LightFin
1S Integrated Flight Controller for Differential Thrust Fixed-Wing and Lightweight Aircraft
Overview
LightFin is a compact flight controller designed for INAV firmware, integrating AT32F435 MCU and ELRS wireless link, suitable for 1S powered lightweight aircraft, especially differential thrust wingless fixed-wing aircraft (such as paper airplane conversions).
Core Features
- Ultra-Compact - PCB size only 30.2mm × 14.6mm, extremely lightweight
- Integrated Design - Onboard ELRS receiver, no external modules needed
- Complete Sensors - Integrated IMU, barometer, magnetometer for stable flight
- 1S Optimized - Power management solution designed for lightweight aircraft
Hardware Specifications
| Component | Specification | Description |
|---|---|---|
| MCU | AT32F435CGU7 | QFN48 package, multiple UART/PWM |
| Wireless Link | ESP8285 + SX1280 | Onboard ELRS 2.4GHz, WiFi dual antenna |
| IMU | LSM6DSOWTR | 6-axis accelerometer/gyroscope |
| Magnetometer | QMC5883P | I2C interface, address 0x2C |
| Barometer | SPL06-001 | I2C interface, address 0x77 |
| Operating Voltage | 3.0V - 4.2V | 1S LiPo battery powered |
Suitable Aircraft
- Differential Thrust Fixed-Wing - Dual motor differential control, no control surfaces needed
- Paper Airplane Conversion - Lightweight fixed-wing platform
- 1S Lightweight Aircraft - Suitable for small indoor/outdoor flyers
Core Advantages
- Differential Control - Dual motor differential steering simplifies mechanical structure
- Integrated ELRS - No external receiver needed, reduces wiring and weight
- Open Source Firmware - Based on INAV with rich community support
- Easy to Debug - Supports INAV Configurator graphical configuration
User Manual
Technical Support
For more technical support or product inquiries, please contact us through:
- GitHub: HumpbackLab
- QQ Group: 763833895
- Bilibili: HumpbackLab