Sound Activated Light Switch Circuit

Full circuit diagram and parts list can be found here.

Sound activated light switch circuit.

8 thoughts on sound activated switch ratnadeep march 3 2012. 2 claps turn on the lamp. Whistle activated light switch circuit with pcb. The 3 holes was leds showing on or off state and ultra sound level the 3 led is floting arround inside the box i did not glue them enough a.

This is simple sound control circuit as the whistle activated light switch circuit that different from a little common circuit is requires high frequency noise such as whistle sound etc. More buying choices 11 35 2 new offers elenco sound activated switch soldering kit soldering required 3 6 out of 5 stars 14. The sound activated on off switch. It is a low cost microphone that can be found in every cellphone laptop camera and so on.

With clap detection lights. Dc5v 12v 24v sound sensor light control relay switch time delay turn off module. 3 claps turn on the tv. Schematic of the sound activated lights circuit assemble the circuit on a general purpose pcb circuit board and enclose in a plastic cabinet.

Clap sound light switch this box is a 40khz ultra sound detector with a latch and an output relay when you clap your hands the relay turn the light on when you clap again the light goes off. With this sound activated switch control by sound may be very useful not just on a robot but also for a bit of home automation for example a sound activated light responding to a knock on the door or a hand clap. Power can be derived from a 12v 500ma step down transformer with rectifier and smoothing capacitor. Surprisingly much can turn on shut down electric devices with a whistling sound.

The main component of the circuit is the electret microphone and it is used as the sound sensor. An electret microphone is a type of condenser capacitor based microphone that converts sound energy to electrical energy. The clapper can control one or two appliances at the same time.