Kevin Santo Cappuccio

youtube.comJumperless V5 - Launching September 23rd on Crowd SupplyYouTube video by Architeuthis Flux

20 Sept 2024

We (and I cannot stress this enough) are so back. www.youtube.com/watch?v=fJTE...

Holy fuck you guys they snuck in another dash while none of us were looking

Turns out you can get laser cut sheet metal ~10x cheaper by pretending it's a solder paste stencil and ordering from @jlcpcb.bsky.social. Suck it, SendCutSend!

This is @lasermistress.bsky.social's design, I just wanted to see if JLC would complain. So if you want these, maybe bug her about it.

What I should to do is make a script that'll put a few of these in the borders of whatever paste stencil you were ordering anyway. I guess I should test with reasonable thicknesses for paste

You have been hypnotized by garbage.

Crazy what you can do with a handful of magnetometers and like, 𝒂𝒍𝒍 the math.

I made a board to properly test this out but it's not here yet. I imagine the tracking will be smoother when the magnetometers aren't so jankily placed.

20 Sept

Check it out, I accidentally replaced an 8 bit 1010 RGB with a 16 bit one and turns out it still works. I'm guessing the weird color is because it's taking RRGGBB from 2 LEDs' RGBRGB data. I would've expected there'd be issues with a start frame in the middle but apparently not.

26 Aug

It only counts as real pizza if it's flat to within +/-.000030"

26 Aug

Ha I just noticed how much that oven rack is fighting for its life holding up that 80 lb granite surface plate.

I found these 64 channel HV analog switches that don't need HV in, but turns out they can't pass DC because they harvest power from the signal to charge a floating gate for the MOSFETs. It's such a wild circuit I had to make it in Falstad to get it on a vibez level. falstad.com/s.php?s=uLEHuT

There's also a similar thing called a Body Snatcher that "snatches" the most negative voltage from the input and uses it to power the MOSFET body. The difference here is it's doing it in real time instead of charging a floating gate capacitor. www.falstad.com/s.php?s=KdqHJf

microchip.commicrochip.com

The chip in question: microchip.com/hv2825

Okay whatever AI they're using to fill out fake employees in Shenzhen is a friggin' comedic genius.

21 Aug

Me telling people how to use KiCad: "Just make your own footprints it takes like 2 seconds" Me actually using KiCad: 3 days and 8 printed mockups in for a single cursed 2x35 pin header / card edge footprint.

21 Aug

I don't want the card edge bit sticking out too much for aesthetic reasons, so I'm resin printing the boards and putting chalky marker on them to figure out the absolute bare minimum length that will still grab the board and make contact. I welcome the roast by @cursed-connectors.bsky.social

embedded.fm532: It's Still Real Fire — EmbeddedKevin Santo Cappuccio, founder of Architeuthis Flux, joins the show to discuss creating Jumperless, an open-source breadboard that replaces physical jumper wires with software-controlled analog crossb...

21 Aug

Of all the questions I completely blanked on, the only one I actually regret is my favorite fictional robot. I could've had an existential crisis choosing between Daneel, Bender, and the sentient coin-op door lock from the beginning of Ubik.

Embedded@embeddedfm.bsky.social

Kevin Santo Cappuccio, founder of Architeuthis Flux, joins us to discuss creating Jumperless, an open-source breadboard that replaces physical jumper wires with software-controlled analog crossbar switches. Listen here: embedded.fm/episodes/532 #electronics #micropython #opensource #oshw

9 Aug

I SELL THESE I WILL HELP YOU MAKE THESE

9 Aug

Turns out your house has been giving you free music this whole time through the wall outlets. The DJ just plays this 60Hz trance album but I’ve been calling the power company to request different songs.

9 Aug

I may have overestimated how load-bearing this image is

Kevin Santo Cappuccio reposted

Sam Ettinger

@settinger.net

4 Aug

I missed my monthly "don't buy a resin printer" meeting with @jumperless.org because I was hand-soldering a 3×2mm WS2811 IC to a flex PCB. If you want a Neopixel with colors other than RGB, turns out you can just make your own by having a long enough manic episode.

4 Aug

Check out my state-of-the-shit-I-had-laying-around vodka-cooled resin curing system. DMs are open, investors.

@settinger.net missed his monthly appointment to tell me not to buy a resin printer so I did. These things friggin' rule (for the kinds of things I tend to make) But I also see why the washing and curing stuff is such a big deal, my tupperware full of vodka and 3 UV flashlights aren't gonna cut it.

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If you're wondering what I'm cooking here, it's a new thing I'm super hyped on. It's like a regular breadboard BUT: 6 holes so you can put double row headers in the middle aligned power rails a 70 pin card edge connector on top mapped to the rows (for adding a Jumperless-as-a-module or whatever)

And the coolest part: the top surface is a replaceable protoboard PCB. So you can breadboard something, then if you want to keep it, solder everything in place and pull it off as a permanent PCB and just put on a fresh "Wig."

I think Sam underestimated my willingness to turn my house into a Superfund site if it means I can sanity check models as I design them. This was a 12 minute print (plus half an hour of living in goo land.)

youtu.beMaking a Display for a knockoff TrackPoint™ like it's 1970 (part 2)YouTube video by Architeuthis Flux

7 July

not a microcontroller in sight. just chips living in the moment. youtu.be/Hph5X5c54fs

7 July

I bought this stop motion armature as a source of ball and socket joints and made a huge mistake by putting it together. It is now a friend so I need to get another one to harvest for linkages.

youtu.beMaking a TrackPoint™ from strain gauges and op amps like it's 1960YouTube video by Architeuthis Flux

29 June

youtu.be/86HdckkVrO4

23 Apr

Man, PIO is so ridiculously OP.

github.comGitHub - Matthias-Wandel/Pico-femtofarad: Relative measurements of very low capacitances using timing on digital I/O lines using Pi Pico PIO state machinesRelative measurements of very low capacitances using timing on digital I/O lines using Pi Pico PIO state machines - Matthias-Wandel/Pico-femtofarad

23 Apr

This is just copper pads hooked up directly to gpio, and PIO state machines reading tiny changes in capacitance... without any "real" analog circuitry. (Credit to Matthias Wendel, I stole his pico-femtofarad code and made it into a 3D gesture sensing thing.) github.com/Matthias-Wan...

23 Apr

This was my super janky setup just to check if it would work at all

13 Apr

The ALASKAN BULL WORM! PSRAM Mod kits are in. I was worried about the fit around that flash chip but the vibes-based clearance was so on point you could probably get away with just friction fitting them.

13 Apr

It still blows my mind you can get a 1mm working height pogo pin.

13 Apr

If you preordered one of these, I should have them out todayish. Turns out they're easier to install than I thought, but I'll have a link to the instructions on the product page before they get to you. shop.jumperless.org/products/ala...

3 Apr

**Refuses to elaborate further (but mostly because I have no idea wtf this thing will actually do yet)**

3 Apr

ALASKAN BULL WORM update: They look sick af.

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shop.jumperless.orgALASKAN BULL WORM! Jumperless V5 PSRAM Mod Kit8 megabytes of extra room for activities! Do PCB assembly crimes in the process! The Jumperless V5's RP2350B has 520kB of RAM, which is pretty awesome for a microcontroller. But in the course of scope...

Btw if you preordered one of these, they'll be going out soon. It took an extra week because I'm dumb and made that pogo pin hole with 0.002 mm of clearance. shop.jumperless.org/products/ala...

ALASKAN BULL WORM update: They look sick af.

Oh also they work