Main-Board for-STM32-Blue pill
Mohamed-U3·Main-Board-for-STM32-Blue-pill
About the Main-Board for-STM32-Blue pill
Main-Board for-STM32-Blue pill is an open source STM32 PCB design by Mohamed-U3, published on GitHub under the MIT license. It is a 2-layer board measuring 40 × 60 mm, with 34 components from 9 distinct parts.
Its main chip is the YAAJ_BluePill_SWD_Breakout, from the STM32 family. By type, the board carries 25 diodes, 8 connectors and 1 IC.
It belongs with the sensors and displays & leds designs in this gallery.
From the project
A custom PCB main board designed to extend JST cables for STM32F103C8T6 Blue Pill microcontroller board. This board provides organized connections for displays, sensors, buttons, and communication modules with proper ESD protection.
A custom PCB main board designed to extend JST cables for STM32F103C8T6 Blue Pill microcontroller board. This board provides organized connections for displays, sensors, buttons, and communication modules with proper ESD protection.
This project is a breakout/expansion board for the STM32 Blue Pill that simplifies connections to various peripherals through organized connectors. The board features dedicated interfaces for TFT displays, laser range finders, sensors, and a 10-button.

Main components on the Main-Board for-STM32-Blue pill
Main-Board for-STM32-Blue pill bill of materials (BOM)
34 components, 9 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | YAAJ_BluePill_SWD_Breakout | YAAJ BluePill_SWD_2 | U1 |
| 1 | Conn_01x08 | JST_XH_B8B-XH-A_1x08_P2.50mm_Vertical | J1 |
| 3 | Conn_01x06 | JST_XH_B6B-XH-A_1x06_P2.50mm_Vertical | J2, J3, J4 |
| 1 | Conn_01x05 | JST_XH_B5B-XH-A_1x05_P2.50mm_Vertical | J5 |
| 1 | Conn_01x04 | JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J6 |
| 1 | Conn_01x02 | JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J7 |
| 1 | Conn_01x04 | JST_XH_S4B-XH-A-1_1x04_P2.50mm_Horizontal | J8 |
| 11 | LESD8D3.3N3T5G | D_SOD-882D | D1, D2, D3, D4, D5, D6, D7, D8 +3 |
| 14 | CESD5V0D3 | D_SOD-323_HandSoldering | D11, D12, D13, D14, D15, D16, D17, D18 +6 |
Main-Board for-STM32-Blue pill design files
The KiCad project lives in the Mohamed-U3/Main-Board-for-STM32-Blue-pill repository on GitHub; these links point at the commit this page was built from.
- LayoutD98.kicad_pcb
- SchematicD98.kicad_sch
Main-Board for-STM32-Blue pill: common questions
What microcontroller does the Main-Board for-STM32-Blue pill use?
The Main-Board for-STM32-Blue pill is built around the YAAJ_BluePill_SWD_Breakout, from the STM32 family.
How big is the Main-Board for-STM32-Blue pill?
The Main-Board for-STM32-Blue pill measures 40 × 60 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Main-Board for-STM32-Blue pill?
34 components, from 9 distinct parts. The full bill of materials is listed on this page.
Where can I download the Main-Board for-STM32-Blue pill design files?
From the Mohamed-U3/Main-Board-for-STM32-Blue-pill repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Main-Board for-STM32-Blue pill design in my own project?
Yes, under the terms of its MIT license, which Mohamed-U3 chose for the repository.
Can I test firmware for the Main-Board for-STM32-Blue pill 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.
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