Product overview
The RCTimer BeeRotor BLHeli_S Dshot ESC 20A is an electronic speed controller built around an EFM8BB2 microcontroller operating at 48MHz. Its power-stage architecture uses a three-phase MOSFET driver with hardware synchronous rectification, alongside 235uF ceramic capacitors. The controller runs BLHeli_S firmware identified as L_H_00 and supports Oneshot125, Oneshot42 and Multishot. Control specifications include 2048-step PWM resolution and an EN/PWM control signal. Its current ratings distinguish 20A continuous operation from a 30A peak.
The ESC has a compact physical envelope measuring 24 x 13 x 3.6mm. Its weight is 4.43g including cable, so the cable is included in that mass figure. A twisted-pair arrangement is used for the signal cable. These dimensions and the cable-inclusive weight define its physical integration characteristics. Electrical input is 2~4S, and the controller has no BEC. The 30A rating is a peak value; the continuous current rating remains 20A.
Specifications
| Specification | Value & conditions |
|---|---|
| Manufacturer and model | RCTimer BeeRotor BLHeli_S Dshot ESC 20A; product identifier DSHOT20A |
| Firmware identifier | BLHeli_S L_H_00 |
| Microcontroller | EFM8BB2 MCU, 48MHz |
| Power-stage architecture | Three-phase MOSFET driver with hardware synchronous rectification |
| Supported control protocols | Oneshot125, Oneshot42 and Multishot |
| Capacitors | 235uF ceramic capacitors |
| Power input | 2~4S |
| BEC | No BEC |
| PWM resolution and control signal | 2048 steps; EN/PWM control signal |
| Continuous current rating | 20AContinuous current |
| Peak current rating | 30APeak current |
| Signal cable | Twisted-pair |
| Dimensions | 24 x 13 x 3.6mm |
| Weight | 4.43gIncluding cable |
