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 GND to the ground rail. For the data connections, wire SDA to Pin 10, SCK ...

int alcoholLevel ... Explore similar DIY projects that use techniques like facial recognition and heart rate monitoring to detect driver drowsiness and keep you safe with timely alerts on the road.