Product overview
The RadioLink AM32-70A is a four-in-one electronic speed controller intended for high-performance UAV propulsion systems. Its stated applications include racing aircraft, aerial photography platforms and industrial modifications, with an intended aircraft size range of 3–22 inches. The controller uses the AM32 open-source architecture and an AM32 AT421 32-bit MCU. 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 around a flight controller.
The hardware measures 52 × 48 mm, weighs 35.3g and uses a 30 × 30 mm mounting pattern, providing concrete dimensions for installation planning. Electrical integration requires a 2–6S lithium battery supply. The stated continuous current is 70A, while the 85A peak rating is limited to five seconds; current-sensing output is 7.5 mV/A. UART and TTL serial support are listed alongside a CAN interface upgrade option. The supplied package contains one ESC, one connection cable, four vibration damping balls and one packaging bag.
Specifications
| Specification | Value & conditions |
|---|---|
| Manufacturer and model | RadioLink AM32-70A |
| Product type | Four-in-one electronic speed controller |
| Firmware architecture | AM32 open-source architecture |
| Microcontroller | AM32 AT421 32-bit MCU |
| Intended aircraft size range | 3–22-inch aircraft |
| Battery support | 2–6SLithium battery input. |
| Continuous current | 70AContinuous operation. |
| Peak current | 85A5-second duration. |
| Current-sensing output | 7.5 mV/A |
| Serial interfaces | UART and TTL serial support |
| CAN interface | CAN interface upgrade supportedInterface upgrade. |
| Throttle protocols | PWM, Dshot300, Dshot600 |
| Motor type | Multiple specifications of sensorless brushless motors |
| Dimensions | 52 × 48 mm |
| Mounting pattern | 30 × 30 mm |
| Weight | 35.3g |
| ESC quantity | 1 × RadioLink AM32-70A ESCIncluded equipment. |
| Connection cable | 1 × connection cableIncluded equipment. |
| Vibration damping accessories | 4 × FPV aircraft vibration damping ballsIncluded equipment. |
| Packaging | 1 × packaging bagIncluded equipment. |
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