Posted by david927 2 days ago
Ask HN: What are you working on? (September 2026)
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.
...and I am working on adding Euchre and hopefully (eventually) Bridge, after I learn how to play myself.
TL;DR: magnets.
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