HardLabs

Univermain

mememan5868·2026-NroboB·crc/univermain/univermain.kicad_pcb

Univermain PCB layout, top view — open source STM32 board by mememan5868
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About the Univermain PCB

Univermain is an open source STM32 PCB design by mememan5868, published on GitHub. It is a 2-layer board measuring 74.4 × 37.2 mm, with 13 components from 7 distinct parts.

Its main chip is the STM32F446RETX, from the STM32 family. Other key parts include the MCP2561-E-P and MCP2561-E-SN. By type, the board carries 8 connectors, 3 ICs and 2 resistors.

Main components on the Univermain

STM32F446RETXMCP2561-E-PMCP2561-E-SN

Univermain bill of materials (BOM)

13 components, 7 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STM32F446RETX
NUCLEO-F446RE
U1
1
MCP2561-E-P
U2
1
MCP2561-E-SN
MCP2561-E-P
U3
2
Conn_01x02
J1, J2
2
CONN_01X02
Conn_01x02
J3, J4
4
Conn_01x04
J9, J10, J11, J12
2
10K
120
R1, R2

Univermain design files

The KiCad project lives in the mememan5868/2026-NroboB repository on GitHub; these links point at the commit this page was built from.

Univermain: common questions

What microcontroller does the Univermain use?

The Univermain is built around the STM32F446RETX, from the STM32 family.

How big is the Univermain PCB?

The Univermain measures 74.4 × 37.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Univermain?

13 components, from 7 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 Univermain design files?

From the mememan5868/2026-NroboB 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 Univermain design in my own project?

The repository has no license, so all rights stay with mememan5868. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Univermain 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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