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Flix Quadcopter
B
BBROKER-2
@BROKER-2
👤
okalachev
Original creator · GitHub
✓ Links verified Jul 19, 2026
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Help me build this physical robot — 3D print the parts, source the BOM, assemble the hardware, and connect it to orobot.io: orobot.io/o/program/BROKER-2/flix-quadcopter — agent docs at orobot.io/llms.txt
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About this program
Flix (flight + X) is an open-source ESP32-based quadcopter built from scratch, designed for education and research. It features a 3D-printed frame, 4× brushed motors, MAVLink communication over Wi-Fi or ESP-NOW, and clean Arduino firmware under 2,000 lines. Control it with a USB gamepad, RC transmitter, or smartphone — and automate flights with the included Python library. A Gazebo simulator runs the original firmware code for safe development.
Attribution
Author: Oleg Kalachev (@okalachev) License: MIT Source: https://github.com/okalachev/flix Version: 1.1 (3D-printed frame)
🖨 Print Files (5)
flix-frame-1.1.stl
STL
esp32-holder.stl
STL
washer-m3.stl
STL
flix-frame.stl
STL
flix.stl
STL
Required Hardware
~$5–$15 total
Slot 1
ESP32
Microcontroller with built-in WiFi and Bluetooth — for lightweight orobot firmware deployments.
$5–$15
Where to buy →Product links updated May 31, 2026 · ✓ Links verified Jul 19, 2026
$40–$80 estimated
| Part | Qty | Notes |
|---|---|---|
| ESP32 Mini (or ESP32-S3/C3) | 1 | Microcontroller board |
| GY-91 / MPU-9250 IMU board | 1 | 9-axis IMU (barometer optional) |
| 8520 3.7V brushed motor | 4 | Shaft diameter must match propeller hole |
| 55 mm or 65 mm propeller | 4 | 2× type A (CW), 2× type B (CCW) |
| 100N03A MOSFET | 4 | Motor driver transistor |
| 10 kΩ resistor | 6 | Pull-down + voltage divider |
| 3.7V LiPo battery (LW 952540) | 1 | 25C discharge rate minimum |
| MX2.0 2P female battery connector | 1 | |
| LiPo battery charger | 1 | Any |
| M3×5 screws | 2 | IMU board mounting |
| M1.4×5 screws | 4 | Frame assembly |
| 28 AWG wire | — | Recommended gauge |
| Frame main part | 1 | 3D printed (flix-frame-1.1.stl) |
| ESP32 holder (frame top) | 1 | 3D printed (esp32-holder.stl) |
| Washer for IMU mounting | 2 | 3D printed (washer-m3.stl) |
| 5V boost converter (optional) | 1 | For more stable power supply |
| CC2500 transmitter or gamepad | 1 | BetaFPV LiteRadio CC2500 or USB gamepad |
| RC receiver (optional) | 1 | DF500 or any SBUS receiver |
ESP32 Mini (D1 Mini ESP32) — HiLetgo 3-pack ↗ESP32 Mini (D1 Mini ESP32) — AliExpress ↗GY-91 MPU-9250 + BMP280 10DOF IMU board — Amazon ↗GY-91 MPU-9250 + BMP280 IMU board — AliExpress ↗8520 Coreless Brushed Motor 3.7V CW+CCW 4pcs with Props — Amazon ×4 ↗8520 Coreless Brushed Motor 3.7V — AliExpress ×4 ↗55mm Micro Drone Propellers CW+CCW set — AliExpress ×4 ↗3.7V 1000mAh 25C LiPo Battery 952540 — Amazon ↗3.7V 952540 LiPo Battery 1S — AliExpress ↗BetaFPV LiteRadio 3 Pro CC2500 Radio Transmitter ↗
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