LED Heart Keychain | LED ChaserMay 5, 20191 min readYouTube Tutorial:-https://youtu.be/y8bHGWsYJ2MMaterials:-LEDResistor 1kCapacitor 1uf , 10uf IC 4017555 TimerPotentiometerSchematic:-Gerber Download:- https://drive.google.com/open?id=1MkE-q0wEUAnPLqAyhGVYPSuAKNxFvjBA