3pcs DIY Two Color LED Thunderbolt Flash Kit Teaching Kit
This kit uses NE555 and CD4017 chips to form an analog alarm lamp circuit. Blue and red LED flicker alternately according to the pulse, and RP1 can adjust the flicker frequency. The working voltage of the circuit is DC9-12V. The kit does not contain power supply. It is easy to make and has obvious effect. Interesting, suitable for beginners and hobbyists to learn assembly.
3 x DIY Two Color LED Thunderbolt Flash Kit