03-front
About the 03-front PCB
03-front is an open source STM32 PCB design by tuton-RCJ, published on GitHub under the MIT license. It is a 2-layer board measuring 110 × 60 mm, with 36 components from 11 distinct parts.
Its main chip is the STM32F446RETX, from the STM32 family. By type, the board carries 12 diodes, 10 capacitors, 7 ICs, 4 resistors, 2 connectors and 1 inductor.
From the project
基板・回路のリポジトリです。
基板はすべてKiCAD7.0で設計し、JLCPCB様に発注しています。 1-TOKYOが東東京ノード大会で使用した基板です。 2-KANTOは関東ブロック大会で使用した基板です。 3-NAGOYAは名古屋全国大会で使用した基板です。
Main components on the 03-front
03-front bill of materials (BOM)
36 components, 11 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32F446RETX STM32F446RETx | LQFP-64_10x10mm_P0.5mm | U1 |
| 5 | ~ | VL53L0X_horizontal | U2, U3, U4, U5, U6 |
| 1 | ~ | OpenMV h7 | U7 |
| 1 | WRITER CONN | PinSocket_2x04_P2.54mm_Vertical | J1 |
| 1 | ToMAIN | JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J2 |
| 12 | WS2812B | LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D1, D2, D3, D4, D5, D6, D7, D8 +4 |
| 1 | C1015 FerriteBead | R_0805_2012Metric | FB1 |
| 7 | 100N 100n | C_0402_1005Metric | C1, C3, C4, C5, C6, C8, C9 |
| 2 | 4.7U 4.7u | C_0402_1005Metric | C2, C7 |
| 1 | 1u | C_0402_1005Metric | C10 |
| 4 | 10K 10k | R_0603_1608Metric | R1, R2, R3, R4 |
03-front design files
The KiCad project lives in the tuton-RCJ/2025PCB repository on GitHub; these links point at the commit this page was built from.
03-front: common questions
What microcontroller does the 03-front use?
The 03-front is built around the STM32F446RETX, from the STM32 family.
How big is the 03-front PCB?
The 03-front measures 110 × 60 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the 03-front?
36 components, from 11 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the 03-front design files?
From the tuton-RCJ/2025PCB repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the 03-front design in my own project?
Yes, under the terms of its MIT license, which tuton-RCJ chose for the repository.
Can I test firmware for the 03-front without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
More boards in 2025PCB
STM3202-LINE
81 × 52 mm74 parts2LMIT0
STM3201-MAIN
130 × 146 mm68 parts2LMIT0
04-line
80 × 52 mm61 parts2LMIT0
STM3204-PWR
100 × 110 mm46 parts2LMIT0
STM3204-RESCUE
130 × 30 mm40 parts2LMIT0
05-PWR
110 × 125 mm37 parts2LMIT0
STM3204-line sub
71.1 × 35.6 mm25 parts2LMIT0
02-top
121 × 25 mm17 parts2LMIT0
06-UI
100 × 62 mm13 parts2LMIT0
08-REG mod
19.7 × 26.7 mm10 parts2LMIT0
07-OpenMV
36 × 24 mm8 parts2LMIT0
Earlier revisions in the repo: 03-FRONT
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