It works y’all! A #circuitpython powered typewriter machine. The #adafruit KB2040 blips out a sequence of binary data into a Swintec 1146 CMP’s parallel port, one character at a time. When the typewriter receives a newline, it tells the code it’s busy, and taps out its text buffer.
A #microbit sends signals to the optoisolated #MOSFET gate driver, unaffected by the higher voltages involved in pulsing current through a coil of magnet wire which causes the paper heart to beat.
Just had a look at the release video. I was looking on things to criticize it on, but couldn't find anything. ESP32 integrated...a bunch of memory (which I probably would never use though tbh)... and is that an LED matrix I see? Also USB-C!
The price point is surprising - $20. Even converting that to AU, that's an amazing price. I think I saw R3s on sale for 3 times that at core electronics...but then again, core electronics will be core electronics.
I am struggling with the cargo paths, which i think i corrected by hand - not very nix like. But i fail to get the toolchain for esp running.
Cargo-espflash seems to kind of work but cargo-espup is not a thing.