I've discovered that if you solder headers onto D8/D9/D10/5v/GND on the Nyboard for future '
sonar' sensor use, the headers interfere with part of the body juuust enough that the mounting holes no longer align.
I'll try and shave a bit off with a dremel.
(yes, I know I'm missing the header on D8 in the pics below)
If you solder them into the other side, they don't clear a Raspberry Pi. I could bend them outwards though, similar to the FTDI connector, but it's a super tight fit between the frame and the camera connector on a Pi3.