7-Color Auto-flash LED Module

SunFounderSKU: TS0220

In stock


Auto-flash LED looks just like common LEDs (see Figure (a) for its schematic diagram). It is composed of a CMOS integrated circuit (IC) and an LED, as shown in Figure (b).
It contains a three-pin anti-reverse header (a 3-pin anti-reverse cable is provided) labeled with GND, GND, and VCC beside. Connect 5V or 3.3V to the VCC (the higher voltage you use, the LED will be brighter), then either of the GND to GND of the power. 

When using the diode, pay attention to its pole and not to connect it inversely. Generally, the longer pin is anode (connected to anode of the power source), though the case can be different. So please be careful when using it.
With a simple structure and small size, auto-flash LEDs are widely used in toys and alarm or warning circuits. 


  • A module with an auto-flash LED that can flash up to 7 colors. 
  • No programming needed. Just connect it with the power supply and it'll work. 
  • Working voltage: 5V. 
  • PCB size: 2.0 x 2.0 cm. 

Package List 

  • 7-color auto-flash LED module x 1
  • 3-Pin anti-reverse cable x1

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