LM393 – BuildCircuit.COM

DIY KIT 43- LM393 based light operated switch with relay

BuildCircuit5 years ago5 years ago01 mins

This is yet another dark/light sensor project that uses a photoresistor. This kit has an LM393 chip and there is a relay also. It is a light operated switch. 【Great School Science Project】: The light operated switch can be a great school project for children. It is widely used to help students learn basic mechanical…

DIY Kit 3- Heart Shaped LED flasher DIY kit with LDR

BuildCircuit6 years ago5 years ago01 mins

It is a simple LDR based ‘Happy Birthday To You’ music player. When you block the light falling on the LDR, the kit stops playing the music. There are 18 flashing LEDs and the buzzer plays “Happy Birthday to You” song. A photoresistor or LDR works here as the photosensitive element. The jumpers are used…