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This is great, keep the questions/comments coming. ~Justine
When holding the connector and wires as shown in RoboWheel manual page 2 step 3, tab up, from left to right colors are
Pos 6 Empty, Pos 5 Empty, Pos 4 Grey Encoder B, Pos 3 White Encoder A, Pos 2 Red 5V Out, Pos 1 Black GND
If using Hall Sensors instead, colors are
Pos 6 Empty, Pos 5 Yellow Hall C, Pos 4 Blue Hall B, Pos 3 Green Hall A, Pos 2 Red 5V Out, Pos 1 Black GND
The hall wires are the same color as the U,V,W Phase wires, but smaller.
If extending encoder wires with grey ribbon cable, convention dictates the single wire with red tracer connects to position 1. In this case, position 1 mates with the black GND wire from RoboWheel. This and the back and forth numbering pattern catch a lot of newbies. They incorrectly assume IDC numbering is like DIP numbering.
If you were to edit the RoboWheel Manual, a useful feature would be if the bolt pattern Figure 6 on Page 5 were rendered actual size in the printed manual and had crosshairs at the boltholes so that it may be cutout and used as a drill template. NearZero manual page 9 could use the same treatment on the top view image.
RoboWheel radial and axial load ratings would be a handy spec to have noted. You know someone will make a hoverboard, they should know if it will hold them.
Despite these minor omissions, you've made useful clear complete documentation. The FIRST Robotics Competition high school teams I mentor would have no trouble making use of this. I would too if only I could remember where I left my wire strippers.
Looking forward to hearing about the parallel elastic arm and PF-1. Consider this an inquiry.
Edit: The cable covering from the center of one RoboWheel had worked itself out of its hole during shipping. It goes back with a bit of massage. Looks like the deep cut foam packing is just a bit too deep in the center. Equal number of packing foam layers top and bottom might resolve that.