Please define board in avrpins.h" error compiling for board Arduino NANO 33 IoT. · Issue #608 · felis/USB_Host_Shield_2.0 · GitHub
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![SOLVED]: FTDI to breadboard Arduino - not in sync error - General Electronics - Arduino Forum](https://aws1.discourse-cdn.com/arduino/original/4X/8/7/a/87a9e848cb8f66d54adc3d02df0bd527def51b9a.jpeg "SOLVED]: FTDI to breadboard Arduino - not in sync error - General Electronics - Arduino Forum")
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