This is just a simple mount for the green meanie (the green solar controller from Carvepower) to attach to a backpack using straps. This is so that OneWheel riders who want to "Charge and Ride" can hang this controller off a backpack instead of inside a backpack which will cause it to overheat.

The holes for screws are 4mm in diameter and I use #8 x 1.4 cm screws to attach the mount to the controller.

For "Charge and Ride", I also recommend the XLR port protector: https://www.thingiverse.com/thing:2902267