Telephone motor Controller


Posted on Jul 15, 2012

This Project is used to control a single phase Motor from any where in the world through the telephone. The circuit consists of a DTMF tone detector and a powerful 8 bit Microcontroller AT89S52. The Microcontroller senses the DTMF signal through the DTMF decoder IC MT8870 and it switch on/off and speed up/down the motor according to the user need. The circuit has an inbuilt Phone Ring sensor circuit and the system will take over the phone control if it was not taken manually for more than 5 rings.


Telephone motor Controller
Click here to download the full size of the above Circuit.

The DTMF decoder decodes the DTMF tones into digital signal and this signal was fed to the Microcontroller and according to this signal the microcontroller will control the Motor with help of the TRIAC The system is fully password protected so the user c




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Programmable frequency meter
The Star-Delta 3-phase Motor Starting Method
All Transmitter & Receiver schematics
Moisture Sensor Project
electronically designed siren
ir sensors
AC lights dimmer with triac
MK414 SW Receiver
IMPROVED TV COLOR WHEEL CONVERTER
2003 gmc savana instrument cluster illumination lights
Electric thermos temperature detection control circuit



Top