Want to program DDT2 on your own?

0. Obtain Arduino IDE 1.8.9 or newer (included avrdude must support atmega328pb).
1. Append content of ddt2-boards.txt to the end of ./hardware/arduino/avr/boards.txt
2. Copy pins_arduino.h to directory ./hardware/arduino/avr/variants/atmega328pb/ This directory may not exist.
3. Edit demo.ino as you wish.

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