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In a project for Uppsala University we want to have a charge indicator. The module consists of 10 individual LEDs, but instead of wasting 10 GPIO-pins on this task, here I show how we can use Charlieplexing and reduce the number of pins to just four.
I'll also go briefly through my procedure on making y own circuit boards using the toner transfer process.
This video is related to my previous video on Charlieplexing • Controlling 24 LEDs wi...
Also there is my previous video on how to use PlatformIO without the Arduino framework: • ATmega328 and Platform...