Hey! On the SoM module there are 4 pads for the JTAG. On the eval board, there are 4 pogo pins that are meant for connection to these pads. I can't find pogo pins that are small enough to work. It would appear that all of mil-max's pins have too large of a footprint to fit on the PCB in the required 2.5mm grid.
I used this one on a board:
Maximum Working Height 0.125" (3.18mm)
Recommended Working Height 0.098" (2.50mm)
Minimum Working Height 0.070" (1.78mm)
Mill-Max Manufacturing Corp. 0926-1-15-20-75-14-11-0
CONTACT SPRING LOADED T/H GOLD $0.71
A little bit more research I found one that's a bit smaller:
Initially I was a bit worried because of how close the pads are together, but it should be fine. Thanks!