You can control the brightness of these LEDs using variable resistors VR1, VR2 and VR3 respectively. Parts Needed. Arduino UNO board – 1 ; 5mm LEDs Red, Green, Blue – each 1 ; 100K Variable resistor – ...

This project demonstrates how to control an LED connected to an Arduino board using serial input from a computer. By sending specific commands through the Serial Monitor, you can turn the LED on or ...