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I have a 28mm wide dc motor in the device pictured here. I have removed the control board of the device and am looking to replace it with an external driver board with RC PWM inputs for control. The motor will remain stationary for the most part and turn forward or reverse at low RPM when it receives signal from the RC channel. The system is powered by a small 7.4V 300mAh lipo.

I am having trouble determining the proper driver board type for it. An ESC won't work because it's not designed for low RPM usage. Through many Google searches I've learned an H Bridge driver won't work.

The three inputs on the motor are labeled U V W on the original controller board (picture attached). I'm assuming this is a brushless motor with hall sensors to assist in the low RPM operation. I can't remove the motor and diassemble to check.

I'm asking for some insight into the proper method to drive this thing both forward and reverse at low RPM. Preferably a ready made board. Any ideas?

28mm motor

control board with U V W inputs

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  • \$\begingroup\$ Check out TI DRV10974 BLDC motor controller. \$\endgroup\$ – Chris Wenzlick May 4 '20 at 22:14

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