circuits

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electrotime

New Member

• Dec 31, 2008

• #1

transmitter and receiver for text message

I need to send the text message of my computer to a remote device via wireless medium. I have to make both transmitter and 'text message receiving device'. How can i start my project?

 

Last edited: Dec 31, 2008

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Diver300

Well-Known Member

Most Helpful Member

• Dec 31, 2008

• #2

Is it short range? If so you need a transmitter and a receiver module at each end and a microcontroller.

If you want longer range, you can send and receive SMS messages over the GSM network with the GSM modules from Telit Telit or Siemens or Motorola

 

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bassnut

New Member

• Dec 31, 2008

• #3

Using a wireless transciever like this from Easyradio (there are many other manufacturers), you dont even need a microprocessor, just a MAX232 level convertor. Its RS232 in and out, easy.

 

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electrotime

New Member

• Jan 1, 2009

• #4

thanks

thanks diver300 and bassnut...
and bassnut i will like to know more about max232 level converter,could i get more help from u on this?

 

mramos1

Active Member

• Jan 1, 2009

• #5

The max232 will convert the uarts higher plus and minus voltage/serial data to 0-5v form so you to decode it with you lower voltage circuit and microcontroller.