The LittleBee Spring 30A ESC is a high-efficiency electronic speed controller designed for brushless motors in FPV drones, RC aircraft, and multirotor systems. Powered by the SILABS EFM8BB21F16 MCU running at 48MHz, this ESC delivers ultra-fast processing, smooth throttle response, and reliable performance for high-speed and precision control applications.

With support for advanced signal protocols such as DSHOT, Multishot, Oneshot125, and Oneshot42, this ESC ensures low latency and highly responsive motor control. It is ideal for racing drones, freestyle quadcopters, and DIY UAV builds where speed, efficiency, and stability are critical.

The ESC uses high-performance N-channel MOSFETs on both high and low sides, combined with a dedicated driver chip for fast switching and reduced heat generation. Designed to operate with 2S to 6S LiPo batteries, it provides 30A continuous current and up to 35A burst current, ensuring consistent performance under load.

Note: This ESC does not include a BEC, so an external power source is required for the flight controller or receiver.

Features:

• High-performance 30A brushless ESC for drones and RC applications

• Supports 2S to 6S LiPo battery input

• BLHeli_S firmware with bootloader for easy configuration

• Compatible with DSHOT, Multishot, Oneshot125, and Oneshot42 protocols

• Fast 48MHz SILABS EFM8BB21F16 microcontroller

• N-channel MOSFETs on both high and low sides for efficiency

• Dedicated driver chip for ultra-fast switching

• Smooth and precise throttle response

• Supports muted mode for quiet operation

• Compact and lightweight design for FPV builds

• Reliable performance for racing and freestyle drones

• No BEC output (requires external power supply)

Specifications:

• Model: LittleBee Spring ESC

• Firmware: BLHeli_S

• Input Voltage: 2–6S LiPo

• Continuous Current: 30A

• Burst Current: 35A (up to 10 seconds)

• BEC Output: None

• Main IC: SILABS EFM8BB21F16 (48MHz)

• MOSFET Type: N-channel (high & low side)

• Supported Protocols: DSHOT, Multishot, Oneshot125, Oneshot42

• Size: 35 × 17 mm

• Weight: Approx. 7g (including wires)

How to Use:

• Connect ESC power leads to a 2S–6S LiPo battery

• Connect the three motor wires to the brushless motor

• Attach signal wire to the flight controller ESC output pin

• Configure ESC settings using BLHeli_S software if needed

• Select DSHOT protocol for best performance and response

• Use an external BEC to power the flight controller

• Ensure proper cooling and airflow during operation

• Calibrate ESC if using PWM-based control modes

Applications:

• FPV racing drones and freestyle quadcopters

• RC airplanes and helicopters

• Multirotor UAV systems

• DIY drone and robotics projects

• Brushless motor control systems

• High-speed RC vehicle applications

• Aerial photography drone setups

• Embedded motor control projects

Package Includes:

• 1 × LittleBee Spring 30A BLHeli_S ESC (with cable)

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