LiteWing is an open-source ESP32-S3 based drone designed for experimentation, learning, and custom drone development. By default, LiteWing runs modified Crazyflie firmware, but it can also be configured using Betaflight, one of the most popular flight control platforms used in FPV and racing drones.
In this LiteWing ESP32 Betaflight Drone project, we configure the LiteWing drone using Betaflight firmware, transforming it into a fully tunable and performance-optimized drone. With Betaflight integration, users gain access to advanced features such as PID tuning, flight modes, receiver configuration, motor setup, and real-time flight diagnostics.
This ESP32 Betaflight setup guide walks through the complete process of flashing firmware, configuring hardware, and tuning flight performance. Once completed, your LiteWing drone becomes highly customizable and suitable for both beginners and advanced drone developers.
What You’ll Learn
- Flashing ESP32 Betaflight firmware
- Setting up Betaflight Configurator
- GPIO pin configuration using CLI
- IMU orientation correction
- ExpressLRS receiver setup
- Flight mode configuration
- PID tuning for brushed motors
- Blackbox flight data analysis
Hardware & Software Requirements
Hardware
- LiteWing ESP32-S3 Drone
- ExpressLRS (ELRS) Receiver
- ELRS Transmitter (pre-bound)
- USB Data Cable
- LiPo Battery
Software
- Betaflight Configurator v10.10
- ESP32 Betaflight firmware binary
- Chrome or Edge browser for flashing
Step 1: Flash ESP32 Betaflight Firmware
Before configuration, the LiteWing drone must be flashed with ESP32 Betaflight firmware.
Process overview:
- Download ESP32-S3 firmware binary.
- Connect LiteWing via USB.
- Open the ESP web flashing tool.
- Select COM port and connect.
- Upload firmware at address
0x0000. - Program and wait for completion.
After flashing, the drone becomes compatible with Betaflight Configurator.
Step 2: Install Betaflight Configurator
Install Betaflight Configurator on your computer and enable:
Show All Serial Devices
Then connect the LiteWing drone using the detected COM port.
Step 3: Configure Hardware Pins
Default Betaflight pin mapping does not match LiteWing hardware.
Using the CLI tab, GPIO pins are reassigned to correctly control:
- Motors
- UART communication
- IMU sensors
- Battery monitoring
After entering CLI commands, save and reboot the drone.
Step 4: Correct IMU Orientation
If the 3D drone model moves incorrectly:
- Open Configuration Tab
- Go to Board & Sensor Alignment
- Set Gyro Alignment → CW 270°
This ensures accurate motion tracking and stable flight response.
Step 5: Enable Battery Voltage Monitoring
Configure onboard ADC monitoring:
- Voltage Source → Onboard ADC
- Scale → 10
- Divider → 1
- Multiplier → 2
This allows real-time battery monitoring inside Betaflight.
Step 6: Configure Motor Protocol
LiteWing uses brushed DC motors, so proper configuration is required:
- Motor Protocol → Brushed
- PWM Frequency → 8000 Hz
Save and reboot after applying settings.
Step 7: Setup ExpressLRS Receiver
ExpressLRS provides ultra-low latency and long-range communication.
Connections:
- Receiver TX → GPIO18
- Receiver RX → GPIO17
- 3.3V & GND → Power
Inside Betaflight:
- Enable Serial RX
- Receiver Mode → Serial Based
- Protocol → CRSF
Stick movement should now appear in the Receiver tab.
Step 8: Configure Flight Modes
Flight modes define drone behavior.
Recommended setup:
Assign transmitter switches and save configuration.
Step 9: PID Tuning
Default PID values are unsuitable for LiteWing due to:
- Lightweight frame
- Brushed motors
- Small propellers
- Compact structure
Apply optimized PID values and perform short test flights for stable performance.
Step 10: Blackbox Flight Data Logging
Blackbox records important flight parameters such as:
- Gyro data
- Motor output
- PID response
- Receiver input
After flight:
- Download logs from Betaflight
- Analyze using Blackbox Explorer
- Fine-tune performance
By integrating Betaflight with the LiteWing ESP32-S3 drone, you unlock professional-level drone tuning and diagnostics on an open-source platform. This setup converts LiteWing from a basic experimental drone into a fully configurable flight system suitable for learning FPV control, tuning algorithms, and embedded flight development.
This project is an excellent introduction to ESP32-based flight controllers, open-source drone firmware, and real-world flight tuning, making LiteWing a good starting point for students, developers, and drone enthusiasts exploring advanced UAV systems.
For more info : LiteWing ESP32 Drone Betaflight: Setup & Configuration Tutorial
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