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ThermEX-Simple

comradef191·ThermEX·ThermEX10-S/ThermEX-Simple.kicad_pcb

ThermEX-Simple PCB layout, top view — open source STM32 board by comradef191
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About the ThermEX-Simple PCB

ThermEX-Simple is an open source STM32 PCB design by comradef191, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 78.9 × 46.3 mm, with 41 components from 9 distinct parts.

Its main chip is the Socketed MCU - STM32 BlackPill, from the STM32 family. By type, the board carries 16 connectors, 10 capacitors, 10 resistors and 1 IC.

From the project

OSHW Thermistor expansion board for Klipper

- Can be stacked ontop of or underneith Nyoomies using appropiate spacers - OpenSource Hardware, licensed under the OHLv2-S - 10 thermistors wired directly to the STM32 - 16 additional thermistors wired up via 4 ADS1115 ICs - Powered directly from the USB port - Uses an ultra-low-noise TPS7A2033 300mA 3.3v voltage regulator to power all expansion headers and the ADS1115s - Features native support for the STM32F4x1 BlackPill, with the unused extra GPIO being broken out to a labelled expansion header alongside 3v3 & GND - Breaks out the I2C2 & I2C3 busses to a pair of dedicated 4-pin JST-XH…

ThermEX-Simple, from the project README
From the project README

ThermEX-Simple bill of materials (BOM)

41 components, 9 distinct parts.

QtyPartRefs
1
~
U1
2
2.54_1x5-M
J1, J3
1
2.54_2x5-M
J2
2
1x4-JSTXH
J4, J16
10
1x2-JSTXH
J5, J6, J7, J8, J9, J10, J11, J12 +2
1
2.54_2x2-M
J15
4
MountingHole
H1, H2, H3, H4
10
100nF
C1, C2, C3, C4, C5, C6, C7, C8 +2
10
4.7kΩ
R1, R2, R3, R4, R5, R6, R7, R8 +2

ThermEX-Simple design files

The KiCad project lives in the comradef191/ThermEX repository on GitHub; these links point at the commit this page was built from.

ThermEX-Simple: common questions

What microcontroller does the ThermEX-Simple use?

The ThermEX-Simple is built around the Socketed MCU - STM32 BlackPill, from the STM32 family.

How big is the ThermEX-Simple PCB?

The ThermEX-Simple measures 78.9 × 46.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ThermEX-Simple?

41 components, from 9 distinct parts. The full bill of materials is listed on this page.

Where can I download the ThermEX-Simple design files?

From the comradef191/ThermEX repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the ThermEX-Simple design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which comradef191 chose for the repository.

Can I test firmware for the ThermEX-Simple 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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