I’m attempting to use the RAK2287 Pi hat with a device other than Raspberry Pi but unfortunately online documentation does not answer all the questions I have. Namely I’d like to find out the following:
- Are the GPIO, SPI, and UART signals coming out of the Pi hat translated to 5V or are they the original 3V3 of the concentrator?
- Is the on-board 5V->3V3 regulator linear or switching (i.e. what kind of power losses should I expect?)