While there are a couple of open-source brushless drivers already available, [neuromancer2701] created his own brushless motor controller on an Arduino shield.

$418 at shop.udoo.org UDOO Bolt V8 motherboard - $418.00 (roughly £330/AU$600) This one-of-a-kind motherboard from little-known startup UDOO combines an AMD Ryzen Embedded V1605B with an Arduino ...

Driving a brushless DC (gimbal) motor can be a pain in the transistors. [Ignas] has written up a nice article not only explaining how to do just this with an Arduino, but also explaining a little ...