Waveshare ATMEGA328P Microcontroller Development Board, Arduino-Compatible

The ATMEGA328P is the microcontroller behind the Arduino Uno and one of the most thoroughly documented chips in the hobby electronics world, which means a project built on it benefits from an enormous library ecosystem and years of community troubleshooting. Being Arduino-compatible, this board accepts the same code, shields, and development workflow as a standard Uno without requiring any adaptation, making it a drop-in choice for anyone who already knows the Arduino environment and wants that same familiar chip on a board sized or priced differently from the standard Uno.