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.

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This component includes the blink example. It can be used as a starting point when developing an application on Nano ESP32 board. Aside from the obligatory blinking of LEDs, the example also contains ...

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