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Pin Setup: Each component, such as the lights, sensors, and buzzer, is assigned to specific pins on the Arduino. 3. Setting Up Virtual Pins for Blynk #define VIRTUAL_PIN_TEMPERATURE V1 #define VIRTUAL ...

Enter the ExtraCore library for Arduino, a software library that turns two or more Arduinos into a multi-core microcontroller with more pins than you’ll ever need.

[Trent M. Wyatt]’s CPUVolt library provides a fast way to measure voltage using no external components, and no I/O pin. It only applies to certain microcontrollers, but he provides example Ar… ...