I found this paper weight on the way home yesterday so challenged myself to a small one day build to make it light up 😃 what i dont show on the photo is theres a uv light as the jelly wish is glow in the dark 😃

[long bison]

we got Rust running on the PyPortal!

working on getting the ILI9341(?) display working now

[solar yew]

Two NXP 74HC595N shift registers driving 7 segment 4 digit LED display.
Arduino IDE program running on Trinket M0.

Firmware:
https://github.com/wa1tnr/tkm0_7seg-a Arduino IDE / Cpp

http://adafru.it/450 Shift register
http://adafru.it/865 7 Segment display
http://adafru.it/239 Breadboard
http://adafru.it/3500 Trinket M0

http://adafru.it/3258 Panel mount USB
http://adafru.it/753 0.1 uF disc ceramic
http://adafru.it/3366 Stacking headers

.. and several resistors. 470 ohms by the look of them (been a while).

[bitter hazel]

https://madcomputerscientist.ninja/2017/01/25/alexa-pi-pi-ir-blaster-jarvis-alexa-skill/

Has anyone here worked done any projects that have aws services integration? I begin to wonder why amazon is not as close to the maker community as google and even microsoft is

[west dune]

Finished my 30W bluethoot speaker.What do you think?

https://www.instructables.com/id/DIY-30W-Bluethoot-Speaker/

[solar yew]

https://youtu.be/fsoCrptKCdU

[solar yew]

I'm working on a transcript (of what was typed into the Forth interpreter running on NTM4) but the main point of the video was to do a quick test of videography, and publication on YouTube.

To get this resolution (and duration) was a very long upload to YouTube's server farm.

openshot video was the software used, on Debian, to translate the camera's video to a more YouTube friendly format.

Videography platform is Mabef M/22 easel (holding NTM4) and a smaller (Creative Mark 'Van Gogh') easel, set in the drawer of the M/22 ;)

The two devices (smartphone/camera and NTM4) are about six to seven inches apart.

[toxic stirrup]

Decided to finally put my Adabox004 items to use in a music player/box using a Neotrellis keypad and a small OLED I had. Simple $2 box from the craft store. Plays both from the SD card and various streaming sites from the Internet.

[livid dirge]

Making an air quality sensor from a few Adafruit parts. Intro to using Adafruit IO as well. 😃 https://www.jaredwolff.com/homemade-indoor-air-quality-sensor/

[bitter hazel]

Anyone here tried using ROS (Robotics Operating System). AWS seems to be pushing it with its AWS Robomaker service

[leaden comet]

Not my repo, but here's the repository for the bluetooth rubber ducky

https://gitlab.com/mjsir911/blueduck

[leaden comet]

Doing some in-car work on the feather wing gps module on the way home from pycon

[rough dew]

Finished the projects section of my website!

https://www.timbermonson.com/microcontrollers

[upbeat geyser]

Those are some nice projects and writeups! Well done!

[rough dew]

@upbeat geyser thank you so much!

[rough dew]

Tried hand-sewing a cable channel for the sash!

I’m not too good, but I’m learning :)

[rough dew]

Aaaaand finished with assembly!

Now to program this monster of a project!

[bitter hazel]

@rough dew awesome wearable build. What do you plan to do with it?

[bitter hazel]

I wonder if other IoT developers in this group feel the same way about Amazon's lack of focus with makers and hobbyists

https://madcomputerscientist.ninja/2019/05/10/question-box-a-portable-hacked-google-assistant/

[upbeat geyser]

I stopped doing business with amazon years ago, their corporate practices don't seem to be good for anybody but Jeff Bezos.

[leaden orbit]

using slots to create internal cutouts 😬