and me....This photo show's the Pass through board(s) installed in there proper orientation for external motor drivers (HIGH POWER motor controllers like Gecko's). In the photo belowthe external driver boards pass the dir/step/en signals to the green sockets as shown. The 1 and 2 pin JPC jumpers labled x-y-z-a step/dir and EN (enable) all pass there signal to their axis. Enable is linked (parallel) to all enable headers. I soldered headers to my board in red. The red jpc connectors locations can be used instead of the ext driver board adapters and the green connectors if needed. I do not know if the protoneer step/dir enable are active HIGH or active LOW. If someone could answer that, that would be great. As to the pass though boards so we can use the green connectors. I do not know if they are active high or active low if someone could answer that question it would be great.
I2C:
GROVE 2MM 4PIN CONN 10PACK) 1597-1082-ND 1597-1083-ND one is the vertical and the other is the 90 degree version. These are from digikey. these are 100% compatible with the grove connector for the I2C on the RPI hat. And they are sold from digikey in packs of 10 for $1.5 USD
JUST REMEMBER these are 2mm not 2.5mm like standard PERF board. they will fit standard perf board but you have to bend the pins a little.
Unknown headers?:
On the board there are 3 headers A4 A6 AND A7. What are these pins for?
On my board in the photo I have colored Black and Red showing all ground pins and high power +v pin. When the board is being used as a pass though with no on board motor drivers.
If a POLOLU board is being used then the pinouts for the motor connectors changes to a+ a- b+ b- I do knot the exact connection as I have not found that info. if anyone knows and or could post a photo sowing it that would be great.
