Plug the RFID module into the breadboard with enough space around it. Connect the VCC pin to the Arduino's 3.3V (not 5V), and ...

Original Circuit Diagram: Arduino UNO R3. Now, have a look at our favorite Arduino UNO to find out the AVR chip inside. It is ATMega328P-PU, a low-power version of the traditional ATMega328-PU. The P ...

This DIY gas leakage detector is designed for educational and basic monitoring purposes. For critical safety applications, ...

On the Uno, Nano, and Mini, the PWM pins are on D3, D5, D6, D9, D10, ... (found on the board's Arduino Store page). PWM pins in the diagram have the same tilde sign in front of the pin numbers.