open source hub motor

An open-source hub motor is a type of electric motor integrated into the wheel hub (hence “hub motor”) with publicly available design files, schematics, and software, allowing anyone to modify, build, or improve upon it. These motors are popular in e-bikes, scooters, electric vehicles (EVs), and robotics due to their compact design and direct drive capabilities.

Key Features of Open-Source Hub Motors:
1. Transparent Design – CAD files, PCB schematics, and firmware are freely available.
2. Customizable – Users can tweak power ratings, winding configurations, and control algorithms.
3. Community-Driven – Often developed collaboratively via platforms like GitHub or forums.
4. Compatibility – Works with open-source motor controllers (e.g., VESC, ODrive).

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Popular Open-Source Hub Motor Projects:
1. [Endless Sphere Hub Motors](https://endless-sphere.com/forums/)
– Community-driven hub motor modifications & DIY builds.
– Many users share their custom designs for high-power applications.

2. [VESC-Based Hub Motor Control](https://vesc-project.com/)
– Open-source motor controller (VESC) supports sensored/sensorless hub motors.
– Used in e-skateboards, e-bikes, and drones.

3. [ODrive for High-Performance Hub Motors](https://odriverobotics.com/)
– Open-source high-power motor controller for precision control.
– Supports FOC (Field-Oriented Control) for smooth operation.

4. [MIT’s In-Wheel Motor Designs](http://meche.mit.edu/)
– Research-based open designs for lightweight EV applications.

5. [OpenInverter for EV Hub Motors](https://openinverter.org/)
– Open-source inverter projects compatible with custom hub motors.

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Advantages of Open-Source Hub Motors:
✅ Cost-Effective – Avoid proprietary vendor lock-in.
✅ Hackable – Modify firmware (e.g., torque profiles, regen braking).
✅ Scalable – Adapt for different voltages/power levels.
✅ Educational – Great for engers & hobbyists learning motor control.

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Challenges:
⚠️ Requires technical knowledge (motor theory, electronics).
⚠️ Limited commercial support vs. proprietary motors (e.g., Bosch, B