Arduino Smartphone Controlled RGB LED Light Dec 1, 20181 min readUpdated: Dec 2, 2018YouTube Tutorial:-https://www.youtube.com/watch?v=3Xk0H940NL0 Materials:- Arduino NANO HC-05 BT Module RGB LED Common Cathode Regulator 7805 Transistor 2N2222 Resistor 4.7k, 100 PCB Header Circuit:-Code:-