4 layers55.9 × 83.8 mm
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Flight controller
bachaaymene/stm32-flight-controllerCustom 4-layer flight controller PCB for an F450 quadcopter. STM32F405, LSM6DSO IMU, LPS22HB barometer, USB-C. Designed in KiCad.
- Size
- 59 × 59 mm
- Copper layers
- 4
- Thickness
- 1.42 mm
- Parts
- 65
- Nets
- 81
- Pads
- 281
- Tracks, vias
- 677, 168
- Pours
- 11
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 6 Sep 2026
- Updated
- 18 Sep 2026
Overview
Flight controller is an open-source printed circuit board by bachaaymene, from the bachaaymene/stm32-flight-controller repository on GitHub. It is a 4-layer board of 59 × 59 mm with 65 parts on 81 nets, routed with 677 tracks and 168 vias.
It is built around the AP63205WU, LPS22HB and USBLC6-2SC6, with the AO3401A and B340 among its other parts. Its parts include 25 capacitors, 11 resistors, 9 connectors, 5 ICs and 3 diodes. It belongs with the robots and motor control boards and the STM32 boards of this library.
Main components
5
AP63205WU
TSOT-23-6-40℃~+85℃@(TA) 1 1.1MHz 22uA 2A 3.8V~32V 5V Buck Built-in Fixed Overcurrent Protection、Light load efficient mode、Cycle-by-cycle current limiting、Hiccup current limiting、EMI optimization (spread spectrum) Step-down type Yes TSOT-23-6 DC-DC Converters ROHSDiodes IncorporatedDC-DC Converters
LPS22HB
HLGA-10(2x2)-40℃~+85℃ 0.1hpa 0.1hpa 1.7V~3.6V 1uA 26Kpa~1.26bar I2C、SPI On-chip temperature compensation、Integrated ADC and digital interface、On-chip calibration and non-volatile storage、Integrated signal amplifier、On-chip temperature output HLGA-10(2x2) Pressure Sensors ROHSSTMicroelectronicsPressure SensorsUSBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
AO3401A
SOT-231 P-Channel 14nC@10V 30V 47mΩ@10V、60mΩ@4.5V、85mΩ@2.5V 4A 55pF 645pF 80pF 900mV SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
B340
SMC(DO-214AB)-55℃~+150℃ 1 Independent 100A 3A 40V 500mV@3A 500uA@40V SMC(DO-214AB) Schottky Diodes ROHSDiodes IncorporatedSchottky Diodes
README
README.mdSTM32F405 Flight Controller
A 4-layer flight controller board for an F450 quadcopter frame, based on the STM32F405RGT6. Designed in KiCad 10 by SparkLab DZ.
Features
| Block | Part | Notes |
|---|---|---|
| MCU | STM32F405RGT6 (LQFP64) | Cortex-M4F, 168 MHz, 1 MB Flash |
| IMU | LSM6DSO | SPI1, INT1 on PC4 |
| Barometer | LPS22HB | I2C1, address 0x5C |
| Motor outputs | 4x ESC | PC6 to PC9 on TIM3 (DShot capable) |
| 5V regulator | AP63205WU-7 | Synchronous buck, 3S LiPo input, 4.7 uH inductor |
| 3.3V regulator | TLV70233 | LDO from 5V |
| USB | USB Type-C 16P | PA11 / PA12 |
| Battery sense | 33k / 10k divider | PA0 (ADC) |
Schematic
Full schematic as PDF: post/flight_controller.pdf
PCB Layout
Stackup
| Layer | Use |
|---|---|
| L1 | Signal + components |
| L2 | Solid GND plane |
| L3 | Power |
| L4 | Signal |
Pin Map
| Function | Pin(s) |
|---|---|
| IMU SPI1 (CS / SCK / MISO / MOSI) | PA4 / PA5 / PA6 / PA7 |
| IMU interrupt (INT1) | PC4 |
| Baro I2C1 (SCL / SDA) | PB6 / PB7 |
| ESC 1 to 4 | PC6 / PC7 / PC8 / PC9 |
| USB D- / D+ | PA11 / PA12 |
| Battery voltage | PA0 |
Pin configuration in STM32CubeIDE:
Repository Structure
stm32-flight-controller/
├── datasheets/ Component datasheets
├── libs/ Project symbols, footprints and 3D models
├── post/ Schematic PDF and images
├── flight_controller.kicad_pro KiCad project
├── flight_controller.kicad_sch Schematic
├── flight_controller.kicad_pcb PCB layout
├── flight_controller.csv Bill of materials
├── fabrication-toolkit-options.json Fabrication Toolkit plugin settings
├── sym-lib-table Project symbol library table
├── fp-lib-table Project footprint library table
├── .gitattributes Git LFS settings
└── .gitignoreOpening the Project
Requirements: KiCad 10.0 or newer. Older versions cannot open these files.
The repository uses Git LFS for large files, so install it before cloning:
git lfs install
git clone https://github.com/bachaaymene/stm32-flight-controller.gitThen open flight_controller.kicad_pro in KiCad.
All symbols, footprints and 3D models are stored in libs/ with paths relative to the project (${KIPRJMOD}), so no external libraries are needed. If something appears missing, please open an issue.
Manufacturing
The BOM is in flight_controller.csv.
Production files (Gerber, drill, BOM and CPL) for JLCPCB can be generated with the Fabrication Toolkit plugin. Install it from the KiCad Plugin and Content Manager, then run it from the PCB editor. The settings used for this board are saved in fabrication-toolkit-options.json.
Status
- Schematic
- PCB layout
- Prototype fabrication
- Hardware bring-up
- Firmware
License
This hardware design is released under the CERN-OHL-S-2.0 license.
Author
Aymene Bacha, SparkLab DZ
Parts
65| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 100nF | flight_controller:C_0402_1005Metric | C1, C2, C3, C4, C5, C7, C11, C15, C21, C22, C23, C24, C25 |
| 5 | Conn_01x03_Pin | flight_controller:PinHeader_1x03_P2.54mm_Vertical | J1, J4, J5, J6, J7 |
| 4 | MountingHole | flight_controller:MountingHole_3.7mm_Pad_Via | H1, H2, H3, H4 |
| 3 | 10kR | flight_controller:R_0402_1005Metric | R1, R4, R7 |
| 3 | 1uF | flight_controller:C_0603_1608Metric | C8, C18, C19 |
| 2 | 10uF | flight_controller:C_0805_2012Metric | C6, C14 |
| 2 | 12pF | flight_controller:C_0402_1005Metric | C12, C13 |
| 2 | 1kR | flight_controller:R_0402_1005Metric | R10, R11 |
| 2 | 2.2uF | flight_controller:C_0805_2012Metric | C9, C10 |
| 2 | 22uF | flight_controller:C_1206_3216Metric | C16, C17 |
| 2 | 4.7kR | flight_controller:R_0402_1005Metric | R5, R6 |
| 2 | 5.1kR | flight_controller:R_0402_1005Metric | R2, R3 |
| 1 | 0R | flight_controller:R_0402_1005Metric | R9 |
| 1 | 2.7kR | flight_controller:R_0402_1005Metric | R8 |
| 1 | 3V3 | flight_controller:TestPoint_Pad_D1.0mm | 3V3 |
| 1 | 4.7uF | flight_controller:C_0805_2012Metric | C20 |
| 1 | 4.7uH | flight_controller:L_Sunlord_MWSA0503S | L1 |
| 1 | 5V | flight_controller:TestPoint_Pad_D1.0mm | 5V |
| 1 | 600R@100MHz | flight_controller:L_0805_2012Metric | FB1 |
| 1 | 8MHz Crystal_GND24 | flight_controller:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | AO3401A | flight_controller:SOT-23 | Q1 |
| 1 | AP63205WU | flight_controller:TSOT-23-6 | U2 |
| 1 | B340 | flight_controller:D_SMC | D1 |
| 1 | Conn_01x02_Socket | flight_controller:PinSocket_1x02_P2.54mm_Vertical | J2 |
| 1 | Conn_01x04_Socket | flight_controller:PinSocket_1x04_P2.54mm_Vertical | J9 |
| 1 | Conn_01x05_Socket | flight_controller:PinSocket_1x05_P2.54mm_Vertical | J8 |
| 1 | GND | flight_controller:TestPoint_Pad_D1.0mm | GND |
| 1 | GREEN LED | flight_controller:LED_0805_2012Metric | D2 |
| 1 | LPS22HB | flight_controller:ST_HLGA-10_2x2mm_P0.5mm_LayoutBorder3x2y | U5 |
| 1 | LSM6DSOTR | flight_controller:LGA-14_3x2.5mm_P0.5mm_LayoutBorder3x4y | AC1 |
| 1 | RED LED | flight_controller:LED_0805_2012Metric | D3 |
| 1 | STM32F405RGTx | flight_controller:LQFP-64_10x10mm_P0.5mm | U1 |
| 1 | TLV70233_SOT23-5 | flight_controller:SOT-23-5 | U3 |
| 1 | USBLC6-2SC6 | flight_controller:SOT-23-6 | U4 |
| 1 | USB_C_Receptacle_USB2.0_16P | flight_controller:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J3 |
Questions
How big is the Flight controller PCB?
It measures 59 × 59 mm and has 4 copper layers, 1.42 mm thick.
What parts does the Flight controller use?
65 parts, built around the AP63205WU, LPS22HB, USBLC6-2SC6 and AO3401A. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Flight controller KiCad files?
From the bachaaymene/stm32-flight-controller repository on GitHub, at the commit this page was made from: the board is flight_controller.kicad_pcb and its schematic flight_controller.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Flight controller design in my own project?
Its repository states no licence, so its author keeps all rights: ask bachaaymene before reusing the design.
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