sms to control devices

[SOUBHIK KUMAR DEY]

Dear Sir,

 

I am trying to make a circuit that can be used to control appliances by sms. I have connected the Rx PIN of SIM900 module to Tx PIN of Atmega 8 and Tx pin of SIM900 to Rx PIN of Atmega 8.

 

Can you please give me the PROGRAM SOURCE CODE in C to burn in Atmega 8. And which ports of Atmega 8 should I connect to Relay driver circuit? I want to control 4 appliances like bulb, fan, etc.

 

I have heard that if I want to connect many appliances then I can use PIN 23 (PC0/ADC0) to connect to Relay driver IC ULN2803, and then the IC shall be connected to the relay circuit.

In that case what should be the relevant PROGRAM and what pins of Atmega 8 and IC should I use?

 

Please Sir give me the source code in both the cases

1. without IC ULN2803

2.using IC ULN2803

 

Thanks and Regards,

Soubhik.

 

[Shashank Rao.C]

hi Soubhik,

    

I think there is no special coding for with driver ic and without driver ic. Actually in the programing point of view there is no relation between driver ic and coding. coding is done only for mcu.

 

 

[SOUBHIK KUMAR DEY]

Thanx Shashsank,

Can u please provide me the code in C? And what ports should I use from Atmega 8?

Thnx………

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