4 layers38.5 × 38.5 mm
STM32F411 Flight Controller Rev1
Ansariricky/Unochopper
designing and building a fully fledged fpv drone system from scratch
46 parts
4 layers38 × 38 mm
STM32F405 Flight Controller Rev2
Ansariricky/Unochopperdesigning and building a fully fledged fpv drone system from scratch
- Size
- 38 × 38 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 48
- Nets
- 68
- Pads
- 203
- Tracks, vias
- 248, 23
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 22 Jun 2026
- Updated
- 22 Jun 2026
Overview
STM32F405 Flight Controller Rev2 is an open-source printed circuit board by Ansariricky, from the Ansariricky/Unochopper repository on GitHub. It is a 4-layer board of 38 × 38 mm with 48 parts on 68 nets, routed with 248 tracks and 23 vias.
It is built around the BMP390L, W25Q128JVSIQ and AP2112K-3.3, with the ICM-42688-P among its other parts. Its parts include 21 capacitors, 7 resistors, 5 ICs, 5 connectors and 1 crystal. It belongs with the robots and motor control boards and the STM32 boards of this library.
Main components
4
BMP390L
LGA-10(2x2x0.5)-40℃~+85℃ 0.6pa/K 1.4uA 1.65V~3.6V 30Kpa~1.25bar 3pa 50pa I2C、SPI On-chip temperature compensation、Integrated ADC and digital interface、Standby mode、On-chip temperature output LGA-10(2x2x0.5) Pressure Sensors ROHSBosch SensortecPressure Sensors
W25Q128JVSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 120ms@(32KB) 128Mbit 133MHz 1uA 2.7V~3.6V 20 Years 3ms Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorised
ICM-42688-P
LGA-14(2.5x3)-40℃~+85℃ 1.71V~3.6V 16bit 2KB 7.5uA IMU (accelerometer + gyroscope) SPI、I2C X,Y,Z X,Y,Z ±16g ±2000dps Motion Event Detection, Synchronization, Timestamp Support LGA-14(2.5x3) Accelerometers ROHSTDK InvenSenseAccelerometers
README
README.md<<<<<<< HEAD
Hardware
This repository contains hardware design files for various products and subsystems, including but not limited to:
- Flight Controllers (FC)
- Electronic Speed Controllers (ESC)
- Radio Control Systems (RC)
- Video Transmitters (VTX)
- Power Distribution Units (PDU)
- Sensor Boards
- Companion Computers
- Other supporting avionics and embedded hardware
Naming Convention
Project directories shall follow the format:
<MCU_OR_CPU>_<HARDWARE>_RevXExamples:
STM32F405_FlightController_Rev1
STM32F405_ESC_Rev1
ESP32S3_RC_Rev1
ESP32S3_VTX_Rev1
RPiCM4_CompanionComputer_Rev1Rules
- Use underscores (_) as separators.
- Do not use spaces in directory names.
- MCU/CPU name must appear first.
- Hardware name must appear second.
- Revision number must appear last.
Repository Contents
Each project directory may contain:
- Schematics
- PCB Layouts
- Manufacturing Files
- Bill of Materials (BOM)
- Assembly Documentation
- Design Notes
Revision Policy
New hardware revisions shall be created as separate directories following the established naming convention. Previous revisions should be retained for traceability and historical reference.
=======
Hardware
This repository contains hardware design files for various products and subsystems, including but not limited to:
- Flight Controllers (FC)
- Electronic Speed Controllers (ESC)
- Radio Control Systems (RC)
- Video Transmitters (VTX)
- Power Distribution Units (PDU)
- Sensor Boards
- Companion Computers
- Other supporting avionics and embedded hardware
Naming Convention
Project directories shall follow the format:
<MCU_OR_CPU>_<HARDWARE>_RevXExamples:
STM32F405_FlightController_Rev1
STM32F405_ESC_Rev1
ESP32S3_RC_Rev1
ESP32S3_VTX_Rev1
RPiCM4_CompanionComputer_Rev1Rules
- Use underscores (_) as separators.
- Do not use spaces in directory names.
- MCU/CPU name must appear first.
- Hardware name must appear second.
- Revision number must appear last.
Repository Contents
Each project directory may contain:
- Schematics
- PCB Layouts
- Manufacturing Files
- Bill of Materials (BOM)
- Assembly Documentation
- Design Notes
Revision Policy
New hardware revisions shall be created as separate directories following the established naming convention. Previous revisions should be retained for traceability and historical reference.
076c8ab1df7aa20a5a2c2d71f1c9e05963331e4d
Parts
48| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 0.1u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C3, C4, C5, C7, C13, C14, C17, C18, C21 |
| 5 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R5, R6, R7 |
| 4 | Conn_01x03_Socket | Connector_JST:JST_SH_SM03B-SRSS-TB_1x03-1MP_P1.00mm_Horizontal | J2, J3, J4, J5 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_Pad | H1, H2, H3, H4 |
| 4 | TestPoint | TestPoint:TestPoint_Pad_D1.5mm | TP1, TP2, TP3, TP4 |
| 3 | 1u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C8, C19, C20 |
| 3 | 2.2u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C9, C10, C15 |
| 2 | 18p | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C11, C12 |
| 2 | 4.7k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3, R4 |
| 1 | 10n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C16 |
| 1 | 4.7u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C6 |
| 1 | 600R | Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | FB1 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U4 |
| 1 | BMP390L | Sensor_Pressure:BMP390L | U3 |
| 1 | Conn_01x06_Socket | Connector_JST:JST_SH_SM06B-SRSS-TB_1x06-1MP_P1.00mm_Horizontal | J1 |
| 1 | Crystal | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm_HandSoldering | Y1 |
| 1 | ICM-42688-P | Sensor_Motion:ICM-42688-P | U2 |
| 1 | STM32F405RGTx | Package_QFP:LQFP-64_10x10mm_P0.5mm | U1 |
| 1 | W25Q128JVS | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U5 |
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Questions
How big is the STM32F405 Flight Controller Rev2 PCB?
It measures 38 × 38 mm and has 4 copper layers, 1.6 mm thick.
What parts does the STM32F405 Flight Controller Rev2 use?
48 parts, built around the BMP390L, W25Q128JVSIQ, AP2112K-3.3 and ICM-42688-P. 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 STM32F405 Flight Controller Rev2 KiCad files?
From the Ansariricky/Unochopper repository on GitHub, at the commit this page was made from: the board is Hardware/Flight_Controller/STM32F405_Flight_Controller_Rev2/STM32F405_Flight_Controller_Rev2.kicad_pcb and its schematic Hardware/Flight_Controller/STM32F405_Flight_Controller_Rev2/STM32F405_Flight_Controller_Rev2.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the STM32F405 Flight Controller Rev2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask Ansariricky before reusing the design.