#general-tech

1 messages · Page 103 of 1

plush jackal
fickle grotto
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oh wow! thanks for the resource there

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so do I put this driver in any specific place?

plush jackal
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Backing up a second. Download the SSD1327 library (you can find it in the library bundle on the CircuitPython.org) and put that library in your /lib directory on your board

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Then you can peruse the bundle folder of examples and find the ssd1327 example.

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Copy this file to your board and rename it code.py so it will run automatically when you boot up.

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But you’ll need to modify this file to use SPI. I’ll look for an example.

fickle grotto
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wait, code.py always runs on startup? that's nice to know 🤔

steady gulch
#

@fickle grotto what are you programming on ?

plush jackal
fickle grotto
#

yeah I can see the SPI modifications. I'm a CS student so all the code is fine by me, I just have zero experince with physical component work. I'm using a raspberry pi B+ and a Zero W.

plush jackal
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I’m not too familiar with raspberry pi so maybe someone else can help on that part.

fickle grotto
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I mean the setup seems simple, I'll get into it now that I have all these proper resources. Thanks a ton :)

plush jackal
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Not sure if code.py runs at startup on raspberry pi or what you have to do to run that code.

steady gulch
#

yeah so you are using adafruit blinka on a Pi, not a microntroller board (which is why you mentioned PIL)

fickle grotto
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ah, yeah no prob. I can manage with the python/pi side of stuff

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though I am starting to think I should get an adafruit board 🤔

steady gulch
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I'm not familiar with using blinka unfortunately, I believe the circuitpython libraries are isntalled through pip

fickle grotto
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yeah I've got them all sorted I think

steady gulch
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as in pip3 install Adafruit_CircuitPython_SSD1327

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I think ?

fickle grotto
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oh ill try that 🤔

vapid wedge
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I am generally unfamiliar with adafruit products after ~decade of change

fickle grotto
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Yeah, that seems to work. I'm assuming that pip is grabbing from a general database of known scripts? as opposed to directly grabbing from a github raw url yknow

plush jackal
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If you get no response here, you may want to query over in the help-with-raspberry-pi channel if you think any issues are specific to that. You’ll get a better audience than in general.

fickle grotto
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yeah, sorry if I'm clogging up general chat 😄

steady gulch
plush jackal
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Not a problem, but just want to get the right eyeballs on your issue. Gotta run. Keep us posted in your progress and post a picture in show and tell channel if you get something displaying!

steady gulch
fickle grotto
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ah, nice.

steady gulch
#

I think you need to give it a repository with the appropriate info to get it from github

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if it's not on pypi that is

fickle grotto
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yeah, again im not sure of the inner workings but just a wget works for me 🤔

steady gulch
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if it's not broken... 😉

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don't change it !

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wait...

fickle grotto
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so If i grab the .py file off of the github, how do i "install" it?

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like where do i put it lmao

steady gulch
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in the same directory as your code for example, but the issue mentions that blinka does not do I2C displays, which means that driver might only support I2C and not SPI ?

fickle grotto
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all the code ive seen seems to support both

steady gulch
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hmmmm

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well I don't know

plush jackal
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You’re running SPI right, then use the four wire mode, it looks like it’s supported in BliNka. Gotta run, hope you can get a cat picture showing on your display!

fickle grotto
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yeah its SPI everything, thanks @plush jackal :)

dusk tide
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So, I saw that the Pi Pico version of CircuitPython released with UART support. I had been running MicroPython on my PiPico, but wanted to move back to CircuitPython. I did so, and now the file system on it is broken. It mounts read only, and has a lot of garbage instead of a file system. It shows I/O errors, and fragments of files that I deleted in the past. Any idea how to fix that?

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If I blow MicroPython back on it, it works fine. I can only read the device using Thonny though.

dusk tide
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Odd, if I plug it into my windows box, it works. Just not on any of my linux boxes.

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Oh, but as a one meg device. This thing has 16m flash, I think.

dusk tide
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Well, that's a new one. I put it on the windows box, updated to the newest CircutPython and it came up telling me there were errors on the drive. I clicked the 'fix it' and it did. All is good now. No idea what really happened though.

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Oh, and 2M on the board, not 16M. Not sure where I got that.

fickle grotto
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So I got the display working.. kinda. The data seems to be sent to the display in an incorrect order or something. The display flashes and every other line of pixels is in a different position 🤔 odd

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idk its all messed up

plush jackal
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@fickle grotto strange. I read one comment somewhere to try a lower frequency on the SPI bus (lower baudrate setting?) and see what happens. If you can’t find the answer while googling add a question on help-with-circuitpython or raise an issue on the GitHub library.

lofty steeple
#

Does anyone know if Adafruit sells a product similar to Velleman's Light Organ? https://www.eio.com/products/velleman-mk114-low-voltage-light-organ-minikit?variant=15310139457602&utm_source=bing&utm_medium=cpc&utm_campaign=**LP Shopping 2.0 - Catch All&utm_term=4586406599024318&utm_content=Catch All

EIO.com
Velleman MK114 Low Voltage Light Organ MinikitDefault Title

Buy and save on Velleman MK114 Low Voltage Light Organ Minikit with fast shipping and unbeatable prices, you're good to go with EIO.com.

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I'm looking for something like this that can translate an audio input (from an amp) into flashing light

past axle
#

Hey Everyone! I have a 15 year old daughter interested in STEM, she would like an RGB led strip for her room. I'm thinking this would be a good way to introduce microcontrollers and hands on electronics. What hardware, neopixel would be recommended for a young teen?

barren plaza
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which programming language does she want to use?

past axle
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She's had a high school class that worked through a bit of python so probably start with that

barren plaza
fickle grotto
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@plush jackal I tried modifying the buadrate and that didn't fix the issue. I then moved to trying to understand the display's initialization sequence in its driver to see if I could modify some hard-coded settings but I didn't get too far.

I finally went and downloaded some code examples I found from another source, and it worked! The code examples load up and everything, they do have their own driver though so that's odd🤔

There's just one last issue. The example code loads the screen quite slowly, it scans left to right top to bottom and takes a whole second to draw a whole new image. Surely this isn't its intended speed? All other resources I've found seem to get quite a good fps

past axle
barren plaza
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I haven't used the pico myself, I just know that it has a lot of computational resources and it's the new hotness. I'm a big fan of the feather m4 and it is more mature. Which neopixel you pick depends in part on the power supply you can/want to use

wise venture
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I think it might be safer to stay away from the Pico for now, since CircuitPython for it is still under very active development

barren plaza
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ah good call

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I'm just excited about it >.>

plush jackal
past axle
wise venture
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I think maybe something with a screen on it, like the PyPortal, would be good

fickle grotto
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Yeah it's seems as though if the baud rate is too high the display does nothing at all, but the upper limit still seems slow 🤔

wise venture
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How much light does she want to have? To start with and later on?

past axle
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I'll have to look into that. Do you guys know if there are any adafruit kits that would have everything, like neopixel, powersupply and controller, plus any required caps and resistors?

barren plaza
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not that I know of

wise venture
past axle
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Probably Start with a meter or two

plush jackal
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Strange that it takes a second to draw. With SPI, it's not going to be blazing fast, but 1 second sounds like a long time.

wise venture
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But portal's out of stock. Let's see what else

barren plaza
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is the titano out of stock?

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nope! Titano is in stock, could adapt the project for the titano

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would cost more though

past axle
wise venture
plush jackal
past axle
barren plaza
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you can also use its onboard sensors for cool things

past axle
wise venture
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Exactly my thought @barren plaza. Start with lights, get lured with the possibilities!

barren plaza
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just note that circuitpython uses a lot of the resources onboard and you might run into a wall if you try to do too many things, that's why I initially recommended the M4 boards but as @wise venture says this is a great place to start with ucontrollers

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plus it has a cool form factor!

past axle
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Cool

wise venture
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I think that the display case for it would be a nice touch too

barren plaza
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and CP is a great place to start too. Cool gift from cool parent!

wise venture
barren plaza
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I just wish they made a waterproof one, it would finish a project I've been halfway doing for years

wise venture
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There's a snowglobe-like one: https://www.adafruit.com/product/3722

DIY Snow Globe Kit

Not merely a snow globe, but a show globe! This custom container is durable, clear and round, with a large flat screw-on top and a press-fit rubber stopper. The stopper makes a nice seal, ...

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Good luck to you and your daughter, @past axle. If you have any more questions or she runs into issues, the community here is always happy to help out! 🙂

past axle
fickle grotto
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it's pretty straightforward

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so im 🤔

barren plaza
wise venture
past axle
fickle grotto
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@plush jackal ah, after looking closer it seems at though between these two drivers I have: The one that works uses the display as a general SPI device, maually sending GPIO signals. Whereas the driver that kinda works but kinda doesn't uses displayio.

Could this be the source of the speed issues? I can't imagine that directly writing each bite through the GPIO is as fast as using displayio.

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but idk 🤔

urban coral
plush jackal
fickle grotto
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ah I just meant through RPi.GPIO the standard(?) GPIO library

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yeah good idea

fathom wagon
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Does anyone know of a self hosted program with a web interface that lets you view images?

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One that can display them in a slideshow?

static stream
fathom wagon
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Thanks

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I'm trying to reuse an old kindle as a photo frame

fathom wagon
static stream
fathom wagon
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Looks great

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Thank you

vivid ledge
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can someone give me a video on how to interface with bytes adding them subtracting them in circuits

sinful edge
#

Is there any bad chemicals in an electrolytic capacitor because I just hooked one up wrong

subtle folio
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@sinful edge The electrolyte varies, but it may be corrosive. Clean your hands and anything else it might have got on.

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I don't think any of them have anything super toxic

sinful edge
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Ok

subtle folio
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(and if you're feeling paranoid, try looking up an MSDS - material safety data sheet - for whatever capacitors you have; you may or may not be able to find one)

real scarab
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Did it explode?

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If not, then it's probably fine. Especially if you weren't using very high voltages.

zenith cape
#

I got a box of components at a local estate auction, it is full of electronic goodies a lot of newer stuff too... one thing I got that interested me is a small panel mount ammeter with a coil for detecting amperage. Looks exactly like this, https://www.ebay.com/itm/Panel-mount-Square-shape-100A-AC-Digital-Ammeter-Amp-Meter-White-LED-display/402674745820. It is a D16-22FSA model with no branding. I was intrigued by it, so I wired it up to 120V, cut a power cable and installed the coil, spliced with wagos and plugged into hot rework station and turned it on. It read 0.00A, while the kill-a-watt read a value near 5A. Anyone have any experience with this type of ammeter? Does the orientation of the coil matter? Insulation? I got 2 of these, they were both still in the box with a generic "Ammeter WHITE" label on the top, no documentation was around.

ornate abyss
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Is there a schedule for the live broadcasts. Specifically I'm trying to find out what time FTDoL is scheduled tonight (knowing full well that it's just a prediction of when it will occur, ha).

plush jackal
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?showtimes

worldly shaleBOT
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Desk of Ladyada - Random hacker times
JP's Product Pick of the Week - 4pm ET Tuesdays
3D Hangouts - 11am ET Wednesdays
Show & Tell - 7:30pm ET Wednesdays
Ask an Engineer - 8pm ET Wednesdays
John Park's Workshop - 4pm ET Thursdays
Deep Dive w/Scott - 5pm ET Fridays

plush jackal
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Probably around 8-9 eastern if memory serves me right, so called “ladyada o’clock”

pine igloo
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So im trying to create a static website (so websites like netlify can host it) but then also talk to an api where the static website sends info to api, api does some calculations, and then static website spits out the result. ik it's possible because i've seen it before, but does anyone know how to do that? I can host the api on my personal PC btw

zenith cape
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@pine igloo are you saying the api writes HTML code to the server with new values? Rinse and repeat?

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not sure how a static website can send data, because that would make it a dynamic website

pine igloo
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Yea exactly, but somehow ik people that have done it

zenith cape
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interesting, I am sure it can be done

steady gulch
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well that's not a static website then

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do you mean to use javascript to update the content of the page ?

zenith cape
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but i agree, how can a dynamically updated site be static? You can have static HTML generated by API, but the generating part is dynamic. I guess you can return full blocks of HTML via API.

steady gulch
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having a thing that generates a static site is another thing

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so like, you have a dynamic site that manages the backend, and it triggers an update of the static site through whatever your static hosting service allows

zenith cape
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Yes, I agree.

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@pine igloo do you want the entire files to be generated each run of API, or just certain data to be updated?

pine igloo
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certain data

steady gulch
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circuitpython.org is generated from github by a bot, and uses javascript to allow for the language menu to let you download each version

pine igloo
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so static website gives unique input every time, api does calculations, then static website displays output

zenith cape
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@pine igloo seems that html, css, javascript and server-side API is all that is needed. Do you already have the API?

pine igloo
zenith cape
main hemlock
sand tiger
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Question: I would like to charge a rechargeable coin cell battery (NICD or LIPO) with a small solar panel.

Is there a simple chip or circuit I could use for that? PCB does not have much real estate so it has to be very compact ...

main hemlock
undone minnow
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Hi how would you have a tactile pushbutton power ON/OFF an arduino when pressed for 3seconds?

viscid finch
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not sure if this would be the right solution for it, but you could use a capacitor delay circuit with a relay of sorts https://www.build-electronic-circuits.com/rc-delay-element/#:~:text=A capacitor is kinda like a tiny little battery.&text=And you can use this,one with a smaller value.

Build Electronic Circuits
The RC Delay Element - Build Electronic Circuits

The RC delay element is a way to create a time delay in your circuit by connecting a resistor and a capacitor. It’s super simple. And very useful. The ‘R’ is a resistor, and the ‘C’ is a capacitor. That’s where the ‘RC’ comes from. And here’s how you connect the two: How does it […]

undone minnow
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Thanks @viscid finch

viscid finch
undone minnow
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For the RC Delay @viscid finch when the capacitor is full you, would you need to discharge it?

viscid finch
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you would have the relay or whatever is on the other side only flip when there's enough voltage

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a relay won't flip until there's enough

undone minnow
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Ok, that sounds likely to work

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what if you release the pushbutton?

viscid finch
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though, there's a lot of variables to consider and I haven't built such a circuit before. The relay would drain from the capacitor as your feeding current into it and if you held it down for a while, it would cycle on/off

undone minnow
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That's what I was wondering

viscid finch
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is this battery operated?

undone minnow
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Yes

viscid finch
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what would be wrong using a latching button?

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could probably do it with just relays as well

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well, and the initial charge up with cap/resistor

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one that stays on while holding, and then the flip flop

viscid finch
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would be interesting to see if 2 relays and the charge circuit would work

covert ocean
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can I ask a question?

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it's not a technical one.

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just about alpha beta pruning

wise venture
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Hi @covert ocean. You're better off asking your question, so that those who aren't immediately around can answer in their own time. So it saves considerable time, especially for you, to ask and check back after a while to see if people have responded! 😊

covert ocean
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okay

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which nodes are pruned if we use alphabeta pruning?

bleak ospreyBOT
karmic obsidian
#

Desk of Ladyada - RP2040 Feather prepares to take flight! https://youtu.be/qkN2TXqj59M

YouTube
Adafruit Industries
Desk of Ladyada - RP2040 Feather prepares to take flight!

Come on by to see what's on our desk tonite: Some Quectel cellular modules came in, these may be used in our next-gen FONA boards. We also are getting ready to launch the RP2040 Feather - let's take a look at our nice silkscreen PCBs, and also how we're going to test and program these boards on the production line. There's some things we learned...

▶ Play video
fallow flicker
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I went insane and wired a VGA cable to 14 darn wires, and it was torture

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how do you guys do this

vapid wedge
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So, I made a fan...

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except it was too small

inner linden
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So, I guess you can say... not a fan.

plush jackal
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Guess that’s not your biggest fan.

vapid wedge
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I mean, all I did was very basic circuitry

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then I tested it. It was not very good at sucking solder fumes from some distance away

undone minnow
undone minnow
pale steppe
#

for (float i=0.0; i<=3*PI; i=0.1){Serial.println (i<=PI?0:2} i used this function to print square wave in arduino serial plotter using atmega2560 but can not work on teensy 3.2 .what might be the cause? Please can some one assist me

upper coyote
#

Well, the posted code is broken in several ways, so I doubt that exact code worked anywhere else. First in the for loop the "next" part sets to a constant which can never meet the termination condition. And then later you have a syntax error (grouping characters not matching).

pale steppe
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@upper coyote it is able to upload onto the teensy but does not should the square wave

wicked matrix
#

I wonder what that means

unknown.png
inner linden
#

Gotta keep 'em separated, that's for sure.

barren plaza
#

[[STOCK CONFLICT]]: these displays are only for displaying the current $GME price

fallow flicker
#

update: i wired the 14 wires to a breadboard, resistors, then finally the Arduino

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i managed to make Conway's Game of Life on my TV

fallow flicker
#

welp time to solder it all onto protoboard

frozen wren
#

Which Aliexpress scope is half decent?

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Trying to figure out how a video signal is being sent

upper coyote
#

@pale steppe Sure, you can upload any text (or probably even binary, if you gave it right filename); but if it's not a valid Python program, the interpreter won't do anything [good] with it. You posted a completely broken piece of code and asked for suggestions, my first suggestion was to at least make it valid.

pine igloo
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HTTPSConnectionPool(host='www.google.com', port=443): Max retries exceeded with url: / (Caused by SSLError(SSLError(1, '[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1125)')))
Would anyone know why i'm facing this error? i'm currently trying to ping google with proxies to check the quality of the proxies through repl.it (im building an api that uses proxies)

plush jackal
barren plaza
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I was unaware of any 7 segment memes! I'm only cursorily following the GME craze

hot grove
# frozen wren Which Aliexpress scope is half decent?

Take a look at the ALM2000, it is a nice USB scope from Analog Devices, DigiKey sells them, For $100, and the SCOPY software is free. This is the kit that Analog sponsors, as part of their education outreach. Many colleges have their students use them for EE programs. It is quite useful for debugging all kinds of serial glitches, as well as run of the mill troubleshooting.

pine patio
#

whats better- a 4k 120hz monitor, or a 8k 60hz monitor?

viscid finch
#

are you gaming?

pine patio
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no

viscid finch
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need more real estate, diagonal sizes of both, distance from, graphics card outputs? lol

pine patio
#

3 monitors is a mess, but what about 1 8k monitor as wide as your whole desk

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that would be a 65" screen for my 55" desk

viscid finch
#

would that be too tall?

pine patio
#

gotta use the old neck

viscid finch
#

what about an ultrawide?

pine patio
#

you pay more for less

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consumer tv form factor is the only way to pay a good price on a computer screen

viscid finch
#

TV's usually aren't as good for color accurate work

pine patio
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im red shifting pretty hard anyway

viscid finch
#

I mean, it's possible it could work if you don't mind moving your neck around a lot (viewing angles might be of concern depending on the TV though) would also have to make sure your GPU can drive it

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and we all know how GPUs are absolutely awful to get at the moment https://www.youtube.com/watch?v=jXHAGgdLbBw

YouTube
NikTek
PC Gamers Reaction to GPU Prices Skyrocketing!

What a way to start 2021, amd and nvidia gpu prices have skyrocketed like real real bad.Last Generation GPUs Like RTX 2070 are going for the same price as the 3090 and let's not talk about RX 580 which is going for 800$.

Track used:

https://youtu.be/kSdNriBzHN8

Hey You, Wanna Connect with me? Here's where to find me on Social Media:

Discord...

▶ Play video
pine patio
#

to drive 8k you need hdmi 2.1 which is only in 3000 series nvidia or 6000 series amd

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rtx 3080 can drive it for 700 dollars

viscid finch
#

see above video lol

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there's a massive GPU "shortage"

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and there's a lot of scalping going on

desert cipher
#

they was startng to work on that when texas froze

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thats massive backstep

viscid finch
#

doesn't help that miners want the cards as well

desert cipher
#

yeah

bitter gale
#

I don’t understand needing a highend card to run a blockchain miner woulda thought thatd need more cpu and ram than anything

viscid finch
#

thousands of cuda cores for parallel operations

pine patio
#

dang i dont see it for sale at any price

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those dipwads should have priced it higher than 700, theyre leaving hundreds of dollars on the table

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and real customers cant get them, just chumps who hit refresh on webpage

viscid finch
#

bots are buying them up, not people, well, people using bots to scalp lol...

pine patio
#

this feels idiotic even looking at dealing with getting a card that supports hdmi 2.1

viscid finch
#

yep

pine patio
#

monitors however, are available for the price they say

bitter gale
#

Yup welcome to 2021

viscid finch
#

I could actually probably sell my 4 year old GPU for a profit if I sold it now which is crazy

pine patio
#

gpus are just chunks of silicon, why is that the shortage and not the more complex monitors

viscid finch
#

different fabs/scaling

pine patio
#

i can get a 65 inch 8k monitor no problem

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for msrp

viscid finch
#

and more back stock

pine patio
#

i might wait tho. thing weighs 60 pounds and cost 2000 dollars

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in a year it will be 50 pounds in 1200 dollars

viscid finch
#

true, could always use it as a 4k display in the mean time too

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and then up the graphics settings upon having a new card

soft walrus
#

what channel should i go to with help in soldering raspberry pi zero pins?

pine patio
#

can't even do that, available cards can only do 4k with displayport

soft walrus
#

because i'm about to start in the afternoon

pine patio
#

thats pretty general

soft walrus
#

like

#

just general tips is all i want

pine patio
#

set the iron at 575 and do it

soft walrus
#

ok i should double check that the iron i bought can go that temperature

#

but i also bought lead free

pine patio
#

if it can't be set like that, it takes more care

#

lead free takes even more care and higher temp

soft walrus
#

it says the lead i bought melts at 440.6 degrees F

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wire*

pine patio
#

maybe 500 or 550 would work then

soft walrus
#

i made sure it was lead free because i don't want it in me

pine patio
#

those will get it done but dont have temperature control

viscid finch
#

you'll still want adequate ventilation

soft walrus
#

I can open up a door and have like 3 fans in my garage

pine patio
#

I use lead solder. its tried and true. never know what the new fumes will do

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you spend a lot less time with fumes if you get it right and don't have to rework anything

#

the real danger is particles, not fumes

soft walrus
#

ok i'm just clumsy is all and i swear to god if lead gets on me i will have a mini panic attack.

pine patio
#

touching food after you have residue on your hands is a danger

soft walrus
#

right should wash hands

pine patio
#

the pine rosin fumes are not a big danger

#

the biggest danger is suction desoldering things

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they blow a dust cloud of particles every time

soft walrus
#

oh okay... should i get a gas mask?

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i mean i do have lead free

pine patio
#

if you need to do a suction desolder, do it outside

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it gets particles all over your work area

viscid finch
#

you should be fine with fans and minimal solder work

soft walrus
#

maybe i should just do it outside in general

pine patio
#

a lot of people suspect lead free is bad for your health in other ways

soft walrus
#

well shoot ;0;

pine patio
#

I've worked with people who have used lead solder everyday for decades without ever using a mask or especially good ventilation

soft walrus
#

hmmm

#

so

pine patio
#

the stuff you smell is actually pine rosin

soft walrus
#

ah

pine patio
#

who knows tho, best to be safe

soft walrus
#

this thing i got from amazon does have tempurature control tho

pine patio
#

oh cool

soft walrus
#

so long as it gets the job done and the connection is proper

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and i'm not getting lead in me

#

i'm not complaining

viscid finch
#

should be good

soft walrus
#

thanks guys

#

that's all the tips i needed

#

i can rest easy now

bitter gale
#

There is probably more lead in the water you drink that you will get from soldering anything

limpid herald
#

As @pine patio said if you have adequate ventilation there shouldn't be any problem

pine patio
pine patio
#

I ordered one. interesting idea to use stackable project boxes that dont have lids

#

the box on top of it is the lid

pine igloo
#

I'm good with 6-gallon milk crates at USD $10/crate in lots of 12 crates. ;)

#

And then just cardboard boxes that fit inside milk crates.

#

I have one high-priority box with lots of red antistatic packing.

#

I discharge myself on any nearby metal object a lot more often than you would see someone do at the office where you work. ;)

#

If I were a tiny bit more serious about it I'd find more efficient means to enclose larger projects in anti-statics (similar to the large anti-static envelopes computer motherboards used to ship, in).

bleak ospreyBOT
icy moth
#

ah yes, I finally have internet on my desktop

#

hand to pull about 60ft of cat6 cable

barren plaza
#

woot!

clever nexus
#

@pine igloo Milk crates make good bit coin mining enclosures. Lots of air flow.

wise venture
#

That's like 6 feet of cat60, right?

pine patio
#

milk crates seem kinda melty for holding things that could get hot

inner linden
#

...that's a lot of cats.

thick prawn
#

What's the biggest mess you guys caused on accident?

#

I once set a transistor on fire, and had a portion of my house smelling of burnt silicon, and my table covered in some ashes

flint swift
#

yo

pine patio
#

i blew up an outlet at college by not floating a scope

#

it burned off everything past the hole in the end of the plug and the outlet stopped working

#

the scope was fine

#

I went back to visit 15 years later and that socket is still broken

viscid finch
#

not really a big mess, but I shorted out I believe a webcam board using my multimeter ends since they touched/clashed (was a while back). Anyways, just be careful with that lol

lost lily
regal pebble
#

Does anyone know if there are reverse mount "Neopixels"? I found this video from @humble jetty but she doesn't mention the part number or how it worked out. Ultimately I'd love to make a PCB with capacitive touch traces on one side and reverse mount RGB LEDs on the other. Covered with black LED acrylic I think it would be awesome, both for user interfaces and as a display panel...

vagrant gyro
regal pebble
#

Thanks @vagrant gyro, I hadn't seen those, they look perfect!

#

Those will be fun to solder! 🙂

pine igloo
#

Is there a component that can restrict power flow from a battery?

#

Or something that will keep a device from turning on until some condition is met

#

Basically I need to be able to immobilize/reactivate an electric skateboard through a custom app

regal pebble
#

I think what you are looking for is a relay @pine igloo

#

Just make sure you are considering safety @pine igloo, especially if this isn't something you work with a lot make sure you get some assistance

pine patio
#

you can use a p-fet to let something turn itself off

#

make it so a pushbutton or sensor can turn it back on, and once the mcu is booted it holds that line high

pine igloo
#

I’m really inexperienced in the domain of electrical engineering, so I’m not entirely sure of the difficulty in achieving this

regal pebble
#

It should be achievable @pine igloo but you'll want to work with someone who knows how to safely work with electronics. From a quick Google search it looks like electric skateboards run from 36V - 48V, which can give you quite a shock, and electrical shorts could cause fires or even battery explosions. In addition to the relay you would need a microcontroller and a way to talk to it.. typically either cellular, bluetooth, or wifi.

viscid finch
#

can't seem to find out the exact connector, does this bonnet https://www.adafruit.com/product/4132 use two of these connectors https://www.adafruit.com/product/4392 on the back?

Adafruit GPIO Expander Bonnet - 16 Additional I/O over I2C

The Raspberry Pi is an amazing single board computer - and one of the best parts is that GPIO connector! 40 pins of digital goodness you can twiddle to control LEDs, sensors, buttons, ...

JST PH 4-pin Horizontal Connector (10-pack)

Designing boards with plug-n-play connectivity is a snap, with STEMMA connectors. Here's a pack of 10 of our favorite 2mm pitch connector - the JST PH 4 pin. These are the ...

idle mirage
#

Hey all, I'm a little confused about this solar charger's LOAD output voltage: https://www.adafruit.com/product/4755 It states it'll never surpass 4.4 V, but what is the minimum voltage it will supply before shut-off? I've been digging through the IC datasheet, but can't seem to find that info. Any help appreciated.

Adafruit Universal USB / DC / Solar Lithium Ion/Polymer charger

This charger is the only one you need to keep all your Lithium Polymer (LiPoly) or Lithium Ion (LiIon) rechargeable batteries topped up. No matter the power source at your disposal! ...

viscid finch
#

@idle mirage OUT - Regulated load output. This pin will provide a regulated output when the input voltage is below the over voltage protection threshold and above the regulation voltage. It will never be higher than 4.4V (but it may dip down to 3V or whatever the LiPo battery voltage is at, if USB/DC isnt plugged in)

#

doesn't say it shuts off at 3v, but it looks like it might

idle mirage
#

Yeah that's what I wasn't sure about, but I suppose I'll just assume that's the shut-off point

vapid wedge
#

How do I know if I have an autoranging multimeter?

#

I have an MAS 830

#

I think it's not an autoranging multimeter

bleak ospreyBOT
limpid herald
bleak ospreyBOT
icy moth
#

The office is really coming together!

image0.jpg
wise venture
#

Wow, even have art on the wall? Someone's efficient!

icy moth
#

I’ve got a few things to unpack once my new work bench arrives 🙂

#

Fun fact, I took that picture of that Big Horned Sheep

somber bloom
#

I just heard about the Raspberry Pi Pico getting Fuzix. I don't own one of these boards, but I do own other boards such as the Arduino and the Adafruit Clue. Has anyone thought of putting the os on these?

wise venture
#

Also, have you considered weighing the carpet in your office now (or before your workbench arrives) and then in 1, 3, 6 and 12 months, to find out just how many parts and trimmed leads and such end up in there?

hearty phoenix
#

Hi

lost lily
wise venture
#

Are most of the parts ferrous to some extent?

icy moth
#

the ends

pine patio
#

i just upgraded my desk carpet to the fluffiest one ikea sells

#

ive already lost a soic8 breakout

steady gulch
#

don't you fear static electricity ?

icy moth
#

Metal desk to ground to LOL

#

I can’t help the carpet since I’m renting

pine patio
#

air is humid enough ive never been zapped at this location

#

ive got an anti-static project tray coming

#

you won't want to see my winter desk pad if you hate static

wise venture
#

What kind of animal caughs up a hairball that size?

pine patio
#

its a baby sheep pelt

#

wool, basically

wise venture
#

Must be nice and toasty

pine patio
#

its more fluffy than imaginable

vocal vapor
#

Any idea on when the 10A 5V power supply will be back in stock?

solemn field
#

@vocal vapor Nope. Sign up to be notified and you'll be among the first to know 🙂

viscid finch
vocal vapor
#

Isnt mouser company only?

#

As in, only selling to companies

viscid finch
#

nah

steady gulch
#

you can look on Digikey too

viscid finch
#

can also find Adafruit stuff on DigiKey as well

#

lol

vocal vapor
#

Digikey had them on backorder

#

I'll order from Mouser then :3

pine patio
#

mouser and digikey used to have a minimum where there was a 20 dollar fee if you went under but i think they stopped that

vocal vapor
#

Well, two of those is $45 + tax, so no worries

#

Also, I screwed up. Ordered relays for a project, and accidently ordered Single Coil Latching instead of normal ones. So, have to spend $70 on new relays as well

viscid finch
#

the joy of prototyping

#

spends money, oh, these won't do what I want, oh well, I'll use them in another project ha

spare summit
#

Does anyone have suggestions for cameras to use for streaming / project videos? I'm going through Amazon for webcams and they've all got these nasty critical reviews about how bad the quality is, faulty drivers, etc etc.

coral moat
#

Unpacking kernel headers oh lord shoot me, this is taking forever.

#

Operation was interrupted before it could finish WHAT??

wise venture
barren plaza
#

but how many socks were blown off? even number?

viscid finch
#

@spare summit could potentially use a smartphone camera. They tend to be pretty decent quality (I'm using the NDI HX camera app but there's a lot of other apps). There's a small amount of latency over the network, but pretty alright for the most part

#

another option is to use something like a GoPro with an HDMI capture card

wise venture
barren plaza
#

it is the answer to life, the universe, and everything

calm snow
karmic obsidian
keen lichen
bleak ospreyBOT
karmic obsidian
lament ocean
#

Did anyone ever played with those piezo 433 mhz lightswitches?

ocean skiff
#

hello all. was wondering if someone could suggest electronic,basic,not so costly, available in india and something i can do without a 3d printer. i understand all this cuts a lot of projects [also i cant code..oof] pls help me out.. wanna do something!!

lament ocean
#

@ocean skiff Tryout to make a Relaxation oscillator no coding, basic parts, no 3d printing

ocean skiff
#

if you dont mind telling what does it do?

lament ocean
#

Well it's an Oszillator, so it oszilates

#

Most people put leds to the output so they have something that's called a blinking led circuit

ocean skiff
#

where exactly is this used @lament ocean

fallow iron
#

@lament ocean I have done a project with 433Mhz rf outlet switches. I don't know if it is similar since I don't see where the piezo part comes in, but you can switch on lights with them.

lament ocean
#

There are lightseitches like actual switches you glue to the wall and the piezo provides power@fallow iron

#

@ocean skiff In blinking led circuits

fallow iron
#

Or does the pressing of the switch provide the power

ocean skiff
lament ocean
steady gulch
#

oh hi new friend

unknown.png
worthy fractal
#

@steady gulch Looks cool, how does it compare to the qt py rp2040 that is coming out soon?

steady gulch
#

well I can't say yet, but it's cute too

steady gulch
#

I like the symmetry, and the fact that they made the boot select button be a user button too, not as much the fact that the LED is a 3-pin (R G and B) rather than a neopixel or dotstar

#

good choice of pins: the 4 ADC, a pio-capable group of 8 GPIO

worthy fractal
#

While a neopixel would be better would it really make much of a difference on this board as there isn’t enough space it expose the extra pins you would free up anyway?

dense elk
#

The first episode of Tim Hunkin's "The Secret Life of Components" has been posted to YouTube:

raven moat
#

hi so i'm trying to make a github repository for code of my macropad.
I have uploaded the files for circuitpython, autohotkey and deej non of which are owned by me but are all open source. is there anything wrong with it/anything i should not do?
https://github.com/kavinplays/picopad

GitHub
kavinplays/picopad

This is a repository where i store files for my macropad made using Raspberry Pi Pico - kavinplays/picopad

vapid wedge
#

I am trying to build a fume extractor

#

but I bought a Noctura computer fan

#

with an extra complication

#

instead of dealing with two pins

#

I now have four

#

all I wanted is to turn on and off

#

I guess I should look up a Noctura wiring diagram

barren plaza
#

Computer fan control is pretty standardized.

#

Adafruit even makes an I2C product for controlling 4 pin fans

vapid wedge
#

currently, I just want to hook it up to a circuit I already know works

#

I'll figure out the rest later down the road

#

I am still a newbie

#

when I learn something new, I pretty much go to my toolbox of building the simplest thing or learning the simplest thing and then building up my foundation

#

understanding the individual components

#

I just looked up and I think I have a pretty good idea of what to do

bleak ospreyBOT
strange thorn
#

?showtimes

worldly shaleBOT
#

Desk of Ladyada - Random hacker times
JP's Product Pick of the Week - 4pm ET Tuesdays
3D Hangouts - 11am ET Wednesdays
Show & Tell - 7:30pm ET Wednesdays
Ask an Engineer - 8pm ET Wednesdays
John Park's Workshop - 4pm ET Thursdays
Deep Dive w/Scott - 5pm ET Fridays

bleak ospreyBOT
vapid wedge
#

So I have a big honking fan

#

Well, a 120mm by 120mm fan

#

it's hooked up to a 12 volt battery

#

a small one

#

wonder how long it's going to last

vapid wedge
#

So I put probes on my tounge with my multimeter

#

nothing happens

#

I think my multimeter is manual

steady gulch
#

as opposed to tongue-activated ?

hot snow
#

Never dealt with full bridge rectifiers before and I need one for a DC fan

So, do I need a specific one to convert 12v AC to 12v DC?

Or does any one work, it just converts whatever voltage goes in from AC to DC, up to it's current and voltage rating?

Looking for stuff on Amazon that can be delivered today
A stereo amplifier I own has an AC 12v fan and I am replacing it with a DC 12v fan

fiery bluff
#

I have a question about using my Adafruit PiOLED - 128x32 Monochrome OLED Add-on for Raspberry Pi with Arch. Should I ask it here or another channel?

wise venture
upper coyote
#

@hot snow The only thing that really matters in a bridge rectifier is that the diodes can carry the current required. As long as you aren't using the output for something big (like a Mecha), nearly anything will probably do.

#

@vapid wedge What were you trying to measure with the meter on your tongue? As long as both probes are in the saliva at the surface, you should be able to see a resistance value. Not much else that you're likely to see with that.

vapid wedge
#

@upper coyote I was. I didn't get any of the value I expected.

#

nothing change

#

Even when I put it on 200K ohm

shadow mauve
#

I'm trying to find a 30mm 12v dc 3pin fan that quiet any suggestion on witch company is reliable

pine patio
#

every time I solder something, the next day I notice the iron is still on

fiery bluff
#

Haha, no. That would be cool, but they probably wouldn't be so confused about Arch and python. 😂

dusk tide
#

WOOT! I just got the GPS module (BN180) to work with CircuitPython, and Pi Pico using UART. It's a little thing, but I am excited.

lost prawn
#

I broke a mosfet (9997GH) on my TV mainboard and I have a spare mosfet (P10NK60ZFP) I can use to replace the broken one. But I'm not really sure how to check the compatibility between the mosfets.

📎 9997GH.pdf
bitter gale
#

Like one of them spa timers connected to the plugin that goes like an hour

pine patio
#

i could put it on a smart plug

#

spa timers have a ticking

#

i require silence

bitter gale
#

Lol

#

Either one would work

pine patio
#

theres this new power strips where each outlet is smart

#

for 25 dollars each

#

nice braided right angle cords

bitter gale
#

There are lots of options these days

pine patio
#

theres no excuse for any outlet to not be smart

#

i should put my coffee warmer on one. its so annoying turning it on and off every day

inner linden
#

...and this is why, ten years from now, after the machine uprising, you'll be making coffee over a campfire, telling folks how nice it was when there was electricity.

pine patio
#

they said we wouldn't even need electricity anymore, everything would be powered by tiny nuclear plants with infinite fuel

bitter gale
#

And that’s when we started growing 5 arms children

wise venture
pine patio
#

If a technology came out that provided unlimited power batteries, but guaranteed damaged DNA and the end of the human race 200 years from now, would it be widely adopted?

thick flax
#

Happy birthday ZX81. Also happy birthday to the first 3D horror game. 😉 ZX81 Monster maze https://youtu.be/tGf4jdRbCuk?t=212

YouTube
Old Classic Retro Gaming
Sinclair ZX81 Game: 3D Monster Maze (1981 J. K. Greye Software)

A 1st-Person Adventure game where you are in a maze roam area being chased by Tyrannosaurus Rex. Once you are spotted by T.Rex, you chase run as fast as possible to avoid being eaten.

This is the first ever 3D Game to be released on the home systems and on computers, which pave the way for games like Wolfenstein 3D in the early 1990s

Due to h...

▶ Play video
#

I loved this game. Trying to write my own version really got me hocked. Also got me into ASM coding on the z80. At 11. 🙂

#

Putting the ZX81 into the freezer before a coding session was a good way to not have a crash for a couple of hours. Saving every ten minutes to tape was a must.

#

There is just one generation that knows the pain of rampack wobble. 😄

vagrant gyro
#

"saving to tape" 🙂 ah, memories....i'm trying to remember how one cued up a specific program? i think i remember writing down tape index counter locations maybe?

bitter gale
pine patio
#

they would probably successfully lie and say its harmless, everybody use it

#

is it possible we are using poisonous technologies that we falsely believe are safe?

steady gulch
#

I remember listening to the tapes in a tape player

pine patio
#

with if tapes released a gas that took 10 iq points from the human race

steady gulch
#

you know the roman empire crumbled because they started drinking in lead cups, poisoning themselves to become stupid ! (I'm pretty sure that's either a legend or a joke but)

pine patio
#

its worse, they did know

#

and they were using lead as sugar

#

just a little bit won't hurt, cake for special occasion

#

probably like how we use meat preservatives. sure, we do know that 2 pieces of bacon per week increases your prostate cancer risk by 50%, but whatever

#

bacon is good. amiright?

steady gulch
#

I'm not sure it's 50%

#

hotdogs are good though

pine patio
#

it was some small amount of red meat per week that got you to 50%

#

but thats not a lot of extra cancer. 50% of a small amount

#

once its 100s of percents, thats where you see a lot of people dropping dead from it

#

a lot of people eat a lot more than 2 bacons per week

#

I think they started from the 50% number, because that is maybe a negligible amount, then figured how much red meat you can have

vapid wedge
#

it's a myth that the Roman Empire crumble because of lead

#

there's probably no one single cause of their fall

#

likely a system effect...blah

#

this is off topic

pine patio
#

It's very, very general

vapid wedge
#

lol

pulsar nymph
#

What gauge wire is good to keep around for rpi/arduino/electronics in general?

little ferry
#

@pulsar nymph 22 AWG solid core is generally recommended for breadboards, 24 works too, anything smaller doesnt get gripped by the pins very well

#

i have a few rolls of 26 AWG that I use for lots of smaller things, they work in the breadboard too but are a bit loosey goosey

#

26/28/30 are good small sizes for doing [soldered] jumper wires on proto-boards, but you'll want to use 24/22 or thicker for your power lines if you're drawing any significant current

pine patio
#

Any smaller than 30 and normal wire strippers are difficult to make work

wise venture
vapid wedge
#

systems as in what the Roman were doing before wasn't working anymore

#

the Romans were limited by their capabilities to produce food, and the inherent logistical and administrative difficulty of ruling over huge landmasses without access to modern transportation systems

#

they weren't able to maintain their level of complexity and so they must simplify

#

which means less specialization, more simplified social systems, etc

#

you need energy to evolve complexity

#

and you can use complexity to add more energy

#

like funding of public infrastructure to control flooding

#

But that require more recordkeeping, more coordination, more people doing abstract tasks

#

in the hope of further output

#

Anyway, back to electronics

#

Correction: Western Roman Empire

pastel dew
ornate roost
paper oasis
#

I have a Kaypro 2, used to use it to type papers on, and a kaypro 4 that I got at a yardsale. I opened up the 4, and it appears to have a large custom board added to it. Maybe added memory, but probably needed a custom boot disk to use it. Booted on the 2's disks fine, and appeared to operate the same. Someday I'll find someone to donate them to.

wise venture
#

Anybody ever deal with a Mac that mostly wont boot? Either panic or stall during startup (while the apple's visible and progress bar at various states of fill)?

#

For added "fun", recovery and internet recovery don't work either, and apparently, neither does trying to boot from a flash drive with the macOS installer on it

pine igloo
#

@wise venture I used to boot an old iMac into its OpenFirmware prompt system. ;)

fiery bluff
pine igloo
#

I want to be able to turn on and off a switch by sending a text message. So basically, I need a way to control a relay via cellular (or WiFi or even Bluetooth I suppose). How would I achieve this?

#

I’m willing to pay for consultation in this area. Just PM me

idle geode
cloud walrus
#

works for me (from USA)

idle geode
#

Yeah, I see the Discord server can get it too, I wonder if it's cloudflare but they normally have a very verbose, friendly page (it's not cloudflare, they seem to have specific HTTP response Server setting)

#

Works over mobile phone data network for me, very odd. And works from cmd line.

#

@cloud walrus Perhaps I've been barred 🙂 I've emailed support...

cloud walrus
#

Good luck @idle geode

viscid finch
#

@pine igloo it can be done with any of the three options, might be helpful to know the use case though. Will it be controlled from outside the building (and therefore network) or only within range, and what device do you want to access it from. Could the device just be a simple RF remote that you carry with you et cetera

pine igloo
#

@fiery bluff I seem to remember the same situation - an LCD with all the information, but I used a strong flashlight to see it!

wise venture
#

Sadly, a burnt backlight isn't the case here. Got it all apart and cleaned out (dusty in there). Now to try and boot it, and see what gives

#

...if I can find the power cord!

icy moth
#

😅

wise venture
#

There was a spare one around here just a few days ago. I know because I used it! But for the life of me, can't find it. Used a different one, and we're still not looking good

#

sigh

worldly moon
#

hello. Are there any smaller plug-in power cables for the 64x32 matrix?

#

mine go outside of the matrix and end up looking ugly

viscid finch
#

@worldly moon could cut them, strip them and use some Wago connectors like these. Just have to make sure you get the ones that are suitable for the wire gauge

Wago.jpg
worldly moon
#

Awesome. Thank you

pine igloo
viscid finch
#

would you rather have SMS or something built into the phone such as using homekit/google home or such

pine igloo
#

Definitely SMS

viscid finch
#

ok

pine igloo
#

From my understanding, you can actually text over cellular, WiFi, and even Bluetooth. So I suppose Bluetooth would be best in this case due to the short range

#

Although it also depends on the amount of data being moved. BT caps out at 3mbps I believe

viscid finch
#

the only problem I see is that SMS would require a cellular modem/fee, there are modules available for various microcontrollers though. Homekit/Google Home and other automation software/controllers typically can be accessed via voice command or via a built in app (text message app vs automation app). Web control is another possibility

pine igloo
#

Well to break it down even further then, any person should be able to open up their default iMessage/Messages app, and text a specific number that command, without having to have any other app installed on the device

viscid finch
#

I gotcha

pine igloo
#

I suppose web control may be a possibility as well. Would this still use cell, wifi, or bt, or something lower level like http, UDP, tcp?

viscid finch
#

web control would be handled by a web server, you would browse to the buildings external ip and get redirected to the web page which you could then either send values or press a "button" which would then send the command to the Relay. That would probably be the best option, but would also take some work to make it secure (even the SMS option isn't secure, it's secure through obscure)

#

the IP would have to be using dynamic DNS or be a static address as well (since ISPs change your external IP from time to time)

#

but if you did get all that, you could simply browse to "example.com", then enter your user/password (saved credentials for next time), then press the button

#

definitely lots of options (and expenses lol)

pine igloo
#

That would be the best alternative, but I think I like the idea of texting best still. BUT, the command just has to be sent over text. Actually enabling the board doesn’t have to happen from text, it could be from anything

#

If that makes sense

viscid finch
#

I think I get what you're saying, you could have text be the input to change the relay or even a button right next to the controller be the input

#

?

pine igloo
#

Not quite

#

Basically, the user will text the phone # “use” or something. But, to actually turn the board on, that could happen from a server somewhere remote or anything else

#

but a remote server would probably be difficult

viscid finch
#

I mean, if you have the cellular modem, somewhere, would make sense just to have it onsite with the device. Unless there's a "cloud based" service that can handle text message requests and then integrates with some sort of home automation network

pine igloo
#

I guess a text could be sent back verifying that they have paid. But I want the device to automatically activate after they pay

viscid finch
#

that certainly makes the system more complex lol. With payment, you definitely want a secure solution. Would the device activate as soon as they made the payment or would it give a "key" to be used later

pine igloo
#

So it comes back to communicating with the relay through text.

viscid finch
#

so the payment provider will need to send a link to the device to add their mobile number to the authenticated users (for a certain amount of time)

pine igloo
#

Or we could just send the user a link to the payment forum from our end, and provide the payment service with a number for authentication/remembering the user for next time

#

unless you see a problem with that

viscid finch
#

the integration is the hard part, not sure how it's currently set up or what it's for, but having your own web server and payment module would be ideal

pine igloo
#

Google Voice has an email-only SMS gateway.

viscid finch
#

there you could customize what happens when a payment goes through, for instance an http request to the microcontroller

#

third party payment vendors might have an api that can do much the same thing however

#

just haven't researched that ha

pine igloo
#

Well once we receive payment, we can just give the user unlimited access to the device through commands until they enter “stop.” In which case we terminate their interaction with the device

viscid finch
#

oh, I mean if it's forever, that's fine too

#

that's just local code at that point

pine igloo
#

Right!

#

So you sent me a link to what looks like just an LTE based modem, but that doesn’t include a relay. Are you suggesting I pair this with a relay somehow?

viscid finch
#

yes

#

it depends on the load though

#

might have to have a small relay flip a larger one or such, or find one that takes low voltage I/O

#

what is the load, amperage/voltage/AC/DC

pine igloo
#

Well max power is 1200W

#

Battery is 10S3P 18650 Li-ion Battery,36V 7.8Ah

viscid finch
#

hmm, is it being controlled right now with anything and is it just on/off, or is there direction change et cetera

#

and since it's battery powered, might want to have the microcontroller report back low-voltage

pine igloo
#

Yes it has a wireless controller that can turn it on/off as well as change it’s speed (the device is ofc rideable).

#

And yes, that is another concern

#

I’m not sure of where in the entire circuit to put the relay. Should it connect directly to the battery, or replace the main power switch?

#

Which I guess is already a relay since you can turn the device on with the remote

viscid finch
#

I was thinking more along the lines of integrating with the controller of the car/buggy, there's probably a key or some lockout already perhaps that could just cut a simple line and not have to deal with the entire supply

pine igloo
#

So integrate the relay into the controller as opposed to the device itself?

#

Is what you’re saying

viscid finch
#

you wouldn't have to deal with the higher voltage/amperage that way

pine igloo
#

Yea! That’s clever. So the relay we integrate into the remote would interface with the relay in the device, all in effort of turning the board on

viscid finch
#

definitely, cut it off at the source

#

well, control

#

lol

#

as long as it's practical of course

pine igloo
#

Makes sense!

#

But the relay has to be small enough to fit into the controller

viscid finch
#

would have to know the size constraints, and whether electronics could fit wherever and what line could be cut

#

also power would be another factor

#

is the controller a handheld controller then?

pine igloo
#

the controller is handheld, yes. We definitely want the relay to consume as little power as possible.

In terms of fitting the relay in the controller, we could probably remove the power on/off button and circuitry and replace it with the relay since we don’t need it anymore

viscid finch
#

probably would want it on the car/buggy then (since the modem/wireless module and relay would take a bit of space), it has more power capacity and space, could still find a way to turn it off without cutting off the entire circuit between the battery

pine igloo
#

I suppose it’ll be easier to make that decision in a few days when I actually have the device in hand.

What does the power switch normally connect directly to? The battery? ESCs? Is there not a normal?

viscid finch
#

if it's just a standard ESC it looks like it might have a power switch line that could be cut, easy peasy

#

https://www.instructables.com/The-Complete-Guide-to-RC-Electronics/
"The difference between Car ESC's and Airplane ESC's is that car ESC's usually come with a power switch"

Instructables
The Complete Guide to RC Electronics

The Complete Guide to RC Electronics: Hello, my friends.

I have often found hobby RC electronics to be of interest in my projects due to their apparent simplicity and ease of use. However, it took me a while to figure out how to put together all the different components, figure out whe…

pine igloo
#

Ok cool, I’ll read through that.

So is there a reason a cellular controlled relay is better than a Bluetooth or wifi one since the data is as simple as “turn on” or “turn off”

viscid finch
#

depends on range, and requirement really. cellular could be anywhere in the world with just an SMS as you stated. Wifi or Bluetooth would need to have back-end hardware supporting it

#

Bluetooth would be a good low power way to turn the remote or buggy off, however, it doesn't have a lot of range

#

either way, there'll need to be some networked device to get the "token" from the payment provider

#

cellular might be able to remove that step if the payment provider can SMS the device with the details

#

though, other issues might arise from that

#

the authentication per user would be stored on device for one, though, I suppose you could make another command that sends an SMS to just your phone showing all the statistics/users

pine igloo
#

Well why can’t the relay and the user’s phone interface directly through SMS?

Why do we need an authentication token if the above is the case?

viscid finch
#

if you don't mind anyone being able to activate/control the car, a simple on/off command would work through SMS, yes

pine igloo
#

Oh well, you’re right, the relay is only supposed to work after payment has been made

#

And only by that specific phone to that specific relay

#

I see

viscid finch
#

there must be someone managing the charging of the car is there not

pine igloo
#

Charging? Yea there is

#

They’ll just swap the battery out (they’re hot swappable)

viscid finch
#

will they make the handoff to the end user every time or is it just left somewhere

pine igloo
#

Not sure what you mean exactly

viscid finch
#

was just wondering if they are there to hand the car to the customer every time or if it's left somewhere they can just pick it up from

pine igloo
#

The latter, the user just finds it and uses it

viscid finch
#

do they also hot swap the batteries when necessary?

pine igloo
#

Nope, that’ll be the job of yours truly

viscid finch
#

since the added circuitry will have a slow but steady draw of power

pine igloo
#

The relay draws power when not in use? I guess it has to run a constant loop to check for a signal

viscid finch
#

the relay can/could be latching, not a huge deal, but the electronics that receive the SMS/WiFi/Bluetooth would take power

#

therefore you'd want a very small power draw RF based relay, and have the electronics be in the building if possible

pine igloo
#

Exactly yes

#

what does RF stand for?

#

Remote frequency

viscid finch
#

radio

pine igloo
#

ah

#

Okay so the relay will have to be cellular because the user needs to be able to text our number “start,” and then we need to be able to actually start the board from 30+ miles away

#

Which cellular should allow for I believe

viscid finch
#

will the site not have internet?

#

also, the cellular based chip will take power if on either the truck or transmitter which might make you have to swap batteries a lot depending on the usage/amount of time you'll be storing the cars

#

I would recommend having an onsite box that has the cellular components in and powered from AC, and a small RF receiver in the controller or truck that the onsite box communicates/sends commands to

pine igloo
#

Well there won’t be a single site, that’s the issue. So we have to have that long range.

viscid finch
#

I mean a central box with the modem, but that goes RF to the car(s)

#

you take the box with you

#

and just plug it in to AC power within a few hundred feet of the car(s)

#

basically the same place where you'd plug the chargers in

#

in that way, you could actually have one modem control several cars

pine igloo
#

That would be a great solution, it’s just that it won’t work in our case

#

bc the cars will be largely spaced out over a wide area

#

And there won’t be outlets to plug the boxes in everywhere

viscid finch
#

all I can say at that point is to bring more batteries and hope there's a cellular microcontroller that doesn't take too much power lol

pine igloo
#

Fingers crossed

viscid finch
#

another thing that could be done

#

have a "lock" on the car

#

and the user gets a code

#

they enter the code

#

and it unlocks

pine igloo
#

Digital lock or physical?

viscid finch
#

digital

#

even physical could actually work though hah

#

(if they even have combination locks that complete a circuit)

pine igloo
#

That’s a good idea, i’m going to consider that

#

In the case that I go with the other option though, how can I be sure that the cellular receiver and relay are compatible with each other assuming they’re not the same unit

viscid finch
#

most microcontrollers operate on 3v or 5v I/O logic. As long as the relay meets those specs and the specs that each pin is capable of driving in mA, then it can throw the relay. On the other side, you only need a relay that is large enough to bridge the on/off circuit of the car (which should be pretty minimal if it's just a signal wire)

#

keep in mind that if using a relay, you'll also want to use a diode

#

to protect the data pins

#

for the microcontroller side there should be a deep sleep option

#

I'd have it deep sleep then boot up again, and check for SMS, if none, go back to sleep

pine igloo
#

So that relay looks perfect

#

But it says it connect to a feather board which I couldn’t find any info for online

viscid finch
#

Adafruit has a bunch of feather wings that work with their feather boards.
for example the Boron https://www.adafruit.com/product/3998 is feather compatible "You might be looking at this dev board and thinking "Hey wow you know it kinda looks like a Feather!" Well you've won a fabulous prize because it is in fact Feather compatible"

Particle Boron LTE - nRF52840 with Mesh and LTE Cellular Modem

Woohoo, it's time for a Particle Mesh party! And the Particle Boron LTE is bringing it with a double-dose of Mesh and LTE Cellular - so you're covered for ...

#

though it looks like the headers might need to be the opposite M vs F, would have to look into it

#

I'd also look into other LTE boards too

#

and see how easy they would be to set up

#

and the power requirements

pine igloo
#

So that combined with an adafruit relay should work

#

Yes?

viscid finch
#

I would do some more reading first ha, but it looks like it might work

#

you'd still have to figure out how to power it as well

pine igloo
#

Yea this is where my lack of knowledge in this domain hurts

#

I think I’d just redirect the power from the battery through the relay and receiver

viscid finch
#

lot's of documentation to go over. Also, the power would come from the battery, through some sort of regulator to power the board and therefore relay. The relay output would only be connecting the power switch line of the ESC

#

the biggest if is seeing if/how to send SMS via the Boron or other microcontroller

#

rather than just data

pine igloo
#

hmm

#

It looks like Adafruit has a website with a GUI for controlling the feathers. So maybe when a “start” text is received from the user, we can cause automatically turn the board on from our end

#

Which is how I’d want to do it anyway

viscid finch
#

thought you wanted SMS? lol

#

data works if you'll be in the loop

#

but customers wouldn't be able to unlock it themselves

pine igloo
#

Well originally I did want the user to text the board to turn in directly. But earlier we changed it

#

That’s good! Because we don’t want the board to unlock until after a payment has been received

#

So we’ll turn the board on and off from our end based on what the user texts us. And we’ll automate that process

viscid finch
#

definitely a lot of ways to do it. Though, they might have to wait to use it even after making payment, since you probably wouldn't want it to leave it unlocked until the moment they use it (there could be a while between payment and it getting used)

pine igloo
#

Well here’s my thought on the process:

  1. They text the device ID to our number (which will be stickered to the device).
  2. They’re sent a link to enter their payment. Once done they’re sent a list of commands
  3. When they send the “start” command to our number, our system turns the relay on via cellular based on the board ID
#

So it should happen within a matter of seconds I think

viscid finch
#

each car will have its own cell number

#

they sms that number "use" or whatever

#

then, it sends the link back to them for that particular car

#

SMS to the person that texted

#

they buy the time/whatnot, and it stores the phone number in the car SPI memory from the payment server

#

if possible

#

so only authorized numbers could enable/disable

#

or, just have the link on the car

#

they go to the link, put their phone number in, pay, then can text the commands

pine igloo
#

So you’re saying they’re going to text the car directly

#

?

viscid finch
#

yeah, unless you want it go to some server first

pine igloo
#

Well I just want the process to be as simple for the end user as possible. I think having us turn the board on remotely achieves that

#

As long as we’re able to do that from 30+ miles away over cellular

viscid finch
#

they're going to have to fill in payment at some point or another online though, might as well make that unlock the car/give them the ability to do that with SMS

pine igloo
#

Well once they enter their payment info one time for any car, I want to give them the option for us to save it so they can simply text commands to any car at any time in the future

#

Without having to re-enter their payment info

#

So having the number and payment saved on a server will allow us to do that, rather than saving that info locally

viscid finch
#

oh, ok

pine igloo
#

So if I can find a way to connect the feather relay and LTE receiver to the battery, I think we’re golden

viscid finch
#

depends on how much the messaging costs, but you could still do it transparently the same way (user goes to site, puts phone number in, pays, can use phone to unlock car) the car just does a quick check with the server if that number is authorized, then gets the data back saying good to go

#

there could be other commands too, like add phone number once their number is in the system

#

should they change phones or such

#

of course there's always technical support (you)

pine igloo
#

Either way the car has to communicate with a server remotely

#

So either would work, yes

wicked matrix
#

they haven't submitted CircuitPython support for it yet, though.

viscid finch
#

again, have to make sure the board supports SMS and not just LTE

pine igloo
#

Yes

viscid finch
#

if you can find that, I'm sure I/O wouldn't be a problem for a single relay

pine igloo
#

Especially if I can run it through the remote which uses much less power like you said

viscid finch
#

the car would too easily if it has a power switch on the ESC

#

can check on your car(s) and see if there's a power switch

#

if it's tiny and very small leads, that's the one to cut and put a relay in between

pine igloo
#

I’ll check that once I get them in hand. I may message you in the near future if you’re okay with that, and I’ll of course be willing to compensate you for your help if I end up needing it

#

I greatly appreciate your help with this!

viscid finch
#

you're welcome, before you order, definitely check out the SMS compatibility though and maybe get a system rundown. Also, you're probably looking at a some sort of buck converter with low voltage shutoff if you can find it 40v capable down to 5v (if that's what the micro will be using)

#

it's possible the ESC has a regulated output too

pine igloo
#

Yea that’s definitely important. Don’t wanna cause any circuits to fry

tardy gale
pine igloo
mystic sorrel
#

how may samples would i need to take to be able to record and re reproduce a pal/ntsc signal without any data losses?

real scarab
#

2x the largest frequency in the signal

mystic sorrel
#

alright

#

so i'm was looking online and a line period is 64us, is thta correct?

reef junco
#

Does anyone know where I could buy around 15 plastic sg90 servo horns of one shape? I saw the ones available on adafruit.com, but they come in packs of many different shapes.

pine igloo
#

Years ago there were serious hobby shops here and there.

#

They would have had them in the same way that a good bicycle shop has all the little parts and a decent inventory of them.

wise venture
idle geode
reef junco
pine igloo
#

hi

#

Anyone available for guiding me about Motors?

#

i wanna know which type of motors would be good for my handpan robot project

buoyant lintel
#

hi guys, I'm back to doing more inadvisable things with high-powered LEDs! I'm thinking it might be fun to try to adapt the Pixie for the LEDs i'm using, since the schematic is open-source - however, it doesn't look like the actual code that runs on the PIC is available in any of these repos. Anyone know if that's intentional? I might end up rewriting it for a different MC but I'd like to at least get a look at what it's doing. https://github.com/adafruit?q=pixie&type=&language=

Unless the arduino and circuitpython libraries rae what runs on the PIC, but looking at the code in those, it doesn't seem to be

pine igloo
#

Howdy, anyone know a good alternative to the batteries that have the same JST connector for the UK?

buoyant lintel
#

Wait. Nevermind. I don't actually need them to be addressable. I can DIY something simpler

cloud walrus
#

@pine igloo Pimoroni has LiPo batteries with JST connectors. I assume they have the same polarity as Adafruits, but you should verify that before using them. https://shop.pimoroni.com/?q=lipo

viscid finch
#

I can't seem to fix the whine from my Adafruit Voice Bonnet when recording anything, I've set the input levels to be lower for both the right and left volume in Alsamixer to no avail. Someone I've been working with also has the same problem. I'm using the official Raspberry Pi power supply as well and have tested it from my laptop as a power source as well (with everything else disconnected). They might have the same batch as me but I'm not sure if the board has a batch number

#

here is the sound, but turn your speakers down first

proper escarp
reef junco
#

@proper escarp Thank you! I’ll take a look at that!

lime sandal
#

does the M0 just not have enough memory for using the circuitpython displayio library?

keen lichen
lime sandal
#

Yup, gonna have to get something bigger if I want to use my tft.

keen lichen
#

👍

bleak ospreyBOT
karmic obsidian
#

Desk of Ladyada - Cyber Sunday on The Desk of Ladyada https://youtu.be/44UlA9iT_Ts

YouTube
Adafruit Industries
Desk of Ladyada - Cyber Sunday on The Desk of Ladyada

The Great Search with Digi-Key : Cherry MX switches & Hot-Swap sockets
https://www.digikey.com/short/bv29r5qt
Jack into the Matrix with us this Sunday night as we check out these sweet Cyberdeck PCBs we just got in. They're ready for fabrication this week, let's take a look at the silkscreen PaintYourDragon put together. We also respun our QT Py...

▶ Play video
stark thicket
pastel dew
fiery nimbus
#

Hi guys! I am working on a project for a few days and it is similar to the “Rechargeable LED Makeup Compact by Becky Stern ” ( https://learn.adafruit.com/diy-rechargeable-led-makeup-compact ). The only difference is that in my project I want to power the LEDs using a power bank using the micro-USB port which gives 5V. When the battery Is empty, the red LED will turn ON and then I would know that the battery is “dead”, and I’ll have to connect to an external power supply in order to use the LEDs. I also want to mention that I’m looking for the smallest options available being limited by space. Many thanks in advance!

Adafruit Learning System
DIY Rechargeable LED Makeup Compact

Shed some light on your face!

fallen crow
#

Hi everyone, I'm new here and I was hoping to ask a few questions about starting my first project. Is this is right place or should I post noob questions in another #?

cloud walrus
#

@fallen crow #help-with-projects might be a better choice if you have a project in mind. It's not a big deal either way.. Just ask 😉

fallen crow
#

@cloud walrus thanks!

cloud walrus
#

You'r welcome -- Good luck!

lament ocean
#

Anyone would like to investigate with my why body somehow defeats those anti theft sticker?

#

I have one prove it's working, but if I keep it on me the checkout doesn't trigger

noble raft
#

Hey everyone! I am looking for anyone who knows their soldering. Have a quick question pertaining to a broken headset I have and the connection. There is this certain black plastic like paste...I'll just grab a pic. 🙂 Appreciate the help.

stark thicket
#

what's up @noble raft ?

noble raft
#

So that black "paste" in the middle is suppose to connect to the speaker itself somehow.

#

I thought it was gonna be your typical wore solder connection, but this is different. Probably not worth my time, but I thought i would tinker around and save a headset. 😦

stark thicket
#

honestly i'm not quite understanding the issue here...

noble raft
#

I'm just curious what that black paste is in the middle, another type of solder perhaps? or? . I was gonna remove it and see if there was a tiny wire underneath that connects to the speaker itself.

#

Sorry, trying to be as thorough as i can.

noble raft
#

Appreciate the response. Figured it out. Enjoy the day!

keen lichen
stark thicket
#

oh nice

#

for now

shrewd stream
#

can anyone recommend a crimper for goldpins?

bitter gale
#

I would think gold would be softer so any kind should work. Unless someone has some they use that are specifically for that

pine igloo
#

Apple and Android need to combine NFC and Bluetooth so people can just hold their device near a speaker or headphones to pair with it

#

It’s the next logical advancement

#

And it’s just a software thing

wise venture
#

I've been doing that with some of my BT headphone and Android for some time now

#

I had JBLs that paired correctly, as well as Bose earbuds. I want to say there was another, but can't recall what it was

pine igloo
#

what hardware did you use?

#

specifically

wise venture
#

For phone, Google Pixel v1 (original "small" edition), and Pixel 4a 5g

#

The JBLs I can't find a model, but the earbuds were Bose Soundsport

#

Oh, the other was the Cowin E7

#

And I suspect the newer Cowin models, like the E7 pro and E8 support it as well

pine igloo
#

I meant how did you incorporate that functionality? Did you have to modify the hardware or did you somehow reprogram the microcontroller?

wise venture
#

Oh, I think I misunderstood your original premise. The NFC was built into the device, so when a phone scanned the NFC, the device would go into pairing mode, and the phone new what device to search for and pair with.

pine igloo
#

ahh okay so it was built in. I thought you built that functionality in

ionic aurora
#

i just got to the section on the nyquist stability criterion in my signals & systems textbook. my mind exploded a bit

pine igloo
#

So if a switch is placed anywhere in the circuit, the battery won’t drain no matter what, right? Like if you placed the switch in front of an ESC, it won’t just disable the ESC while still draining the battery, yea?

wise venture
#

Really good video by DroneBot Workshop about getting started with the RasPi Pico and CP
https://www.youtube.com/watch?v=07vG-_CcDG0

YouTube
DroneBot Workshop
CircuitPython with Raspberry Pi Pico - Getting Started

Build a Keyboard and Mouse Emulator, make a rainbow with RGB LEDs, and work with a microSD card - all with CircuitPython on a Raspberry Pi Pico!

Article with diagrams and code: http://bit.ly/picocp
More articles and tutorials: https://dronebotworkshop.com
Join the conversation on the forum: https://forum.dronebotworkshop.com
Subscribe to the ne...

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worldly moon
#

Quick question, what would be the best sensor to detect if water has reached a certain point?

#

I was thinking a light sensor but I'm not sure if the light would change if it came into contact with water

#

Also it would probably break

barren plaza
#

so you know it's at least not BAD

stark thicket
#

yeah

worldly moon
#

Looks like exactly what I need

#

Thank you

stark thicket
#

or are you just looking to know if it's above a certain point? you could even just put two wires there and see if they conduct

barren plaza
#

np

stark thicket
worldly moon
#

I could even do it with a camera tbh

stark thicket
#

see my link too

worldly moon
#

That looks a little overkill

#

I think lew's is a better option

#

Thanks for the recommendation though

stark thicket
#

yeah no worries

#

glad one of us could help

bitter gale
#

i mean if you have a ground wire in the water and a powered one to make go low to sense the water you could easily do it with 2 wires... i used to located lines and when i couldnt find a place to push one into the dirt i could find a puddle and throw it in that and locate stuff just fine

vapid wedge
#

so, what is circuit python?

#

blah

#

I can google that

#

do people use circuitpython for "serious" project?

pine igloo
#

The source code is on GitHub.

cold pebble
fluid musk
#

good day folks

#

Hey guys, i am watching this video from youtube about Easy Snap fit cases. from 3 years back. but when i hit the part for setting the Offset inwards via Shell+gap it won't work for me. whenever i try it it just set the offset on the outside instead of inwards, what am i doing wrong?

topaz otter
#

Hi!
I humbly ask how can I make this product work in arduino boards. Thank you very much

Screenshot_2021-03-09_182926.png
real scarab
#

What is it?

topaz otter
#

capacitive fingerprint sensor from adrafruit

real scarab
pine igloo
#

oops sorry

#

didn't realize it was the same thing

real scarab
#

😄

topaz otter
#

unfortunately, the technical description and pin diagram doesn't match

#

to the product

cloud walrus
#

The pinouts are described on the product page ```Use this pin-out to connect to your microcontroller, and then use our library to interface over UART pins. Please note this sensor uses 115200 baud rather than the 'standard' 57600 used by many other sensors, so you'll need to update the examples to 115200 baud for the sensor to respond.

Black to GND
Yellow to Microcontroller TX (data out from microcontroller)
Green to Microcontroller RX (data in from microcontroller)
Red to 3.3V VIN
White to IRQ (can leave disconnected)
Blue to 3.3V VCC (can leave disconnected)

#

Just using Red,black,yellow,Green -- it works with my Raspberry Pi.

icy moth
#

Any recommendations for affordable spectrum analyzers?

#

I’m seeing some handheld portable ones that are ~$400 and do up to 6GHz which is ideal

amber ginkgo
pine igloo
#

@cloud walrus I thought you were reciting the lyrics to the Kid Power saturday morning show's opening theme I remember from decades ago. ;)

worldly moon
#

hello guys where can i buy the neural signal interceptor and injector from adabox 018?

#

i want to try some of that mind control stuff

#

i think it works with circuitpy as well

#

nvm i found it

wise venture
#

I think Adabox018 is the one coming in April, isn't it?

#

Which interceptor? Now I'm curious!

worldly moon
#

im just kidding dw

#

although Adafruit if you ever do stock up on brain signal interceptors you should definitely add them to adabox

bleak ospreyBOT
calm snow
fierce trench
#

Anyone ever install an ips v2 mod on a gameboy advance sp? My old man eyes don’t do great with the ags-100

hot snow
#

Is 37v through a 1/4w resistor too high?
Trying to fault find with a broken amplifier I am learning on
I'm more into building than fixing, wanna learn how to trouble shoot
So yeah, 37v across a 1/4w 330hm resistor, sound fishy?

upper coyote
#

Yes, 37 volts across a 33 ohm resistor, is way over 1/4 Watt, might even produce a small fireball.

mystic sorrel
#

The one thing you never want to see when opening a motor is to find carbon every where after very little use . . .

topaz otter
main hemlock
wise venture
main hemlock
#

these coupons tend to create a bit a of a run on the store. If you don't see what you want this week, you can keep checking for new coupons and new items. The mix changes all the time.

#

also check the "Clearance" items, which are no-coupon

wise venture
#

I'm seeing that. Feels like the options are changing every refresh! But will certainly keep an eye out. It's not the latest top-o-da-line fresh from teh factory stuff, but that's also not what I need, so this is perfect!@

pine igloo
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@hot snow 

  I = E / R
  I = 37 / 330
  I = 0.112 Amperes
  P = E * I
  P = 37 * 0.112
  P = 4.148 Watts
# 
I  is  Current in Amperes
E  is  Voltage in Volts
R  is  Resistance in Ohms
P  is  Power in Watts
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So a 10 Watt 330 Ohm power resistor is called for there. Possibly in a square ceramic form.

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Says wirewound.

clever nexus
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Also:
P = E^2/R

bleak ospreyBOT
hot snow
#

So yes I certainly should not be seeing 37v across the resistor

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The 330omh 1/4w was there by design by the company

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I have discovered that the amplifier is meant to be running on 24v as is silk screened onto the board

#

But out of the rectifier I am getting 37v

#

The rectifier goes through a trace and leads to what is either a big resistor or is an axial inductor

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The inductor/resistor then goes straight to the power capacitors that get charged to 37v, and then that connects to the "24v" line

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This is a photo of the resistor/axial inductor

pine igloo
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That's Ohm's Law. ;)

hot snow
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If it's an inductor, this is it's specs according to the colour code

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And that's the resistance if it's a resistor vvvv

pine igloo
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;) lol

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What year was this equipment built?

hot snow
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I am currently reading 000.4 ohm from my multimeter

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1980's?

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1985

pine igloo
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Are you guessing?

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How do you know what the expected voltage is?

hot snow
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I knew it was 80 something haha, it's 85

#

Look at the bottoms of the photos

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+24v and -24v

pine igloo
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What is the trouble with the unit?

hot snow
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Yet 37v comes out of the rectifier, goes straight into the resistor/axial inductor as photographed above, then goes straight into the smoothing caps and into the "+24v" line

#

One of the power transistors failed

But even with all of the power transistors removed , four zeners and four resistors get very very hot

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Hot enough for them to have originally popped

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It seems to be getting fed 37v instead of 24

pine igloo
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I usually like to use more than one reference when I don't know what's going on, so a different VOM for example I would reach for one of my other meters to confirm.

hot snow
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I've only got one meter unfortunately but I do trust it to be reading correctly

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Checking the voltage out of my lab power supply, the multimeter matches so we are all good

pine igloo
#

The problem with circuit boards is in isolating circuit blocks effectively.

#

Old school, you could (if it was worth the trouble) disconnect the load and just get the power supply going perfectly, before worrying about the amplifier section.

hot snow
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The load isn't connected

pine igloo
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Hot zeners sounds power supply-ish to me.

hot snow
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The power transistors are completely removed

pine igloo
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Yeah that might be enough. ;)

hot snow
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I'm bloody hope hahaha

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That looks like a resistor no?

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Axial inductors are usually bulbous

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And it's large, 17.5mm and 5mm across

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If it's a resistor it should read 0.47 ohms on my multimeter according to the colour bands

Instead it reads 000.4

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That is the first thing that the power in goes through

Transformer > rectifier > that resistor/inductor > capacitors > +24v line

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So resistor or inductor, I am certain that it is responsible for regulating the power in for the rest of the amplifier

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As it goes between the rectifier and the capacitors

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I don't know who to believe, my multi meter reads 000.4, my LCR reads 0.84ohms

pine igloo
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;)

#

If you don't have a good theory of operation how are you going to diagnose it

static stream
spare belfry
#

Anyone know of an adapter that actually follows the ACA standard?

spare belfry
#

From wikipedia: "Portable devices having a USB On-The-Go port may want to charge and access USB peripheral at the same time, but having only a single port (both due to On-The-Go and space requirement) prevents this. Accessory charging adapters (ACA) are devices that provide portable charging power to an On-The-Go connection between host and peripheral."

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the highlighted numbers on that page indicate that for ACA to work, you must have a 126k resistor across ID and GND

tired cosmos
#

does anyone have any knowledge on adapter making? specifically for the macintosh 512k

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I don't really feel like spending $100 to setup for the tinkerboy adapters for the mac 512k to use modern keyboards and mouses on it(and the original keyboards and mouses would set me back like $600 to get both)

pine igloo
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@tired cosmos Different keyboard entirely, I think.

#

If you don't own an OEM keyboard or clone it's a big project to create one.

tired cosmos
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..how expensive are the clones then?

pine igloo
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Collectors don't want to part with them for very little.

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It's an opportunity thing.

tired cosmos
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dang..

pine igloo
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I've had two of those Macs but they're long gone. ;)

#

(They were working when I did whatever I did with them)

tired cosmos
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I saw one guy that managed to do it for a mac plus, with the keyboard.. translating the rj45 keyboard to USB with an arduino

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dunno about the mouse

pine igloo
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If you're a bit more flexible you may find a clone that runs similar software.

#

If you find plans you believe, that's one thing. ;)

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Keyboards run firmware.

tired cosmos
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I dunno if I'd ever be able to find the firmware for that keyboard and mouse..

pine igloo
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Why put all this effort in .. what part of the system do you want working and what part are you flexible about?

tired cosmos
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Basically I have the mac itself

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but none of the peripherals