Switch 5V with GPIO

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1

wanting to switch the 5V supply voltage to a RockBLOCK [9603] with a adafruit feather M0 digital output. the aim is conserving power, only need to transmit data seldomly. any ideas?

2

Hi David,

The simplest way would be to power the RockBLOCK via a MOSFET controlled by the feather. The RockBLOCK 9603 has a sleep mode that is enabled by pulling a pin to ground. This would be an easy option as well, and perhaps better than removing power altogether.

3

Would you happen to have a diagram and recommended MOSFET?

4

Check out this guide:
https://itp.nyu.edu/physcomp/labs/motors-and-transistors/using-a-transistor-to-control-high-current-loads-with-an-arduino/