Jeff Tranter's Blog

I earlier talked about the HT16K33 chip which controls the LEDs. It also scans the keyboard keys which are across part of the same matri...

The four alphanumeric LEDs on the MeinEnigma are controlled by the HT16K33 chip in a similar fashion to the discrete LEDs. The only diff...

How do you control 26 LEDs? A simplistic approach is a digital output pin per LED, but you would need 26, more than most Arduino boards ...