HTCC-AB02S - GPS on/off by the mos-fet (GPIO14)

Good morning, so I’m in a bit of a rush as I need to fit one of my ABS-02s cubecell to a cow tracker which is heading off on Friday. I’m having trouble with lowpower state using to much battery power.

Searching I discovered a thread that the GPS can be powered off using GPIO14, supposedly.

Doesn’t seem to be working!

https://www.thethingsnetwork.org/forum/t/heltec-cubecell-part-1/30684/140

The code im using to control the pin.

#define pin GPIO14
// setup
pinMode(pin, OUTPUT_PULLUP);
digitalWrite(pin, HIGH); //Off
digitalWrite(pin, LOW);

If I then try a use the GPS with the pin pulled HIGH is still works.

Do I need to end and restart the serial commination to the GPS?

Does ending that before going into lowpower mode save power? and restarting on wake?

Cheers, James

To answer my own question ending the serial connection to the GPS on sleep and restarting solved the battery drain problem.

Cheers,