v1.2

Logo

Official project logo is introduced:

Main updates

• Mode for automatic flights: AUTO.
• Added Python library (pyflix).
• Continuous gyro bias estimation algorithm (much better yaw stability, no dedicated gyroscope calibration step is needed).
• Normal arming/disarming logic (like in PX4 and ArduPilot).
• Interrupt-based main loop (doesn't eat the CPU).
• New commands: sys (show system info), wifi (show Wi-Fi info).
• Support the MPU-6050 IMU.
• Improved RC calibration.
• Major refactoring and simplification of the code.

Events

July 2025, RoboCamp:

October 2025, School 548 course:

v1.1

Summary: slight frame updates and major software updates.

Hardware updates

• More reliable motor holders.
• Larger stiffening ribs in motor holders attachment points.

Software updates

• Parameters subsystem is implemented.
• MAVLink console support.
• Support for the ICM-20948 IMU.
• New CLI commands (time, reboot) and enhancements.
• Implement several RC fail-saves.
• Bring back possibility to use ESCs for motors.
• Fix working with ESP32-S3.
• Other enhancements, fixes and cleanups.

Other

• User built drones gallery is published 🚀.

v1.0

The new Flix version, based on 3D-printed frame. See the detailed description.

Hardware updates

• Using MOSFETs instead of ESCs to control brushed motors (cheaper and simpler code).
• 3D-printed frame.

Software updates

• RC calibration is implemented.
• Smartphone control is implemented (using MAVLink protocol and QGroundControl app).
• Forward-Left-Up coordinate system style is used in the code instead of Forward-Right-Down (more intuitive).
• Tools for converting CSV logs into ULOG and MCAP format.
• Move from ESP32 Core 2.0 to 3.0.
• A lot of code cleanups and readability improvements.
• Bug fixes.

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v0.1

The very first published version of the source code. Telegram-channel is started.

Features:

• Open source ESP32-based quadcopter made from scratch.
• Simple and clean Arduino based source code.
• Acro and Stabilized flight using remote control.
• Precise simulation using Gazebo.
• In-RAM logging.
• Command line interface through USB port.
• Wi-Fi support, partial MAVLink support.
• ESCs with reverse mode support.