Little Bee 20A-S BLHeli_S ESC with OneShot125 & Damped Light (2-4S)

These new LittleBee BLHeli_S 20amp esc's are some of the new generation of LittleBee esc's that feature the BLHeli_S firmware. The hardware and software advancements in BLHeli_S are responsible for an ultra smooth throttle response, which ultimately translates into the smoothest handling flying experience to date.

The Littlebee 20A-S esc's have there own didicated Driver Chip with the BLHeli_S compatable bootloader, and also come with BL-Heli_S pre installed!

What is BLHeli_S?

• BLHeli_S delivers a throttle response that is Smooth as Silk, and the main factor contributing to this, is that it uses hardware to generate motor PWM. Two MCUs support this for BLHeli_S, namely the BusyBee1 at 24MHz (EFM8BB10F8) and the BusyBee2 at 48MHz (EFM8BB21F16).
• BLHeli_S will have the same good Sync holding properties as base BLHeli. Maybe even better.
• BLHeli_S generally does Startup better than base BLHeli.
• BLHeli_S does damped light. Only.
• BLHeli_S has motor PWM that is Synchronous to the MCU master clock, as it is generated by hardware. This makes the motor Silent.
• BLHeli_S has very Small throttle Steps. The resolution varies between hardware configurations (MCU clock speed and driver type), and is between a nominal 512 steps and 2048 steps.
• BLHeli_S supports very high motor Speeds. A BB1 MCU will support 350k erpm, and the limit of the BB2 is not yet known, so the code is set to limit at 500k erpm.
• BLHeli_S supports regular 1-2ms input signal, as well as Oneshot125, Oneshot42 and Multishot. Autodetected when the ESC sees an input signal.