Best of all, the entire package will only run you about $20 in parts–including the position sensor! “Another BLDC motor controller?” you might think. “Surely, I’ve seen this before“.
The core of the project is a brushless DC motor originally intended a hydrofoil which is capable of providing 11 pounds (about 5 kg) of thrust. [Braden] has integrated it into a 3D-printed fin ...
BLDC motors are often specified to maximize efficiency and torque density, and open rotor designs can further extend these capabilities.
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