ESCs & Motors

Many PX4 drones use brushless motors that are driven by the flight controller via an Electronic Speed Controller (ESC) (the ESC converts a signal from the flight controller to an appropriate level of power delivered to the motor).

PX4 supports ESCs that take a PWM input, ESCs that use the ESC OneShot standard, DShot, UAVCAN ESCs, PCA9685 ESC (via I2C), and some UART ESCs (from Yuneec).

For more information see:

• PWM ESCs and Servos
• DShot
• UAVCAN ESCs
• ESC Calibration
• ESC Firmware and Protocols Overview (opens new window) (oscarliang.com)