Jeff Tranter's Blog

In this installment we'll tie together much of what we looked at in this blog series with a larger application. I decided to imple...

The plugboard circuitry uses two MCP23017 16-bit i/o expander chips. This chip features two 16-bit bidirectional i/o ports controlled ov...

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 ...

For the next installment of programming the MeinEnigma hardware, we'll look at something simple: reading the positions of the rotary fun...

In this next instalment we'll look at how to play sounds on the MeinEnigma hardware. Sound support is provided using a DFPlayer Mi...