adafruit ultimate gps hat

[MarkHaysHarris777]

The UART should be no problem, but PPS support you have to do some work, check which pin is used here first. I think someone added PPS support to a Pine a while ago (use search). Basically you have to add the devicetree entry defining the PPS pin and add the PPS driver to your linux kernel.

... check !!  in addition you may have to add a pull-up  or  pull-down  resistor to the hat.  be careful.