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BeeRotor BLHeli_S BLS ESC 20A (Support Dshot)

By RCTimer ↗

The RCTimer BeeRotor BS20A is a BLHeli_S electronic speed controller rated at 20A continuous and 30A peak current. It supports Dshot, OneShot125, OneShot42 and Multishot, accepts 2~4S input, and has no BEC. Its dimensions are 24 x 13 x 3.6mm, with a cable-inclusive weight of 4.43g.

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ModelBeeRotor BLHeli_S BLS ESC 20A (Support Dshot), BS20A
Firmware targetBLHeli_S L_H_00
MicrocontrollerEFM8BB2 MCU, 48MHz
Power-stage architectureThree-phase MOSFET driver with hardware synchronous rectification
Firmware and supported protocolsBLHeli_S firmware; OneShot125, OneShot42 and Multishot supported
Dshot supportDshot supported

Product overview

The RCTimer BeeRotor BLHeli_S BLS ESC 20A (Support Dshot), model BS20A, is an electronic speed controller with an EFM8BB2 microcontroller operating at 48MHz. Its three-phase MOSFET driver uses hardware synchronous rectification, and its hardware includes 235uF high-capacitance ceramic capacitors. The controller runs BLHeli_S firmware with the L_H_00 target. Supported control protocols include OneShot125, OneShot42 and Multishot, alongside Dshot support. PWM resolution is 2048 steps, with an EN/PWM control signal.

The BS20A measures 24 x 13 x 3.6mm and weighs 4.43g including cable. It has a twisted-pair signal cable and accepts a 2~4S power input. The controller has no BEC. Its electrical ratings distinguish a continuous current of 20A from a peak current of 30A; the peak figure is therefore separate from its continuous rating. The compact dimensions describe the controller itself, while the stated weight explicitly includes its cable.

Specifications

SpecificationValue & conditions
ModelBeeRotor BLHeli_S BLS ESC 20A (Support Dshot), BS20A
Firmware targetBLHeli_S L_H_00
MicrocontrollerEFM8BB2 MCU, 48MHz
Power-stage architectureThree-phase MOSFET driver with hardware synchronous rectification
Firmware and supported protocolsBLHeli_S firmware; OneShot125, OneShot42 and Multishot supported
Dshot supportDshot supported
Capacitors235uF high-capacitance ceramic capacitors
Power input2~4S
BECNo BEC
PWM resolution and control signal2048 steps PWM resolution; EN/PWM control signal
Continuous current20A
Peak current30A
Signal cableTwisted-pair signal cable
Dimensions24 x 13 x 3.6mm
Weight4.43gIncluding cable.

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