Product overview
The RadioLink AM32-70A combines four electronic speed controllers in one unit for UAV propulsion systems. Its AM32 open-source architecture uses an AT421 32-bit microcontroller, with power circuitry designed for high-current motor control. Intended applications include racing aircraft, aerial photography platforms and industrial modifications, with a stated aircraft size range of 3–22 inches. It supports multiple sensorless brushless motor specifications and accepts PWM, Dshot300 and Dshot600 throttle signals, giving integrators several control options when assembling a propulsion system.
The controller measures 52 × 48 mm, has a 30 × 30 mm mounting hole pattern and weighs 35.3g, defining its physical integration requirements. Electrical input is 2–6S lithium battery power. Continuous current is rated at 70A, while the 85A momentary rating is limited to five seconds; current sensor output is 7.5 mV/A. UART and TTL serial are supported, with CAN described as an interface upgrade. The supplied package contains one ESC, one connecting cable, four vibration-damping balls and one packaging bag.
Specifications
| Specification | Value & conditions |
|---|---|
| Product identity | RadioLink AM32-70A four-in-one electronic speed controller |
| Firmware architecture | AM32 open-source architecture |
| Microcontroller | AM32 AT421 32-bit MCU |
| Intended applications | Racing, aerial photography and industrial modifications |
| Aircraft size range | 3–22-inch aircraft |
| Battery support | 2–6SLithium battery input. |
| Continuous current rating | 70AContinuous current. |
| Momentary current rating | 85A5 seconds. |
| Current sensor output | 7.5 mV/A |
| Serial interfaces | UART and TTL serial |
| CAN interface | CAN interface upgrade supportedInterface upgrade. |
| Throttle protocols | PWM, Dshot300 and Dshot600 |
| Motor support | Multiple specifications of sensorless brushless motors |
| Product dimensions | 52 × 48 mm |
| Mounting hole pattern | 30 × 30 mm |
| Weight | 35.3g |
| Included controller | 1 × RadioLink AM32-70A ESCPackage contents. |
| Included connecting cable | 1 × connecting cablePackage contents. |
| Included vibration dampers | 4 × FPV racing drone vibration-damping ballsPackage contents. |
| Included packaging | 1 × packaging bagPackage contents. |
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