After this tedious step, he designed a PCB that hosts an Arduino Nano to accept input, two MCP23017 GPIO expanders to give it enough outputs, and CD4066BE CMOS switches to trigger the connections.

This library is a Arduino-friendly version of TinyUSB stack. It is designed with structure and APIs that are easily integrated to an Arduino Core. There are 2 type of supported cores: with and without ...

Base on servo library for stm32f4 (d2a4a47).