RedHobby AM32 40A Bidirectional Brushless ESC for 2-4S LiPo - 6V 2A BEC Open-Source Speed Controller for RC Drones and Vehicles
The RedHobby AM32 40A Bidirectional Brushless Electronic Speed Controller is an open-source firmware-driven speed controller rated at 40A continuous, positioned between the 30A and 60A variants in the RedHobby AM32 ESC range, and well-suited for RC drones and ground vehicles where mid-to-high current demands, bidirectional motor control, and AM32 firmware configurability are primary selection criteria. Running the AM32 open-source firmware, this ESC supports DSHOT digital signal protocols, RPM telemetry output, and full parameter configuration through the AM32 Configurator PC interface, covering motor timing advance, demag compensation, active freewheeling, and throttle endpoint calibration on a per-unit basis. The firmware's active community development cycle ensures ongoing updates and feature additions without dependence on a proprietary manufacturer's firmware release schedule, giving builders access to current-generation ESC features across the supported RC drone and vehicle platform range.
The bidirectional motor control capability enables electronic forward and reverse motor rotation without manual phase-swap rewiring, making this ESC directly applicable to RC ground vehicles, surface boats, and other platforms where reversing drive direction through the transmitter is a standard operational requirement alongside the drone and multirotor applications where AM32 firmware and DSHOT protocol support are the primary selection drivers. The integrated 6V / 2A BEC output delivers regulated power to the receiver rail at a voltage level suitable for receivers paired with higher-voltage digital servos and onboard FPV or auxiliary electronics, without requiring a separate BEC module in most RC drone and vehicle builds. At 40A continuous on a 2-4S LiPo input spanning 7.4V to 14.8V, this ESC covers the sustained current demands of mid-size brushless motors across drone, car, boat, and multi-platform builds where the 30A class falls short of the motor's sustained draw and the 60A class represents unnecessary overhead for the application.
Key Features
- Firmware Platform: AM32 open-source brushless ESC firmware with full PC-based configuration via AM32 Configurator
- Continuous Current Rating: 40A continuous with short-burst headroom for high-throttle demand across RC drone and vehicle applications
- Battery Compatibility: 2-4S LiPo (7.4V - 14.8V) for flexible voltage selection across drone and vehicle build configurations
- Bidirectional Motor Control: Electronic forward and reverse rotation without manual phase-swap rewiring for RC vehicle and boat reverse drive capability
- Integrated 6V BEC Output: 6V / 2A regulated BEC powers receivers, higher-voltage digital servos, and onboard FPV or auxiliary electronics without a separate regulator
- Digital Signal Protocol Support: DSHOT150, DSHOT300, and DSHOT600 alongside OneShot125, OneShot42, and standard PWM for broad drone and vehicle flight and drive controller compatibility
- RPM Telemetry Output: Supports Betaflight and ArduPilot RPM filtering and per-motor health monitoring with compatible flight and drive controllers
- AM32 Configurator Support: Full per-unit adjustment of motor timing, demag compensation, active freewheeling, DSHOT protocol, and throttle calibration via PC interface
- Active Freewheeling: Reduces heat accumulation and improves power efficiency during partial-throttle and throttle-transition phases
- Demag Compensation: Minimises motor desync and low-throttle stutter for smooth, linear power delivery across the full throttle range
- Open-Source Architecture: Community-developed AM32 firmware with active update cycle, extended configurability, and no proprietary firmware dependency
- Multi-Platform Compatibility: Suitable for RC drones, multirotor builds, ground vehicles, and surface platforms requiring AM32 firmware and bidirectional motor control
- Low-Voltage Protection: Configurable per-cell cutoff prevents LiPo over-discharge across 2S to 4S cell configurations
- Thermal Shutdown: Automatic over-temperature protection safeguards the ESC and motor under sustained 40A high-load operation
Applications
- RC drones and quadrotors running Betaflight or ArduPilot with DSHOT600 and RPM telemetry requirements on 3S - 4S power, requiring 40A per-motor current headroom
- RC cars and ground vehicles requiring bidirectional brushless motor control with AM32 firmware configurability and DSHOT protocol support on 2-4S LiPo
- RC surface boats and watercraft requiring forward-reverse ESC operation with AM32 open-source firmware on 2-4S LiPo power
- Fixed-wing RC aircraft requiring AM32 firmware flexibility, 6V digital servo BEC output, and 40A sustained current headroom on 2-4S LiPo
- Multi-platform RC builders requiring a single 40A AM32 ESC deployable across aerial, ground, and marine applications with bidirectional control
- RC builders upgrading from 30A AM32 ESCs to higher-current 40A variants without changing firmware ecosystem or configurator toolchain.
Package List:
