With this, I experimented with a lacquer finish as a soldermask it came out pretty well actually.Ĭomplex hardware, simple software (Arduino):įirst I installed the megaTin圜ore library into Arduino.įollowed these instructions to make a UDPI programmer out of an arduino. I tried them both to see what I could simplify about them.įirst, mill the board. One is simple software but complex hardware (Arduino-based) and the other is simple hardware and complicated software (python upload/downloader). There are two easy ways of making a cheap programmer for this. The new chips use UPDI instead of ISP protocol. Once the board was made I needed a programmer. 2x 2×2 SMT header (Optional, general purpose for connecting other stuff to).My new design used KiCAD and is available here. Here’s my old design which was an EagleCAD Board file.It is based on Neil’s design for the AtTiny412 (Go here), ctrl+f for Attiny412 and look at his “board” link) board but I moved the LED to Digital Pin 0 (which is PA6 in Atmel speak – pin 2 from the top left) of the chip. This is a tiny 8-pin chip is pretty neat. The new chips the lab got were AtTiny 412. ![]() ![]() ![]() ![]() In the 2020 season of Fab Academy, we are encouraged to use new chips (as opposed to the Attiny 84/85 chips).
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