I think at least in the US we're going to have to see average broadband speeds go up and see wider adoption of faster wifi before 8K streaming content makes sense.
#general-chat
gritty galleon
rapid geode
its barely fast enough for HD right now haha.
gritty galleon
unfortunately yup
rapid geode
its also horrible on the production side. an 8K render is over 1gb per frame
times many passes.
could easily be severa tb for a few iterations of a single 15 second shot.
shudder
haha
a lot of shows are still HD though.
raw jasper
could easily be severa tb for a few iterations of a single 15 second shot.
I bet the storage systems for these have lots of blinkenlights
tranquil swallow
What if you criminalized copper lines like heroin and forced fiber everywhere
rapid geode
haha
tranquil swallow
Call it the war on slow internet
raw jasper
copper can be fairly fast
rapid geode
outside large cities it is a really big endeavour to run ANYTHING
you really need govt initiatives and money to force it.
tranquil swallow
I think I have the slow copper
rapid geode
err. im trying to type canada has slow internet and the censorbot is blocking it
haah
conspiracy!
rapid geode
alexander graham bell
that weirdo
although today it is owned by the ontario teachers pension fund. which is hilarious.
teachers demand the govt provide students better internet while simultanously overcvharging for said internet
raw jasper
although today it is owned by the ontario teachers pension fund. which is hilari...
Funny thing, the Ontario teachers' pension fund also owns FLEXnet
rapid geode
they used to own alias (maya) and many other weird things.
they are arctually a really smart invesment group
but there is a little bit of conflict in them owning bell to me
raw jasper
(Looks like they actually sold flexera again in 2020, so I'm wrong)
rapid geode
look at them chips fly
its making fixtures to hold the keycaps
should be done in a few hours.
(the actually cutting program there is only 20 mins)
one side holds 8 stems to be trimmed to correct height. and the other holds the caps to mill the top surfaces and do engraving.
rapid geode
read the line above 😛
night crescent
It's 10pm. Do you know where your engineers are? We're doing some ESP32-S3 Linux builds... 🔧💻🎉 https://youtu.be/ng1on8prlYo
half plank
Is a dent like this in a lithium ion battery ok?
crystal ore
Is a dent like this in a lithium ion battery ok?
Personally I wouldn't be too worried about that. The outer metallic pouch is shrink-wrapped around the lithium cell itself, no that might be more of a "wrinkle" in how the wrapping shrunk than a "dent".
rapid geode
yeah, they arent "smooth". unless you eactually dented it yourself...
rapid geode
yay
half plank
yeah, they arent "smooth". unless you eactually dented it yourself...
I was putting it in a 3d print and it got “dented” is that still ok
rapid geode
hmm
its sorta hard to know. generally, if its been crushed or impacted hard, it is bad. but they are somewhat malleable to handle normally which is ok.
tranquil swallow
As long as you store it in a tub of sand you should be safe
rapid geode
i assume he wants to store it in the device while running 😛
tardy badger
Thinking about getting a window sticker for my car that says “Responds Well To Turn Signals”
Mostly because people try to merge into my car a lot, typically not using any kind of turn signal
rapid geode
haha
i wanted to post a sign outside my old condo "red lights: not just a suggestion!"
tardy badger
I nearly got hit this last week
A light near my house has two right hand turn lanes, I was in the one that turns to the inside lane, some lady decided she wasn’t going to turn into her lane but into my lane
tranquil swallow
Which brand of SUV was she driving? Audi?
tardy badger
Had to slam on the brakes to not get hit
She was driving a Nissan suv
Not even that nice
Anyway, first time I’ve had to use the horn on my car
tranquil swallow
Imagine what collisions will look like once everyone's driving electric SUVs and trucks
rapid geode
exactly the same?
half plank
As long as you store it in a tub of sand you should be safe
I don’t have a bucket of sand just sitting around though
half plank
i assume he wants to store it in the device while running 😛
Yes I do, but I want to be safe first
half plank
Is a dent like this in a lithium ion battery ok?
When I was putting it in the shell my finger nail pushed into the side.
rapid geode
ahh, thats nothing
just a bit of squish
if you stuck it in a vise and hit it with a hammer... then
ok, sleepy time. haha
(they arent glued, just snapped in, thats why they are crooked
crisp oracle
does tossing years of code because your data source goes offline counts as an achievement?
tardy badger
Absolutely
I had a two year project go bunk because a website decided to make their website junk to parse through to force people to use their API 😛
fair summit
I have seen a LiPo fire after someone punctured it while closing a case it was in. It started smoking immediately and then burst into flames. I beat the fire out temporarily with some textiles (only thing handy), and then we scooted it out an outside door with a dustpan. It melted the vinyl tile on the floor. Moral: be careful with these.
crisp oracle
I have seen a LiPo fire after someone punctured it while closing a case it was i...
you don't know the half of it...
battery fire drill is a PITA where I work
half plank
I have seen a LiPo fire after someone punctured it while closing a case it was i...
Ok I will keep that in mind.
rapid geode
i deliberately set a laptop lipo battery on fire (in a bucket outside) and it took a surprising amount of hitting with a hammer/crobar.
not suggesting they are "safe", just that it is seems kinda "random" what will set them off
glued. one with CA, one with a special plastic glue. not to program the tops!!!!
what should i engrave on them. i was thinking a cat, but maybe i should make each one different (these will wind up being my show/sample keys)
raw jasper
The lighting is chef's kiss
rapid geode
real cinema graded lights are awesome, haha. i bought them a year ago and kinda wondered if it was a pointless purchase, but its useful now! hahaha
raw jasper
You could also open the ultimate food instagram :P
rapid geode
haha
thats why i bought them, to make some cooking recipe videos. but every time i cook im hungry and just wan tto eat that food, not film it
hahaha
south light
not suggesting they are "safe", just that it is seems kinda "random" what will s...
My patented technique for destroying a single cell at a time (it is how I have disposed of a few cells in past) has been connect them in parallel with a car battery
rapid geode
oh
south light
But also lets me remote activate it rather than having to be in hammer swinging distance
rapid geode
my question is always, how do you know when they become inert and safe after destruction?
south light
Once they stop burning
late fulcrum
real cinema graded lights are awesome, haha. i bought them a year ago and kinda ...
Which light is that?
tardy badger
Testing fit for the Bluetooth add on for my rp2040 watch
rapid geode
mine never really burn with flames, just smoke out
south light
Once the thing is just a pile of charred remains, it's pretty done
rapid geode
Which light is that?
uh... "simorr". was form smallrig (got it with my RP rig
south light
In general though, lipo fires are hard to extinguish so if you get one to ignite rather than just offgas, best to just move it somewhere it can burn up safely
late fulcrum
That's true of metal fires in general
south light
Even the sand trick tends to be a pause button rather than a stop button
Very useful as it lets you at least move the battery to a safe location or make the area safe in its existing one
But major risk of it catching fire again once unburied
rapid geode
cnc machine fires are fun. ive seen a few videos. usually titanium milling.
late fulcrum
Yeah, the ability to buy yourself a little time is valuable in such situations
rapid geode
i set one of my machines on fire but that was with wood, so just poured some water on it and it was fine (melted a few wires)
rapid geode
uh... "simorr". was form smallrig (got it with my RP rig
haha, i just got a smallrig spam email. it's like they are watching
late fulcrum
Wood ... machine?
south light
In general most of my battery powered projects are now LFP
Which doesn't tend to be so burny
rapid geode
cnc machining a wood (mdf actually) bronze casting pattern. the bit was rubbing, and after some hours of cutting. whooof.. flames.
just for a few seconds
raw jasper
uh... "simorr". was form smallrig (got it with my RP rig
simorr sounds like something from IKEA
raw jasper
Though they'd probably call it LÄMP or something :P
rapid geode
apple would call it the new retina cinema photon emitter
oh, and revolutionary!
with graphs about how it is 30% more
(more what, we dont know)
raw jasper
more than a 1800s incandescent lamp
rapid geode
raw jasper
IIRC they are still comparing their M* macs with their intel equivalents even though there have been at least 2 generations of ARM machines at this point
VIDEO CONFERENCE
ha
raw jasper
Most of the time I don't have enough bandwidth to transmit my desktop + voice + camera feed
Which of those is totally irrelevant and gonna go?
rapid geode
but to be fair, streamers, conferences etc are actually lit and shot really pro these days
raw jasper
||It's the camera feed||
raw jasper
but to be fair, streamers, conferences etc are actually lit and shot really pro ...
I thought it was Bad English for "Video Conferencing"
aka the Company Zoom Meeting
(or Teams, or WebEx, or whatever. Pick your poison)
rapid geode
perfectly fine english
raw jasper
On the other hand, if you're running an actual conference, I hope you have the budget for a better "more pro" lightbox than this :P
rapid geode
haha
video conferencing is the act of " having a video conference"
anyhow. need some engraving ideas. they will all be a powder blue colour. (only mixing one epoxy batch).
rapid geode
uh, that wont fit on a tiny keycap 😛
raw jasper
I mean, you could take the wave pattern and shrink it
raw jasper
anyhow. need some engraving ideas. they will all be a powder blue colour. (only ...
why not make custom batches with an SVG the customer sends you for extra $$?
rapid geode
i need to machine these 8 keys today. now. this minute. as samples.
raw jasper
Forgive my bikeshedding, I was just mentioning it as a future option
rapid geode
hehe
tranquil swallow
I wonder what they'll do about the m1 macs once their ssds start failing, you can't get third party flash right now
solar kindle
anyhow. need some engraving ideas. they will all be a powder blue colour. (only ...
skull and crossbones (can be mapped to hard reboot), mushroom cloud (ditto)
glacial wigeon
I wonder what they'll do about the m1 macs once their ssds start failing, you ca...
louis rossman mentioned, if you buy a user-upgradable ssd for one of the other models, its the same custom flash chip
apple has custom ssd's, that look like nvme, but its just raw NAND over the same connector, no controller
raw jasper
So, the solution is to pay $???k to get... a spare part?
glacial wigeon
yeah, buy over-priced flash chips, hot-air them off, reball, and then hot-air them onto the motherboard
and then re-flash the missing bios
glad ruin
Mini-rant: why would Samsung of all SSD manufacturers default to listing a 512 byte logical and physical sector size in their NVMe SSDs? I have a hard time believing that they are aligning to that internally. The most annoying part is that they don't actually list a block, page, or atomic write size anywhere in their datasheet. Also I wasn't able to update the firmware using their ISO image, so at first I thought the drive was a counterfeit. But no, it's genuine as far as I can tell. I looked up the serial number on it. I've manually overridden all of my partitions to use 4KiB blocks, but seriously why are any vendors still reporting—let alone defaulting to—512 byte sectors?
raw jasper
yeah, buy over-priced flash chips, hot-air them off, reball, and then hot-air th...
... and then the device eventually refuses to boot after a firmware update because the flash chip is not bound somehow
glacial wigeon
Mini-rant: why would *Samsung* of all SSD manufacturers default to listing a 512...
the pi4 firmware lacks support for 4k sectors
so its unable to boot from a 4k sectored usb drive
raw jasper
Does the concept of "sector size" make sense in non-spinning rust-based storage?
rapid geode
skull and crossbones (can be mapped to hard reboot), mushroom cloud (ditto)
i have the dead face emoji one. skull im not sure works in powder blue for a sample, but the idea is good ill have to look up traditional flags and see what can work. muchroom cloud im not sure i can do a one colour engraving that is "readable" as an a bomb.
glad ruin
Does the concept of "sector size" make sense in non-spinning rust-based storage?
There is a concept of "atomic block" or "page size", i.e. the minimum amount of space that can be erased in a single operation. From what I've read this can be anywhere from 4k to 16k or more, but most manufacturers don't list it. I highly doubt any of them actually use 512B internally though.
olive dome
Mini-rant: why would *Samsung* of all SSD manufacturers default to listing a 512...
well legacy support
glad ruin
Waaaaaah legacy support... these are NVMe drives we're talking about. Nothing legacy supports them.
olive dome
Also SSDs are way more complex then HDDs, those page and sector doesn't describe the behavior either
raw jasper
If it exists somebody will try to boot MS-DOS off of it :D
There probably is some cursed firmware stuff that will still emulate an IDE harddrive out of them
glad ruin
Windows support might be a more accurate answer. Apparently windows doesn't like 4k sectors for some reason(?)
raw jasper
*Windows* support might be a more accurate answer. Apparently windows doesn't li...
Windows is...... strange. Again.
glacial wigeon
If it exists somebody will try to boot MS-DOS off of it :D
there was one user i helped, that wanted to boot a pi4 from a usb drive, with 4k sectors
he found a vendor util, to re-format the drive for "win xp compatability", which just enabled 512 emulation
raw jasper
This is your brain on multi-decade backwards compatibility ;>
glad ruin
enterprise NVMe will have those bells and whistles BTY
Yeah that's what I've been reading/setting up.
glacial wigeon
but ive also had usb<->sata adapters lie in the other direction
a 4tb sata drive, that i had been using in 512 mode for years
when connected to the usb adapter, suddenly claimed to have 4k sectors
so the mbr offsets where all wrong, and the fs couldnt be found
glad ruin
What I don't understand is why Samsung defaults to the emulation mode.
olive dome
If it exists somebody will try to boot MS-DOS off of it :D
To be honest, this is how some low level FW update tool works, they use DOS with 16bit real mode I think
glacial wigeon
To be honest, this is how some low level FW update tool works, they use DOS with...
ive heard that some of those tools are switching to .efi binaries
olive dome
Yeap but slowly
glad ruin
ive heard that some of those tools are switching to `.efi` binaries
I think pretty much all of them have at this point.
olive dome
Like all the legacy stuff
raw jasper
To be honest, this is how some low level FW update tool works, they use DOS with...
I booted one that started PC-DOS the other month. It was fun figuring out how to get it on an USB flash drive
glacial wigeon
i still have my original dos install floppies
but finding a motherboard with floppy support will be troublesome, lol
glacial wigeon
raw jasper
What is floppies? /s
It's a 3D-printed save icon
olive dome
What I don't understand is why Samsung defaults to the emulation mode.
Because otherwise the consumer will return the drive even though it is fine
glad ruin
Yeah but at the very least they should list something in the datasheet.
raw jasper
To be fair, floppies didn't exactly die. They just went extinct
glad ruin
We have vending machines with them at work.
raw jasper
You guys get a datasheet?
glacial wigeon
Because otherwise the consumer will return the drive even though it is fine
same problem exists with usb hubs
a bus powered hub, is supposed to declare itself as such
and then the pc wont enable devices that need over 100mA
and then "oh no, my hub doesnt work, i better return it"
raw jasper
We have vending machines with them at work.
Nobody bolted a gotek on them yet?
glad ruin
olive dome
Exactly, though SSDs are much expensive then Hubs : D
raw jasper
same problem exists with usb hubs
a bus powered hub, is supposed to declare its...
I think most mobos go out of spec and provide moar current anyway
glacial wigeon
What is floppies? /s
raw jasper
I dread for the day somebody is gonna ask me that 😂
olive dome
Yeah but at the very least they should list something in the datasheet.
For Consumer drives maybe not
glad ruin
Yeah I know.
glacial wigeon
semi related, i had a pair of sata ssd's in mirror configuration on my old desktop, it locked up constantly
olive dome
970EVO is fine, the issue is on 980
raw jasper
nvm, it's not this one
https://www.pugetsystems.com/support/guides/critical-samsung-ssd-firmware-update/
glacial wigeon
after several years like that, i found the cause
a firmware bug in the ssd, causes the controller to just hang
glad ruin
There is a FW update available, but their updater can't find the drive.
glacial wigeon
a windows util was supplied to update the firmware, it just failed with "error"
glad ruin
I'm half tempted to install windows on it just so I can try to update it at this point 😭
glacial wigeon
my desktop is/was setup for dual-boot
but i havent booted windows since the cpu/mobo swap
no idea how upset windows is going to be when i do bring it back from the dead, lol
raw jasper
slmgr is probably going to yell at you
glad ruin
This is a brand new drive. Bought it a couple weeks ago.
glad ruin
$50 so yeah
raw jasper
:(
tardy badger
Dang, flex PCB are tough to work with
It’s rough looking but no apparent solder bridges from continuity testing
Hindsight: I should have used hatched ground plane
olive dome
I guess you are using OSHPark?
I found that for some reason JLCPCBs flex is much flexible then OSHPark
tardy badger
Yeah
Given the size, cheapest flex I could buy
Otherwise the quality is really nice
olive dome
I have some temperature and humidity sensor extender flex board and for some reason the one I get from JLCPCB is softer
tardy badger
Probably a different material on the inside layers with JLC
raw jasper
Dang, flex PCB are tough to work with
flex... PCB?
Is it a flex ribbon with a flexible PCB on?
glacial wigeon
raw jasper
https://www.youtube.com/watch?v=p-ATWaAyJ9I
I see your PCB frog robot and raise you a frog skin cell robot
https://www.youtube.com/watch?v=C1eg-jgLx5o
glacial wigeon
neat
tardy badger
flex... PCB?
Yup
Charging my watch after long being dormant due to needing firmware updates
fossil dawn
Great! I wonder if the cat would look better if it was alligned to the bottom, looks kinda floating imho 🤔 Or bongo cat 😆
tardy badger
Cats float
rapid geode
i treid a few alignments. this works best being so small. inverted like the ESC actually works nice too
tardy badger
Perfectly valid position
rapid geode
these are corian so they will glow a little from the rgb (i think!). so the invert should be interestting
padauk versions
esc doesnt work i dont think. the others do
I think ill leave the 4th one plain actually.
there
raw jasper
Charging my watch after long being dormant due to needing firmware updates
With so many PCBs and components, this (probably) isn't a good watch to take to the airport
raw jasper
you missed the opportunity to make an "any" key :>
rapid geode
ooooh, yes. i thought of that but forgot haha
ill do fail on the corian and any on the padauk
tardy badger
With so many PCBs and components, this (probably) isn't a good watch to take to ...
How so?
Most smart watches are multitudes more complex
raw jasper
How so?
You folks don't get your electronics x-ray inspected before a flight?
(genuine question)
tardy badger
They ride in a bin with our other electronics
raw jasper
And obviously most smart watches are multitudes more complex, but they also do look "professionally made" (single PCB, little to no wires, etc)
tardy badger
A screen, PCB, charging coil, and 3D printed case
raw jasper
Ah, it's a single PCB?
tardy badger
Yeah, you can add small accessories like an accelerometer via a small flex but that’s innocuous
raw jasper
World's first FPGA watch :P
tardy badger
RP2040 actually lol
raw jasper
(re: accelerator)
raw jasper
@late fulcrum Heh, Hello Kitty Island Adventure has actually been released now
https://apps.apple.com/us/app/hello-kitty-island-adventure/id1553505132
tardy badger
<@348911944486486016> Heh, Hello Kitty Island Adventure has actually been releas...
Hilariously, this was discussed a few weeks ago 😅
raw jasper
Hilariously, this was discussed a few weeks ago 😅
Yeah, but it has actually been released now!
tardy badger
it's been out for a few weeks
raw jasper
Do they really go up to 110MHz? :>
tardy badger
🤷
`default_nettype none
module timing(input clk, logical, output timedLogic, await);
localparam sendonecnt = 2;
localparam sendzerocnt = 1;
reg [2:0] clkcnt;
initial begin
clkcnt = 0;
end
always @(posedge clk) begin
if (logical == 1) begin
await <= 1;
if (clkcnt < sendonecnt + 1) begin
timedLogic <= 1;
clkcnt <= clkcnt + 1;
end else begin
timedLogic <= 0;
clkcnt <= 0;
await <= 0;
end
end else if (logical == 0) begin
await <= 1;
if (clkcnt < sendonecnt + 1) begin
timedLogic <= 0;
clkcnt <= clkcnt + 1;
end else begin
timedLogic <= 1;
clkcnt <= 0;
await <= 0;
end
end
end
endmodule```all this... just to get the timing right.
I want to drive neopixels with an FPGA, I figured timing was the first thing I should do
raw jasper
wait, how isn't your synthesis tool freaking out with you setting non-reg outputs from a clocked always block?
tardy badger
?
because they're wires on the top level
😛
`default_nettype none
`timescale 10ns
`include "timing.v"
module top(input P9, P10, P11, P12, P13, output P6, LED_R, LED_G, LED_B);
wire clk;
reg logical;
reg await;
reg timedLogic;
reg [31:0] GB_out;
reg [23:0] color;
assign LED_R = logical;
assign LED_G = GB_out[14];
assign LED_B = GB_out[15];
assign P6 = timedLogic;
SB_LFOSC SB_LFOSC_inst(
.CLKLFEN(1),
.CLKLFPU(1),
.CLKLF(clk)
);
timing timing(.clk(clk), .logical(logical), .timedLogic(timedLogic), .await(await));
initial begin
logical = 0;
GB_out = 2'b00;
color = 24'hFF00AF;
end
integer i = 0;
always @ (posedge clk)
begin
if (await == 0) begin
logical <= color[i];
end
else begin
GB_out <= GB_out + 1;
end
i <= i + 1;
end
endmodule```I take that back, I changed them to registers
raw jasper
Yeah, as far as I know, procedural assignments to wires aren't legal in verilog
I was very surprised that it worked 😅
tardy badger
it'll let you do that, it just won't wire anything up lol
yosys essentially ignores them
raw jasper
Anyway, you probably already know this, but passing your modules through verilator --lint-only helps catch these kinds of things
verilator is a very good linter
tardy badger
indeed it is
luckily this timing and color output example only took me about an hour to through together
I feel like i'm getting much better at this stuff
raw jasper
(Also, I prefer just specifying all modules to read_verilog instead of using ``include`s)
tardy badger
why?
raw jasper
IDK. Style thing
Helps me maintain a healthy level of separation between programming mode and HDL mode in my brain
tardy badger
it all really does the same thing under the hood
raw jasper
it all really does the same thing under the hood
I know!
Which is why I said it's a style thing :D
raw jasper
And then you feed your top module how?
tardy badger
in a makefile?
build:
yosys -p "synth_ice40 -top top -json $(filename).json" $(filename).v
nextpnr-ice40 --u4k --json $(filename).json --pcf $(pcf_file) --asc $(filename).asc
icepack $(filename).asc $(filename).bin```I like simplifying my build process as much as possible 🙂
raw jasper
Makes sense :)
I usually use yosys when I want to interrogate some specific aspect of my design
Not to actually build a bitstream
tardy badger
makes sense
raw jasper
So, I typically read_verilog my design in, and then run yosys commands on it
tardy badger
I just cross my fingers and build
not the greatest way to find issues but it works for the smol files I'm working with
I just need to write a simulation test bench for this to verify everything looks good.
glancing at an oscilloscope only gives me a small view into that.
raw jasper
You can also look into doing something with symbiyosys to formally prove your module
The subset of SVA you'll probably need is small enough that the free version should be able to handle it
tardy badger
I can also use edaplayground or put it in icecube2 and run modelsim on it
since icecube2 comes with a lattice semi specific version of modelsim
raw jasper
You were able to run it?
tardy badger
turns out it's a bug that cause the window issues
minimizing and then right clicking to click "Maximize" fixed it
raw jasper
lol :P
tardy badger
yeah, a bizarre bug
raw jasper
not the greatest way to find issues but it works for the smol files I'm working ...
btw check out https://blog.yosyshq.com/ if you haven't already for some neat things you can do with yosys
ebon dew
minimizing and then right clicking to click "Maximize" fixed it
naturally because isn't that what everyone does? lol. if it works it works.
tender heron
Hello
tardy badger
hola
night crescent
The Desk of Ladyada - Complex kernel compiles? Docker it up! 💻 🐳 🔌 & The Great Search - 2x5 0.05" JTAG / SWD connector and cable https://youtu.be/f6ZhVPpiNzM
tardy badger
Midnight snacking cherry tomato
gritty galleon
Midnight snacking cherry tomato
The best kind. Yum!
worthy magnet
TIL that putting TXB0108 an PD/PU doesn't work well
tranquil swallow
It's impossible for me to find 12mm chopped carbon fiber
dusk tusk
Hello, good morning guys
hasty wedge
well
I thought Pi Pico's 4USD price is cheap enough and can prevent it from being cloned
Just saw a super realistic counterfeit Pico with Pi's logo and copyright 2020 text on Taobao
For 2-ish USD!
I clearly underestimated China's cloning industry
The seller clearly marked and labelled that its a clone tho
raw jasper
The seller clearly marked and labelled that its a clone tho
Looks like the raspberry pi foundation has some goodwill even with the Chinese cloning industry 😅
Do you think they have a counterfeit rp2040 die?
hasty wedge
probably not
but even if it does have one I will not be surprised
curious how they will clone the PIO part
raw jasper
On the one hand, I am not really into rewarding cloners. On the other hand, I'd be curious
raw jasper
That is.... not unexpected of you :P
hasty wedge
60 sec speech or 4 voices MIDI synthesis
and they are OTP parts
Interestingly enough they are actually EPROM parts
but since they are packaged in non-crystal packages
they are non-erasable
raw jasper
Funnily enough, I came across a weird micro today
https://www.quicklogic.com/products/soc/eos-s3-microcontroller/
(also linked it over at #fpga , but, oh well)
It's like a very budget Xilinx Zynq
hasty wedge
I am wondering what is the price difference between a true e-fuse based PROM and EPROM
I know Padauk MCUs are real e-fuse PROMs
the programmer also generates the VPP for the chip (both Padauk and Nyquest), which further decreases the cost per die
raw jasper
Ah yes, CD sound 🙃
hasty wedge
In Nyquest Smart Programmer it uses a NXP LPC controller and a super complex power board with loads of chip and inductors
that power board is definetely for the VPP generation
raw jasper
Yeeeah, makes sense
hasty wedge
I know Padauk is +15V
raw jasper
FreePDK sounds like something you'd use to design an ASIC, not write a MCU program
hasty wedge
also, I got shocked once by the VPP inductor on FreePDK's programmer
hasty wedge
FreePDK sounds like something you'd use to design an ASIC, not write a MCU progr...
"Free Padauk"
raw jasper
If only they'd add 2+2 and connect the speech synthesis with the MIDI part
El cheapo "vocaloid"
hasty wedge
nah
if a Taiwanese chip maker said "speech synthesis" in a sound chip they probably means PCM playback
which is the case here
raw jasper
lol, I thought 語音 was "speech synthesis" hah
hasty wedge
yeah
语音合成 = PCM playback
in these Taiwanese chipmaker's eyes
sorry to disappoint you lol
raw jasper
How cursed is the assembly?
hasty wedge
here's the manual
there are only two status flags
Carry and Zero
yeah... they are still using the "speech synthesis" term in their English UM
raw jasper
Creator: Acrobat PDFMaker 20 Word 版
Looks like they're making their datasheets in Word
The clock generator is a Ring oscillator
🙀
raw jasper
It looks good enough to write some code like "if button A is pressed, play sample A"
hasty wedge
don't think about using it as a clock
yeah
there's even a dedicated "PLAY" instruction
raw jasper
Remember to turn off the audio output before entering to the slow mode.
I imagine it keeps generaaaaaaaaaaaaattttttttiiiiiiiiiiinnnnnnnnnnngggggg auauuuuuuuuddddiiiiioooo
raw jasper
Problem is, with each experiment, you burn one (1) speech IC
hasty wedge
nah, I have the FDB board
raw jasper
(Oh no, the terminology is infectious)
hasty wedge
which is basically an OTP part but with an external parallel NOR flash
and programmed with the dedicated FDB programmer
hasty wedge
(Oh no, the terminology is infectious)
Flash Demo Board
so you don't have to sacrifice OTP parts for exprimentations
raw jasper
Flash Demo Board
Oh no, I was referring to the fact I referred to it as a "speech IC"
raw jasper
lol, there's an "octave shift" instruction
raw jasper
asic revision problem?
hasty wedge
I am using NY5 here which is an unsupported territory even for Nyquest
Yeah, my FDB is too old
I have a newer NY5 FDB but it's unsoldered
raw jasper
I actually like how they've bothered to translate everything to English
hasty wedge
yeah
raw jasper
I wonder if their Chinese version is actually Unicode too
hasty wedge
it works
my language and region are both English (US)
and it still displays properly
raw jasper
Probably unicode then
So, Nyquest's Chinese name is 九齊?
I get the 9, it's a good number, but why 齊?
raw jasper
I guess the company owner likes ancient history 🤷
hasty wedge
Taiwanese companies have funny Chinese to English name comparisons
for example
Super Flower
their Chinese name is 振華電腦
which translates to "revitalize China"
raw jasper
TIL 華 in Chinese actually means China too
hasty wedge
yeah
raw jasper
So, they will revitalize China with their............ PSUs
raw jasper
"Pan's pipe spring"?
hasty wedge
Sheng Spring
Sheng is a Chinese traditional instrument
yeah
and their english name is...
MegaWin
hasty wedge
yeah
hasty wedge
what does that even means lol
raw jasper
I dunno. I want a window cleaning robot now
Bender should've had a 8051 in his brain instead of a 6502
It'd be more believable
raw jasper
That MCU is like cockroaches. It'll never die out
hasty wedge
Yeah, 8051 never dies
raw jasper
If humanity still exists 2000 years into the future, we'll have 8051-powered spaceships
hasty wedge
it's even in Texas Instruments' CC series wireless ICs
8051 powered spacechips
with 256B of direct access RAM
raw jasper
Best way to ensure they'll cryonically revive you in the far the future? Become a master 8051 programmer
😆
raw jasper
And a bunch of assorted 8051 clones. The Mark Of The Master
raw jasper
Future-proof!
hasty wedge
I am reading Nyquest's Q-Code programming guide
which is an assembly generation tool for their 4-bit MCU
raw jasper
Is this... an INI derivative?
hasty wedge
I have a feeling yes
they are arranged as "paths"
a path is a series of action the chip will do when you press something / something happens
raw jasper
All they're missing is a graphical programming tool. Business Scratch
raw jasper
I imagine some poor Nyquest engineer randomly being on the server and just reading two random folks making small talk around their MCU for toy companies
hasty wedge
hasty wedge
I imagine some poor Nyquest engineer randomly being on the server and just readi...
lol
hasty wedge
just my own little test midi
sounds like some sorts of town tone of an Animal Crossing game
tardy badger
Me this morning:
hasty wedge
lol
tardy badger
All because my dog got in the trash last night 🙃
And I had to clean it up just to get to the coffee pot
tender heron
Hello, I was wondering is there a metro board in the form factor of an arduino mega?
fossil dawn
tardy badger
Hello, I was wondering is there a metro board in the form factor of an arduino m...
Grand central
Ah look, a link at the same time lol
fossil dawn
also available without headers for way cheaper
tender heron
Ah awesome thanks
tardy badger
Sometimes I think to myself, the internet has done a lot of harm to society. But then I come across memes like this and my faith in its goodness is restored:
hasty wedge
oh
@raw jasper
heres my NY3/4/5 dev board
(sorry my dirty lens made it looks like Metal Gear Solid)
That black blob is the NY3 FDB (one channel speech synthesis)
Oh yeah, also
FDB uses SmartMedia card protocol to flash and erase
raw jasper
(sorry my dirty lens made it looks like Metal Gear Solid)
A Kojima photograph
Wow, they didn't skimp on the buttons, LEDs, & DIP switches at all... But the IC does not seem to have so many IOs.. Are there some sort of shift register shenanigans going on?
hasty wedge
> `A Kojima photograph`
Wow, they didn't skimp on the buttons, LEDs, & DIP switc...
That's because the chip is NY3
Which is a state machine based non programmable speech IC
NY5 have 6 ports
Port A to F
Each of them have 4 IOs
To a total of 24 IOs
raw jasper
To a total of 24 IOs
yeah, but the board has, like, 48LEDs
hasty wedge
one set for high level one set for low level
and these switches determines if an IO is input or output
raw jasper
That's definitely something I've never seen before
vivid iron
Hey guys, can I control the voltage and current over/through an inductor with nothing but a transistor and a pwm from an arduino?
glad ruin
Hey guys, can I control the voltage and current over/through an inductor with no...
You can't "control" both. An inductor has a fixed relationship between voltage and current: v = L di/dt.
What are you trying to accomplish?
vivid iron
I wanted to make my own variable frequency drive
glad ruin
Ok, so this is a motor you're talking about?
vivid iron
I have run motors and other stuff with pwm, but I've always had trouble with fluctuations and noise and such, so I was thinking, what do I have to introduce to the circuit to avoid that
glad ruin
I think the first thing you need to look at is what supply you are using to drive the motors. If you're powering them from the same supply as your microcontroller, that is almost certainly your problem.
What is U1 in that circuit?
vivid iron
TB67S112PG,HJ
blissful roost
Some kind of voltage reg?
glad ruin
Also, an inductor is not really a good motor model. Yes, motors have inductance, but keep in mind that that inductance can change or even reverse polarity depending on the type of motor. And of course there will be coil resistance.
vivid iron
Some kind of voltage reg?
vivid iron
Also, an inductor is not really a good motor model. Yes, motors have inductance,...
no this is an actual inductor
blissful roost
Ahh, close enough. 😄
vivid iron
Ahh, close enough. 😄
lol
vivid iron
I think the first thing you need to look at is what supply you are using to driv...
I need to very precisely monitor the current running through this for closed loop control, I can run the arduino off of a seperate supply but how do I get it good and stable for accuracy?
vivid iron
So, where does your motor connect?
I figured I'd make my own, as a final project in mechatronics B.Sc
glad ruin
Without seeing more of the design it's hard to say.
Do you have some reference material or an existing design you are basing this off of?
vivid iron
aren't there rules of thumb for avoiding pwm noise or something
glad ruin
No, it's inherently noisy.
This is a case where you'd need to develop some kind of mathematical model for your circuit and likely run simulations.
vivid iron
I can't say "d*mn", but that's my reply
alright, What am I trying to accomplish modeling it mathematically?
glad ruin
That's not to say you can't get a clean output using PWM, but you can't just wing it either.
glad ruin
alright, What am I trying to accomplish modeling it mathematically?
For one thing minimum PWM frequency. But overall you are going to need to look into motor models and work from there.
This isn't the type of problem where you can just pull numbers out of a hat and expect things to work. It requires some very deliberate design decisions.
vivid iron
ok, surely I can just run the PWM as high as possible, right? and what am I trying to gauge? what is the endgoal? what are my objectives? what do I even research?
glad ruin
Since it sounds like you're at a university, I suggest taking a look in the library for books on power electronics.
glad ruin
ok, surely I can just run the PWM as high as possible, right? and what am I tryi...
Surely I can just run the PWM as high as possible, right?
Not necessarily.
What am I trying to gauge? What is my end goal?
Based on the information you have given me, it sounds like you are wanting to produce a sine wave output with a frequency depending on PWM duty cycle, and that you are wanting to get maximum power transfer.
What are my objectives?
That's for you to define.
What do I even research?
Power electronics, which includes switching regulators and motor drivers. Ultimately the circuit topology in your case is going to look loosely like an inverter.
glad ruin
just read the entire thing?
No, but most of them have at least one chapter on motor control.
vivid iron
ok, cool, thanks. I definitely don't need maximum power transfer for the power's sake, but maybe I need it for the noise reduction, a capacitor+resistor parallel to the transistor is probably all I need with the current sensing on the high side of the coil
glad ruin
One thing to keep in mind: while it is technically possible to build your own motor, it will be extremely tedious to do all the windings by hand. It will also require quite a bit of custom hardware (such as precisely shaped magnets) if you want to build a good one. That's a project in itself.
vivid iron
One thing to keep in mind: while it is technically possible to build your own mo...
I have fully finished that project, I wholeheartedly support this warning however
glad ruin
ok, cool, thanks. I definitely don't need maximum power transfer for the power's...
A resistor in series with your motor will have some very significant implications for supply stability. Keep in mind that motors draw a lot of current, particularly during startup.
vivid iron
A resistor in series with your motor will have some very significant implication...
no no no, this is an RC resistor, for the stability of the ground
glad ruin
I have fully finished that project, I wholeheartedly support this warning howeve...
Nice, so have you done any characterization for it? Do you have an equivalent circuit?
vivid iron
Nice, so have you done any characterization for it? Do you have an equivalent ci...
I don't understand the question 😅 , equivalent circuit?
glad ruin
no no no, this is an RC resistor, for the stability of the ground
In that case then it's likely the motor itself that is your noise source.
vivid iron
In that case then it's likely the motor itself that is your noise source.
I have not built the thing yet sir.
glad ruin
I don't understand the question 😅 , equivalent circuit?
Wait, I thought you said that you just finished that project.
vivid iron
I finished creating a winding system
I can now see how my words weren't precise enough, my bad
I am absolutely terrible at communicating 😅
glad ruin
A motor is an electromechanical device, so you can look at it from multiple perspectives. From an electrical perspective, each winding can likely be modeled as an RL circuit, but the component values of that circuit will depend on the physical properties or your windings and the rotation speed. A motor is a highly dynamic load.
vivid iron
yup, motors are complex
glad ruin
If you haven't already, I would definitely recommend talking to someone in your physics department. They'll probably be the best people to help you get a grasp on the math behind motors.
Fair warning: it involves ||Maxwell's equations||.
Anyways, I'm at work now. If you have any more specific questions I'll be happy to try to help when I'm available. But keep in mind that I am an electronics engineer. I can give advice on the circuit design side, not so much the electromechanical side.
vivid iron
Thank you for the help
I have been wanting to actually understand those maxwell equations, would be cool to fully know them
glad ruin
Yeah talk to the physics people.
vivid iron
alright, fine
torpid jungle
@tardy badger @glad ruin @late fulcrum and also others that helped with my project, great thanks for the help with all of the components, technicalities and insights of different circuits! Project looks to be completed, and it's so far, worked really well!
hasty wedge
I am modifying my STM32Duino installation to use st-flash instead of STM32CubeProg
I prefer the open source stuff
that doesn't stop me from flashing clone chips like APM32 and CKS32
then I realised I don't actually have clone chips
All my STM32 are legit STM32s
raw jasper
Oh well. You excised one binary blob
hasty wedge
let's go!
No more closed source programming tool that tells me what I can program and what I can't
hasty wedge
Actually I am gonna modify it to use DAPLink
rapid geode
used a different "plastic" adhesive on this one and it delaminated instantly. sigh.
inlays are super crisp in corian though. i do see that i did not fully fill the "fail" text though
late fulcrum
But did you filly fail the "full" text?
rapid geode
....
worthy magnet
hrm; is it possible to use MCP23S17 as a "possibly" to level shift 8bit IOs?
ebon dew
trying to mill a keycap with the word fail on it is like jinxing yourself. good luck. 🫡
worthy magnet
I mean I think you can drive MCP23X17 as 5V and level shift SPI
raw jasper
https://static-content.springer.com/esm/art:10.1038%2Fs41598-019-55693-8/MediaObjects/41598_2019_55693_MOESM1_ESM.pdf
A proposed tool for identifying pain in cats based on their facial expressions. I know it's from 2019, but it looks like one of those things that would be helpful to know when needed, so I'm sharing it here.
From paper:
https://www.nature.com/articles/s41598-019-55693-8
rapid geode
trying to mill a keycap with the word fail on it is like jinxing yourself. good...
shhh!
raw jasper
Destiny wants you to add the "Abort" and "Retry" keys
glacial wigeon
my keyboard already has stop and again keys!
rapid geode
bah
hehe
looking at some 3m glues. (the last one was a machine issue with a cable)
south light
Just got back from a bike ride and now my shifting problems on derailleur have gotten worse
I scored a first in damaging a cassette for first time ever
and the motor is making noises it really shouldnt 😛
All I did was ride 4 miles on low assist 😦
late fulcrum
I had recurring chain/shifting issues on mine, I finally replaced a section of chain and fine tuned the chain length, now it behaves.
rapid geode
step 1 is always check derailleur hanger alignment. then everything else. (unless it is very obvious something else is broken of course haha)
hangers being out a tiny bit can make shifting horrible and skip in a seemingly unfixable manner
warped iron
Meanwhile, mine has been slightly bent for years and somehow still cooperates
I can't find a replacement
south light
I've lost a tooth on cassette
and bent some more
Hanger looks fine
but I think the chainline is just too offset
meanwhile, very obvious signs that bearings are either failing or already failed in the motor assembly
its one of those bottom bracket replacing motors
Still working though
raw jasper
@fossil dawn (moving from general-tech)
Out of curiosity, what are you using to learn Japanese?
fossil dawn
||Duolingo|| 😱
raw jasper
You'll eventually grow past it :)
fossil dawn
it's really not that great 😂
yes
they now added kanji learning 🥳
do you know Anki?
raw jasper
lol, it only took them, how many years?
Yeah, I do. Not really a fan of how the intervals work though
It seems to be made for people who are constantly glued to their screen micromanaging their flashcard decks
fossil dawn
lol, it only took them, how many years?
about 1523 years
raw jasper
Fun fact: There was a Japanese murder mystery that was written in the 1800s and first translated to English in 2020
I can't remember the title for the life of me
fossil dawn
yes, exactly. Anki uses fancy "spaced repetition algorithms" (with a bunch of options to taylor them to you). Can you guess which spaced repetition algorithm Duolingo uses for kanji learning?
On the website it advertises "Combining the best of AI and language science, lessons are tailored to help you learn at just the right level and pace."
raw jasper
The SRS algorithm isn't even anki's
They're all lifting from the original supermemo thesis
fossil dawn
yes, but still they've implemented a decent to good and proven spaced repetition algorithm 😄
raw jasper
...and supermemo has, in the meantime, continued development independently as IIRC a windows-only proprietary piece of software
fossil dawn
And can you guess what Duolingo uses?
raw jasper
Probably some variation of the supermemo/"anki" algorithm
fossil dawn
wrong
raw jasper
o.O
fossil dawn
guess again? 😝
raw jasper
I dunno, it rolls a d10?
fossil dawn
Hint: I managed to reverse-engineer it
raw jasper
I honestly can't guess
fossil dawn
LITERALLY NONE!!! What in the actual name of the green owl!
There is LITERALLY NO spaced repetition algorithm! Absolutely NONE!
In fact, there isn't just no "spaced repetition algorithm".
There isn't even any "spaced repetition" at all!
The "right" or "wrong", "remembered" or "not remembered" have absolutely minimal effect. At most I've seen that it wanted me to repeat a kanji for one additional "lesson". It feels like the lessons for one kanji get minimally easier if you've made mistakes at this kanji before. But that's it and it seems even quite counterproductive.
The rest is 100% hardcoded. You learn 5 kanji at a time. Every time you click the one "learn kanji" button you get a lesson for currentlyLearningKanji[n], click the button again and you get currentlyLearningKanji[n-1]. After 5*5 lessons a kanji is perfected and literally never repeated again*. And then you get a new one, so there are always 5 kanji in progress.
* until you have perfected all kanji. Then I assume there is some repetition.
Now 2 examples:
- You do 5 kanji lessons per day:
Each kanji is repeated on 5 consecutive days. Each day you perfect one and learn one new one. But you're too slow because on the main learning path you get new words with new kanji way faster - You do 25 kanji lessons per day (about 20-25 minutes):
Each kanji is only repeated on 2 consecutive days. You perfect 5 and learn 5 new ones.
I'm truly impressed by how absolutely terrible this is. Seriously. I can't wrap my head around this. Honestly I would have written something better in a high-school Arduino project. And Duolingo has actual "learning scientists" and is hiring "Senior AI Researchers".
@raw jasper sorry, a) rant got a bit long b) I got distracted by something else and c) I had to write my rant in a way that doesn't get blocked by the mods 😆
tranquil swallow
Duolingo is pocketing all the money
fossil dawn
oh and one more thing their "did you draw the kanji correctly" algorithm is absolute garbage as well
raw jasper
oh and one more thing their "did you draw the kanji correctly" algorithm is abso...
Well, time to leave duolingo
Also, pro tip: there is no reason to learn how to write kanji by hand just now
I still have not learned that skill
It's something you can pick up when you need it, but most of the time you'll be writing on a PC, and the JLPT does not even test writing (you don't need to write an essay or something like in the standardized English tests)
fossil dawn
Just for your entertainment
I deliberately tried to make mistakes but you can see what it still accepts as "perfect". Especially after 0:41
raw jasper
hah, the "point" probably is to "learn the shape by tracing", not to learn the stroke order
fossil dawn
Also, pro tip: there is no reason to learn how to write kanji by hand just now
yes absolutely. But I noticed with kana that writing them a few times really helped me remember, and read them. And I think for that this Duolingo kanji section is almost not terrible. It doesn't have to teach me the kanji so I can actually write them. But some spaced repetition would still be good. As it is right now, it's just...
raw jasper
problem is, there are a few 100s of kana, but ~2k kanji
And you only have so much time
fossil dawn
And another thing with writing kana that I noticed: Writing them with a pen (wacom + Tofugu learn katakana book pdf) was what really helped me.
More than with a finger on the phone, but that's the only thing duolingo can
raw jasper
(Note that I did not say learning to write the kana was not helpful ;))
fossil dawn
absolutely understood 😄 👍
raw jasper
(Also, obligatory disclaimer that there is no wrong way to learn a language. Except perhaps duolingo :>)
fossil dawn
lmao shots fired
but can't really argue with that
And I still can't get over the fact that they do zero spaced repetition 😂
raw jasper
Spaced repetition is not the be all and end all
fossil dawn
but none?
raw jasper
It seems to promote rote memorization, not real understanding. This is helpful when learning, say, symbols (kanji), but not as useful when learning concepts
Med students seem to swear by it though
fossil dawn
even something like day 1, 1, 2, 5, 5 would be way better than just 2 days
fossil dawn
It seems to promote rote memorization, not real understanding. This is helpful w...
oh yes, absolutely
btw there is of course zero help, guide, etc to aid in understanding either. 😆 I'm not sure what would be helpful. Maybe colouring the radicals differently or highlighting similar kanji or learning one kanji in different words... anything... but no.
raw jasper
Even kanji have an understanding component. You can sometimes predict what the 音読み is from the phonetic component in the character
fossil dawn
音読み = something to do with reading/language/speech?
raw jasper
Chinese-derived reading of a kanji in Japanese
vs 訓読み-> Native Japanese reading
example: 人: （most common) kunyomi is 「ひと」、onyomi is 「ニン、ジン」
Better example: The numbers: 一：訓読み 「ひと」、音読み「イチ」
fossil dawn
yes, I've seen and noticed that
raw jasper
Which is why counters can be so weird: 一人（one person/alone) = ひとり、一枚（one sheet）＝イチマイ
But 三人＝サンニン （uses 音読み）
Even kanji have an understanding component. You can sometimes predict what the 音読み is from the phonetic component in the character
I owe you an example for that:
点= point、テン、店 テン shop
Both have 占 in them (divination)
fossil dawn
oh yeah duolingo rant number 3 incoming:
Wasted potential. I think it would help me a lot if there were dedicated quick numbers and count-words lessons. Like just count 0 to 10 for sheets and then 0 to 10 for people and then backwards or something like that. Or a few variations of 1 like 1 person, 1 sheet, 1 small animal.
Just something like that. But no, of course duolingo doesn't do any of that
raw jasper
So, what's your plan?
fossil dawn
honestly idk
the only master plan is just to not stop duolingo before I've found and successfully started an alternative so that I never get out of the "every day" rythm
raw jasper
Sounds like a good idea. Any alternatives you've got in mind?
fossil dawn
Even with all the faults, I'm still impressed how fast I learn just by doing it every day instead of at school once per week
not really tbh
raw jasper
hmm. Problem is, nothing is "perfect" so I can't really recommend anything?
fossil dawn
haven't looked that much for alternatives because I kinda was curious if I could write some level of JLPT with just Duolingo for science but now I'm not sure
And I didn't really have the energy to do stuff lately
I'd definitely like something that works on phone and ideally PC as well. And learning from English has been ok, but there were already some rare cases where learning from German would have been better
And Rosetta Stone is just absolutely not for me 😆 (I get it free from my university so I tried it for a few weeks)
cunning frost
There's WaniKani but I don't necessarily like the fact that you can't skip levels.
As much as I like SRS, it is unfairly punishing.
fossil dawn
There's WaniKani but I don't necessarily like the fact that you can't skip level...
does it also teach grammar and stuff like that?
cunning frost
I remember items that would take me about 3 months to burn because I messed up at the end.
Not really but you don't need SRS to learn grammar.
raw jasper
As much as I like SRS, it is unfairly punishing.
Yeah, WK's SRS is harsh
(Please note that WK's mnemonics were known to be... controversial in the past. My understanding is that they have cleaned them up now)
cunning frost
They are but I didn't really care about the mnemonics. Maybe during the first 20 levels but eventually you develop your own method.
At some point I just brute forced the roteness of it.
raw jasper
Yeah, any mnemonics kind of defeat the point of actually learning the character after the initial stage
cunning frost
I just knew without any prompting.
fossil dawn
I think I could just try Wanikani out 🤔
cunning frost
There are free levels with a chance to get a lifetime pass at the end of the year, which isn't worth it if you do it fast enough but at least you have it forever.
fossil dawn
What are/were you using?
cunning frost
Bonus if you already hit Lvl60, which I did and they charged me only 60. XD
solar kindle
I am now getting 3D printer and filament ads on Amazon streaming. 😄
versed meteor
I hacked this multimeter to display any number from 10-0
solar kindle
NEW COLOR: BURNT TITANIUM
It's apparently this stuff: https://www.amazon.com/Flashforge-Mulitcolor-Spool-Dimensional-Environmental-Friendliness/dp/B09XHS5F3S
versed meteor
I hacked this multimeter to display any number from 10-0
I am thinking of using it for a timer of some sorts
raw jasper
It's apparently this stuff: https://www.amazon.com/Flashforge-Mulitcolor-Spool-D...
Certainly looks like burnt metal to me
patent hemlock
tardy badger
Female flower on a male stem. This is certainly an interesting find in the pumpkin patch
The fruit on the flower is certainly odd too compared to the others on the plant
late fulcrum
I guess plants aren't constrained to a gender binary either
late fulcrum
I hacked this multimeter to display any number from 10-0
Goes to 11! I've been known to use meters in art projects doing things like that.
versed meteor
Goes to 11! I've been known to use meters in art projects doing things like tha...
I guess you could say
But I just switched the currents
late fulcrum
I just drive mine with a PWM output and a series resistor to scale the current.
versed meteor
I just drive mine with a PWM output and a series resistor to scale the current.
Hmm I using Pwm as well
How do I get the right resistance
late fulcrum
Basically, you want to limit the current to the meter's full scale current at the operating voltage of the MCU you're driving it with. So for a first approximation, just divide the voltage (normally 3.3 or 5 volts) by the meter's full scale current (generally 1mA or less). So for a 5V MCU and a 1mA FS meter, that would be 5000 ohms. Since the meter itself has some resistance as well, you may need to reduce the resistor slightly to compensate. Measuring the meter resistance directly can damage the meter, but once you have the series resistor, you can hook the whole thing to your supply voltage and either note the deflection and compute how much more current you need, or measure the voltage drops across the meter and resistor and calculate from there (this is more accurate).
versed meteor
I think mine is 3v
solar flicker
Uhm...
One litte quick question:
Circuitpython doesn't have f strings???
👀
Nvm, I am dumb.
Got syntax error too many times in Thonny and didn't see the extra parenthesis
solar kindle
I started having this feeling of encroaching doom, then I realized it was just latent "end of summer vacation" dread. 😱
hasty wedge
Just saw the STM32U series MCU
ARM v8m Cortex-M33 with ST's NeoChorm graphics accelerator
With features like alpha blending, rotation, scaling, 3D texture mapping, image compression etc
Seems like a perfect candidate for a "fantasy" console
BGA144 package
tardy badger
Seems like a perfect candidate for a "fantasy" console
Now I’m curious
tardy badger
I started having this feeling of encroaching doom, then I realized it was just l...
My son started back school yesterday, so I feel it
tardy badger
But I’m excited for autumn
hasty wedge
At least it's easier than these Chinese and Taiwanese OTP PIC clones lol
You can probably shoot ST an inquiry
There's also this thing
A dev kit
With round display?
raw jasper
At least it's easier than these Chinese and Taiwanese OTP PIC clones lol
You seem to want to make a fantasy console :P
hasty wedge
Nah
But I do want to make an electronic pet tho
With something that's capable of low power like STM32
Not random Chinese clones
raw jasper
Eternal tamagotchi! :P
hasty wedge
raw jasper
the real things run on sunplus 6502
hasty wedge
Yeah
raw jasper
So, I don't think you'll have any trouble making a better one with a better mcu
raw jasper
yeeah, though I think even the rp2040 will allow you to put, like, most of the peripherals to sleep
raw jasper
Or something like RP2040
ninja'd
hasty wedge
Loads everything from SPI flash on boot to RAM
Then shuts the SPI down to save power
raw jasper
when the v-pet is sleeping, it shuts down most of the ram banks
raw jasper
hasty wedge
A different approach is to use STM32's RTC battery and EEPROM
Use RTC to keep time then load and calculate everything every time the player powers up the pet
Just like these early iPad games that uses iOS system time for progression
raw jasper
You'll have to set rtc alarms for the obligatory annoying beeps
hasty wedge
raw jasper
(or ble smartphone notifs -- we are in 2023 after all xD)
hasty wedge
Can STM32 be powered from that coin cell?
If it can it can definitely drive a piezo horn
hasty wedge
25ma is enough for piezo sounder
raw jasper
Can STM32 be powered from that coin cell?
Oh I was talking about powering the thing from a coin cell
hasty wedge
Unless I wanna make my pet shout for food with 115db like a burglar siren
hasty wedge
Oh I was talking about powering the thing from a coin cell
Not everything, just powering up the CPU and GPIO briefly to drive the piezo
Then the user can turn on the main power which poweres up the LCD
Also I am using STM32F103
Not L series
raw jasper
Not L series
I just randomly downloaded the first datasheet mouser returned 😂
hasty wedge
LOL
L series is their low power series
So it's a good choice
But STM32F103 is the easiest thing to get
raw jasper
Yeah, especially if you also want a devboard
hasty wedge
I am also considering GD32F103 tho
late fulcrum
Oh I was talking about powering the thing from a coin cell
Sounds like a job for an MSP430, their FR versions are the lowest power consumption
raw jasper
I am also considering GD32F103 tho
I've never heard of GigaDevice before
hasty wedge
It's like STM32F103 but runs faster (100+MHz) and not binary compatible
Right!
MSP430
But the only von neumann stuff I want to deal with right now is RP2040
late fulcrum
You prefer Harvard architecture like the Sharc DSP line?
raw jasper
Most of the modern stuff is a cursed concoction between the two anyway
hasty wedge
Harvard is a tad easier to manage
raw jasper
(think NX bits)
hasty wedge
But von neumann is flexible af
raw jasper
Yeah, and liable to be exploited by more things than ROP. Which you probably don't want in embedded devices
Since your FW is static anyway
(Unless OTA'd)
late fulcrum
One useful trick the FR series chips has, is you can divide the FRAM between program storage and data storage, so some of your RAM is magically non-volatile.
hasty wedge
Yeah, and liable to be exploited by more things than ROP. Which you probably don...
True
I'll probably just use STM32F103 with an external EEPROM with autosave
With an RTC also, or use the internal VBAT RTC
Primary power source will be removable AAA cells
raw jasper
Primary power source will be removable AAA cells
why not some rechargeable battery?
no need to relive the gameboy days
BTW, what was your equivalent of the gameboy in China?
hasty wedge
BTW, what was your equivalent of the gameboy in China?
Gameboy
Nothing special
Just normal Nintendo Gameboy
raw jasper
Ah, so they imported the nintendo stuff. OK! Sorry for my ignorance :)
raw jasper
So, much like the rest of the world where nintendo did not necessarily have a strong first-party presence haha
hasty wedge
Yeah
I also have a bootleg famiclone with discrete DIP CPU and PPU
Not these glob crap
I also have a real North American NES
But since we have 220v 50hz here
It doesn't really work
raw jasper
I remember reading about a very special Chinese famiclone that ran a version of DOS and even had a floppy drive and some sort of assembler
hasty wedge
Xiaobawang
raw jasper
There was a xiao in the name certainly
raw jasper
ha, eternal joy
hasty wedge
It's NTSC like the rest of my game consoles
raw jasper
I've only ever seen blob famiclones
hasty wedge
It's surprisingly easy to play NTSC games in China which is PAL
Because everything here except the TV programmes are 60hz
Lol
It's not even PAL-60
Just straight up NTSC
raw jasper
The last generation of European CRT TVs could effortlessly decode both
hasty wedge
Same applies to my CRT, it's made to accept both
And ofc it's no longer an issue for LCDs
raw jasper
CRTs were more fun in that they could go up to a relatively arbitrary refresh rate
No paying more for 120Hz :P
OFC, the hw at the time could not really drive that
raw jasper
It's not a great experience. OTOH, I lost my CRT in a move
hasty wedge
There's always latency compared to my trustworthy CRT
hasty wedge
It's not a great experience. OTOH, I lost my CRT in a move
Oh no, I am sorry to hear that
raw jasper
Also the pixels are kinda wrong, though these days there are shaders that account for that
glad ruin
DP 100%
raw jasper
I've never had a computer that could do both
glad ruin
HDMI is an idiotic design run by Hollywood in order to collect royalties.
hasty wedge
Yeah
fossil dawn
I have to use HDMI because my Monitor (with DisplayPort) is incompatible with Nvidia RTX Graphics cards (with DisplayPort) 😆
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raw jasper
I have a machine that only has DVI
hasty wedge
It also have an Intel Xeon W-1290 10 core CPU
fossil dawn
I have a machine that only has DVI
RP2040? 😝
hasty wedge
hasty wedge
RP2040
raw jasper
With some older intel CPU
hasty wedge
Also, that Hi-Res Audio is BS
raw jasper
It also have an Intel Xeon W-1290 10 core CPU
Desktop Xeon appears to be common in China
glad ruin
<:AnyaWaku:1007029200726802562>
hasty wedge
Desktop Xeon appears to be common in China
Very common
raw jasper
Is it just me, or is it there a specific reason?
hasty wedge
Is it just me, or is it there a specific reason?
Cheap
hasty wedge
It's a 10th gen Comet Lake Xeon
raw jasper
No parts recyclers over here
hasty wedge
Very new
fossil dawn
Also, that Hi-Res Audio is BS
https://www.adafruit.com/product/3006 I think technically this thing is "Hi-Res Audio" as well 😆
hasty wedge
But only costed me 80 bucks
raw jasper
Was it new, or ex-server?
hasty wedge
Decommissioned
raw jasper
Yeeeah, sadly there's no market for decom parts around here
Even those are jacked up in price by "refurbished " resellers
hasty wedge
China's decom part market is gigantic
Companies all dump their mostly new stuff here as trash
Where they can find new homes
And decrease e-waste
thick wind
The one thing I envy China for.
raw jasper
I've seen some hacked-up Chinese mobos with strange BIOSes that allow for, say, using a laptop CPU as a desktop one
hasty wedge
My decom Xeon is super stable
raw jasper
I guess yours is a similarly custom solution?
hasty wedge
Can run cinebench like a champion
hasty wedge
I guess yours is a similarly custom solution?
Yeah