DIY KIT 5- 3 LEDs Cycle Flashing Light DIY Kit
This is a simple blinker/flasher DIY kit with 3 LEDs, 3 transistors, 3 capacitors, and.
LED blinker
Arduino Project 1- Blinker or Flasher using Arduino UNO
This is the most basic project for Arduino beginners. Almost everyone starts Arduino with this.