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Posted by david927 2 days ago

Ask HN: What are you working on? (September 2026)

What are you working on? What have you been curious about lately?
363 points | 1139 commentspage 68
yu3zhou4 2 days ago|
I study stats and probability
mrheosuper 2 days ago||
porting librespot to C using Zephyr RTOS. Mostly vibecode, to see how far LLM can go.
Mohamed_Amineio 2 days ago||
working on building a way to make me me one of the best trader helper nexalione.com
Retro_Dev 2 days ago||
finding simple bipartite expander graphs for better LDPC (expander) codes
achillesheels 1 day ago||
Simplesend - easy PHP shared server html page for mom and pop bloggers: adilettante.com/simplesend.html

Limit of 500 send a day.

LightOrderCode - PDFparsing lighting manufacturing spec sheets for rapid lookup and send for bids/quotations. Will update on the link in the next few months.

daugasauron 1 day ago||
https://daugasauron.com/ Not sure what happened sort of became something docker ish in wasm, complete slop, fun to watch agents play games against each other. Wish I could afford a complete fable vs astra showdown in seven kingdoms.
nextharu 1 day ago||
this looks amazing
FloayYerBoat 1 day ago||
I released my free 1-4 player card playing app:

https://cards4play.com

...and I am working on adding Euchre and hopefully (eventually) Bridge, after I learn how to play myself.

utopiah 2 days ago||
Keyboard pants https://mastodon.pirateparty.be/@utopiah/117157231799845118

TL;DR: magnets.

mindcrime 2 days ago|
I've been doing a bunch of stuff with using a PUT[1] to simulate an IF (Integrate and Fire) neuron[2]. Right now I'm experimenting with variations of pulse-width and frequency of the input spike train, seeing how that affects when the "neuron" fires. In a future step I'll add a resistor to bleed off some of the charge from the timing capacitor, to make it more of a "Leaky Integrate and Fire" neuron.

And then ... well, we'll see. I'm also reading a lot of books and stuff on neuroscience, neuromorphic computing[3], analog computing, etc. I don't have some "grand unified theory" or anything, just playing around in this space.

There's a lot more I could say about this, but I'll save that for a blog post or something. That said, if anybody wants to see some pictures and read some write-ups of some of this stuff, add me on LinkedIn[4] and you'll see some of that stuff in my activity there.

EDIT:

What the heck, here's a picture for anybody who's interested.

https://fogbeam.com/images/scope_20260913_202613.png

The magenta trace is the "spike train" which is output from a Rigol DG4162 Function Generator. The yellow trace is the voltage at the anode of the PUT, which simulates the "action potential" of the neuron membrane. And the cyan trace is the cathode of the PUT, which simulates the output of the neuron. What we see here are several input pulses hitting, with each bumping the action potential up a little, until it finally hits a threshold and then "fires" and resets. Lather rinse repeat.

[1]: https://en.wikipedia.org/wiki/Programmable_unijunction_trans...

[2]: https://neuronaldynamics.epfl.ch/online/Ch1.S3.html

[3]: https://en.wikipedia.org/wiki/Neuromorphic_computing

[4]: https://www.linkedin.com/in/philliprhodes/

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