How to Interface DTMF MT8870 decoder to microcontroller ?

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nitinpatil

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Dear all,

I got so many circuits for DTMF but not sure which is in working condition, so any 1 can tell me right circuit because it help me lot and saves my time.

Please help me because i have to complete it as soon...

Thanking you all in advance
 

My total ckt is that i interface dtmf to micro-controller and then this controller to 3 phase motor,

The application is that i want to operate motor by mobile so that it is usable in irrigation system for ON-OFF motor.
 

Yes i got your point but which datasheet i have to refer ?
Because which 1 is run perfectly, their i confuse.

Also I have problem regarding the connection of 3-phase motor to micron controller,
I thought i just use RELAY and operate the contactor of 3-phase motor, making if OFF and ON,
Also I am thinking of using TRIAC in place of RELAY, so it is good or it may have problem..?

Please reply me if any 1 have practically knowledge of it.

Thanking you..!!!
 

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