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 ...

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

Turn ON an LED Sketch This is a very simple arduino project where a led is turned on by setting the pin 13 as output, then write it with a high value, in our case that means that pin 13 will deliver 5 ...

Comparing the Arduino Uno ... simple circuits like LEDs, PIR motion sensors, and other small loads. And yes, the supply provided by the USB port should already be sufficient for you to use the 5V ...