I am looking for a switch that i can control from a micro controller (espruino, 3.3v) to turn a GSM module (GSM800L) on and off.
The GSM module runs on 5v and takes too much power (2A peak) for the controller so it needs its own battery. But I want it off normally and only occasionally I want to switch it on to send an sms with the microcontroller.
There must be a simple way to just connect and disconnect the phones battery. When connected the module automatically connects to the network so that is all I need. The best I can come up with is some MOSFET based solution like this:
https://www.sparkfun.com/products/11214
Am I overlooking something obvious?
Thanks!
The GSM module runs on 5v and takes too much power (2A peak) for the controller so it needs its own battery. But I want it off normally and only occasionally I want to switch it on to send an sms with the microcontroller.
There must be a simple way to just connect and disconnect the phones battery. When connected the module automatically connects to the network so that is all I need. The best I can come up with is some MOSFET based solution like this:
https://www.sparkfun.com/products/11214
Am I overlooking something obvious?
Thanks!