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ah sorry.
I see, it is the AT+CPOWD=1 or =0 command, it turns off the connection, but red light stays on on the phone, and after ten seconds or so the phone restarts and the connection comes back up.
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sorry, how can i send any AT command?
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I just realized that the serial connection doesn't need the 3V. It is just ground, Tx and Rx right?
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when you use a mosfet to swith the gsm module on and off, and you use a serial connection to control the gsm with Rx,Tx, V and GND, would it be possible to use the V and GND from the serial connection to also turn the gsm on?
Since they are on and off at the same time.. That would save you connections to the board
I would like some code to run as soon as light comes above a certain level.
But to save battery I would like to do that with setWatch, is that possible?