Matt Thompson

Working on an MNA circuit simulation engine

@zackslab Thanks! It’s really refreshing and have the best solid sleep. We often book a site for a month, and go back and forth from home, as it’s only 10 mins away. Beach access for paddle boards and kayaks

@fuzziphy looks amazing!

My office since Thursday

@timorahkonen @3DPrintAficio AD633 are readily available but costly. You can make 4Q multipliers out of LM13700 OTAs, maybe MC1496, or discrete transistor Gilbert cells

@3DPrintAficio @fuzziphy Lin-lin multiplier is somewhat rare creature.

The butterfly effect. Classic Lorenz strange/chaotic attractor using 3 integrators, 2 multipliers (Horowitz design)

@BluesfireTV @willreil I never had great success with fine pitch footprints with single layer 3D prints, or laser cut PET on my CO2. A frame probably would have helped a lot, but i got a voltera and haven’t tried homemade stencils since.. just print the paste gerber directly

@willreil Got some stainless steel ones on the way since I need the install to be perfect, but I’m still messing around with the printed version to see how good I can get it. Would be better if I had a non textured plate.

This is so cool to see people pushing what you can do with 3d printed stencils. The results look pretty good to me but I've never soldered a package like that.

@kyleanthony @zackslab Arguably Asia dominated manufacturing because they focused effort on a core value prop, and rewarded incremental improvement rather than sitting at desks bikeshedding over what colour and font the logo should be.

@zackslab do I really need to explain that?

We need to rebrand this company ASAP

Why does fusion360 seem to get slower and buggier every time I update it

@dalodaloz @yacineMTB Do they still go to South Carleton for high school though?

@yacineMTB Riverside south/ Manotick is the alpha my guy

I need a nanny man

@TommyYesItsMe @straceX This would require capabilities flags or root, at which point encryption won’t save you. Could just pull the key from RAM, or read the post decryption buffer

@straceX And that's yet another reason why all internet protocols should be encrypted.

linux networking is so low level that you can sniff every packet your machine sees with a single raw socket. without wireshark and libpcap the kernel handing ethernet frames directly to userland. linux literally exposes raw layer-2 traffic to userspace.

@iosefkay @samsoniuk Nice, didn’t know this

@fuzziphy @samsoniuk Try the Altera Self-Service License site. You can get Quartus Pro free for noncommercial use for 3-month intervals

wow! lots of people talking about Alibaba's cheap and powerful FPGA boards, mentioned by some random digital influencer yesterday... amazing, but we already had same cheap boards from Azure on Ebay, 5 years ago! 🤣

Oops. Always check your toolpaths. Still had some holes selected when I created contour cuts.

I wasted an hour yesterday trying to choose the best way out of about 10 half baked ways to control the fan speed in Linux on a thinkpad so it stops sounding like a jet engine at 10% CPU usage. Gave up, used acpi defaults, and went back to my MacBook to ssh into it from another room

How do linux people even get things done with all those cool animations and customizable options?

I’ve never understood why they lock down toolchains so much. Sell enterprise features and support, sure.. but the hobbyists or early stage startups were never going to buy a license in the first place, and will just switch vendors. They should be removing friction, not adding more.

@luigifcruz @enjoy_digital @AMD Hoping this was a typo.. but we need more @YosysHQ+nextpnr on AMD/Altera

I made an 8 channel DDS DAC on an FPGA as an oscillator bank (sallen key filters on 1bit PDM), and making some general analog building block modules that plug into a breadboard. Mostly interested in analog compute/physics attractors experimentation, but yes operating mostly at audio frequencies, and using MIDI controllers to tweak the oscillators. Could absolutely be a polyphonic synth. x.com/fuzziphy/statu…

@fuzziphy Sweet! Is this for a VCO? Audio frequencies?

Made another pair of PCBs. These are dual OTA-C+opamp integrators per board, with voltage controlled integration rates. Essentially a standard opamp integrator configuration, but with an OTA in the feedback path modulating the capacitor charge current.

@MORGkorg @AaronBergman18 I’ve always used it to mean an informal or low value test.. i assume it originates from hardware. If you apply power does it let the magic smoke out?

@AaronBergman18 people abuse "smoke test" when they should just say "test"

Nobody: Somebody somewhere occasionally: uses the term "smoke test" very occasionally Claude Opus 4.7 every other sentence: let's run a smoke test

@lookoutitsbbear @_Stocko_ This would like a bridge tied load in audio with a floating ground. The bridge is flipping polarity on the outputs, so if you wire two terminals together and drive them in opposite directions you get shoot through

@_Stocko_ lemme figure this out real quick what is powering the motor driver? L298N? or some other thing?

wait..... i can't share the ground on these motors.. they drive independently