DIY Electronic Welding Practice Kit NE555 Red, White And Blue Three-Color Flash LED Alarm Light Strobe Module Production Design Kit

Parameter:

Product Name: Tri color Flashing Light

Product Model: TJ-56-715

Finishedproduct size: A board 60.7 * 37mm, B board 35 * 26mm

PCB material: Single panel FR-4 1.6MM green oil white letters

Supply voltage: DC 12V

Introduction:

This kit consists of A control board A and three light boards B, which are red, blue and white respectively. After the power is powered on, the red and blue light board blinks twice respectively, and then the white light board blinks once, so the alternating cycle. Master the principle of this kit, you can make running horse lamp billboards or decorative atmosphere lights.

The circuit consists of NE555 circuit, CD4017 circuit, and LED light circuit.

The pulse of the square wave signal generated by the NE555 circuit is output from pin 3 of the 555 chip. The frequency of the output pulse is determined by R2, R3, R4, and C1. The output pulse is connected to the pulse input part of the CD4017 circuit. For each pulse generated, the output of CD4017 moves from Q0-Q7 to the output high level to drive the transistor to conduct, and the corresponding light board lights up.