Flix

Which configuration this profile covers

This profile pins release v1.5. The README at that release documents the Version 1.1 3D-printed frame build. The v1.5 release notes describe a first PCB attempt (the Flix2 board) whose IMU did not work, so an external MPU-6050 board was used. No PCB design files were identified in the pinned archive, so the PCB route is outside this profile. [S001] [S002] [S008]

The Version 1.1 table lists an ESP32 Mini, an IMU board (GY-91/MPU-9265, ICM-20948 or GY-521), four 8520 3.7 V brushed motors with 100N03A MOSFETs, 55 or 65 mm propellers, a 1S Li-Po rated 25C or more, and printed frame, ESP32 holder and washer parts. Two details matter when ordering. The README asks for motors rated exactly 3.7 V, not a 3.7–6 V range. It also says the frame is laid out for the GY-91, so other IMU boards need modified mounting holes. The barometer is not used. Required tools are a 3D printer, soldering iron, solder with flux, screwdrivers and a multimeter. [S001]

Firmware and setup requirements

The usage guide specifies ESP32 Arduino core 3.3.6 and MAVLink library 2.0.25, built with Arduino IDE or Arduino CLI, but asks for the latest FlixPeriph library without a fixed version, so a later rebuild may not use the same driver code. Before flight it requires setting the IMU type and orientation, calibrating the accelerometer, checking IMU status and attitude, and running motor tests with the propellers removed. The assembly guide warns that its photos show an early build with inverted motor directions, so wiring should follow the motor table rather than the photos. That table and the usage guide's motor-test commands agree: front-right and rear-left motors turn counter-clockwise, front-left and rear-right clockwise. Control can come from a smartphone app, QGroundControl with a USB controller, or an SBUS receiver. [S001] [S003] [S004]

Cost, license and remaining gaps

No upstream price or BOM total was identified, so a build budget is not stated here. The parts table gives part types and quantities but no prices. [S001]

No license file was identified in the pinned archive. Firmware and simulator files carry copyright headers without a license grant. The pyflix package metadata declares MIT, but that declaration covers only the Python package, and no MIT license text file was found. Simulator model metadata states its license as Unknown. Reuse rights for the CAD, firmware and documentation therefore remain unresolved. [S005] [S006] [S007] [S008]

The README disclaimer calls the project not easy to assemble and set up, and says it is provided without warranties. Weight, flight time and dimensions were not stated in the inspected sources. Repository activity continued after v1.5. No assembly, flashing, simulation or flight was performed for this profile. [S001] [S002]