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Hi,
First thanx for your reply zorro.
If I can increase speed over the 1200 bps using Audio FSK how I implement it. Will I want to use more than two tones for that. Can u explain it little bit more or is there any references?
(I believe that these techniques which u said can be implemented using...
Hi,
I want to modulate digital data into audio. Then communicate it through any audio channel and demodulate at the destination from audio to data again. To do this I hope to use computer sound card and software modem without using any hardware implementation. In the internet, I found that this...
Fist thanks for your reply
I didn't use serial cable to connect these two divices and thy are connected using copper path of PCB and I'm sure that it is correct. However I have used same power supply to both of them and supply flow through the 500mA fuse and it works fine.
I connected MCU to...
Hi All,
I want to interface SIM900 module with 16F877A micro-controller to send some data to my server using GPRS. When I programed MCU to send some AT simple commands like ATD to module through serial interface, it works fine. Although I can send commands to module I can't get any out from...
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