Currently I am designing a custom board based on G120 module. The board has wired ethernet, RFiD reader and flash memory and a display.
To be future proof I’ll also add a bluetooth module (BLE) but this module should’t be active by default. I want to turn it on and off from within the software. This is the point where I need some advise.
The ble module is using 3.3v as its power source so I was thinking to use a GPIO pin to power it, is this the right way to do it or should it be done differently?