It’s a possibility I suppose.
It would make it possible to use those pogo pins, but I’m not sure it’s worth it since:
boards would be further apart (which takes up more space)
sd card would stick out, making it longer (which would take up more space)
That sd card holder looks like it would hold the sd card less securely, which could be a problem.
The mill-max pogo pins are 40-80 cents each, which I think is more expensive than my solution.
For now I would consider this the backup plan.
Other possibilities include using flexible PCBs or a flex-cable with connectors to connect the two boards. The footprint on the teensy4 was meant for a flex-cable connector after all.
Its a cable connect like in the pic you posted. the upside to the flex cable is it would allow the boards to be closer than if using pogo pins. thus allowing a thinner profile. Also it might allow use of spring pins on the pads for pins 24 to 33, meaning more pins for other uses.
Now I just need to find my teensy 4s I have. Seem to have misplaced the box my teensy 4 project was in.
That one is a little tricky. It’s mostly compatible, but the range selection register is not.
I’m not sure if there is an easy way for ProffieOS to detect this and adapt or not, but as the code is written right now, it won’t work well.
How are things progressing with the testing machine for the TeensySaber V4. Can’t wait to see the results and try one out. Most of all thank you for all the hard work you have put into the TeensySaber version and the Proffie boards.
