BLheli_S
Open-source firmware for brushless electronic speed controllers (ESCs) used in drones and RC vehicles.
What is BLheli_S?
BLHeli is a firmware suite for brushless electronic speed controllers (ESCs) used in drones, RC helicopters, and planes. It provides precise motor control, enabling smooth throttle response and reliable performance for hobbyist and professional applications. The project includes multiple versions: BLHeli (8-bit open-source), BLHeli_S (8-bit optimized), and BLHeli_32 (32-bit closed-source).
Drone and RC vehicle enthusiasts, DIY builders, and embedded developers working on brushless motor control systems for multirotors, helicopters, and planes.
Developers choose BLHeli for its proven reliability, community-driven open-source versions, and specialized firmware variants optimized for different motor types and performance requirements, supported by comprehensive configuration tools.
Overview
BLHeli for brushless ESC firmware
Use Cases
Best For
- Building custom drone ESCs with open-source firmware
- Retrofitting brushless motors in RC helicopters and planes
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