login
Sound Activated Switch – Relay
- Rajkumar Sharma
- 54.874 Views
- medium
- Tested
- SKU: EL36088
- Quote Now
- 0 Likes
This project is a sound activated switch.
Description
Clap switch/Sound-activated switch designed around op-amp, flip-flop and popular 555 IC. Switch avoids false triggering by using 2-clap sound. Clapping sound is received by a microphone, the microphone changes the sound wave to electrical wave which is further amplified by op-amp.
555 timer IC acts as mono-stable multi-vibrator then flip-flop changes the state of output relay on every two-clap sound. This can be used to turn ON/OFF lights and fans. Circuit activates upon two-clap sound and stays activated until another sound triggers the circuit.
Specifications:
- Supply 12V DC @ 60mA
- On board preset to set the sensitivity
- On board LED to indicate the Relay on/off state
- On board Microphone
- Relay switch 5Amps, 110V-230V
Schematic
Parts List
Please follow and like us:
PCB
did this project worked and tested ?
This project is tested and working properly
thanks. but why is it that the schematic and the list of materials doesn’t sum up? the IC part.
all projects send me at my email
hey! thanks ! ^_^
hello, it has been a good schematic diagram and i tried and worked very well. thanks so interesting and lovely.
Can I get these several products? I will pay for it.
Are y still wanting some electrical items made if so emakl me at needsumpeace1@gmail.com and let me know what u want and we can start makeing those up
I want to use through hole components instead. Of. Surface mount device . So what should I use instead of bc847? ? Plz help.
This transistor is also available in trough hole package (SOT54) – check the datasheet here: http://www.nxp.com/documents/data_sheet/BC847_BC547_SER.pdf
I’m interested in Electronic circuit design, but just a beginner. I need someone that can teach me programming of microcontrollers and Arduino