JESC: Betaflight RPM Filter on BLHeli_S Hardware

Quadcopter flight performance is greatly improved by reducing motor noise in the gyro signal and by removing filter delay. Unfortunately these goals used to oppose each other: filter out more motor noise and you will get more delay.

Not any more! RPM Filtering allows Betaflight to place very narrow notch filters on the harmonics of your motors with surgical precision. Notch filters have infinite noise suppression at their center. This allows the Rpm Filter to completely remove motor noise from your FC with much less delay than we're used to. Learn more.

The JESC firmware is based on the open source project BLHeli_S and also open source. To enable dshot rpm telemetry you need to license the optional Telemetry Service. Each ESC requires one license. Purchase 4 licenses for a 4 in 1, a single one if you need to replace one single ESC. Or splurge on the 20 license discount package to equip multiple 4 in 1's.

Before ordering read the Install Instructions to verify that your setup is supported and to understand the install process. Please consult the FAQ if you have questions!