HardLabs

Modelh

jhawthorn·modelh·pcb/modelh.kicad_pcb

Modelh PCB layout, top view — open source STM32 board by jhawthorn

About the Modelh PCB

Modelh is an open source STM32 PCB design by jhawthorn, published on GitHub. It is a 2-layer board measuring 150 × 38 mm, with 45 components from 22 distinct parts.

Its main chip is the STM32F103C8Tx, from the STM32 family. Other key parts include the AMS1117-3.3. By type, the board carries 18 resistors, 12 capacitors, 9 connectors, 2 ICs, 2 LEDs and 1 crystal.

From the project

Replacement Model M controller board

CONN FFC VERT 16POS 2.54MM PCB - https://www.digikey.ca/products/en?keywords=A144434-ND CONN FFC VERT 8POS 2.54MM PCB - https://www.digikey.ca/products/en?keywords=5-520315-8-ND * CONN FFC VERT 4POS 2.54MM PCB - https://www.digikey.ca/products/en?keywords=A123169-ND

Modelh, from the project README
From the project README

Main components on the Modelh

STM32F103C8TxAMS1117-3.3

Modelh bill of materials (BOM)

45 components, 22 distinct parts.

QtyPartRefs
1
STM32F103C8Tx
U1
1
AMS1117-3.3
U2
1
8MHz
Y1
1
USB_B
J1
1
Conn_cols
J2
1
Conn_rows
J3
1
Conn_leds
J4
1
Conn_02x03_Odd_Even
J5
1
Conn_02x05_Odd_Even
J6
3
Conn_01x05
J7, J8, J9
1
SW_Push
SW1
2
green
LED1, LED2
2
10uF
C1, C3
8
100nF
C2, C4, C9, C10, C11, C12, C13, C14
2
20pF
C5, C6
2
330
R1, R2
2
22
R3, R4
3
1.5k
R5, R10, R11
1
1M
R6
3
100
R7, R8, R9
Show 2 more
QtyPartRefs
5
0
R12, R13, R14, R15, R16
2
100k
R17, R18

Modelh design files

The KiCad project lives in the jhawthorn/modelh repository on GitHub; these links point at the commit this page was built from.

Modelh: common questions

What microcontroller does the Modelh use?

The Modelh is built around the STM32F103C8Tx, from the STM32 family.

How big is the Modelh PCB?

The Modelh measures 150 × 38 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Modelh?

45 components, from 22 distinct parts. The full bill of materials is listed on this page.

Where can I download the Modelh design files?

From the jhawthorn/modelh repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Modelh design in my own project?

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

Can I test firmware for the Modelh 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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