HardLabs

HTMDv2.2c

ararobo·HTMDv2.2c

HTMDv2.2c PCB layout, top view — open source STM32 board by ararobo

About the HTMDv2.2c PCB

HTMDv2.2c is an open source STM32 PCB design by ararobo, published on GitHub under the CERN-OHL-S-2.0 license. It is a 4-layer board measuring 90 × 49.9 mm, with 76 components from 33 distinct parts.

Its main chip is the STM32F303K8Tx, from the STM32 family. Other key parts include the TJA1441AT/0Z, A3921KLPTR-T, ADP3338AKCZ-3.3, ISO6741FDWR and SQJ180EP-T1_GE3. By type, the board carries 25 resistors, 20 capacitors, 10 connectors, 9 ICs, 5 diodes and 4 jumpers.

From the project

v2.2sの廉価グレード

これ以降の利用、改変、配布には本ライセンスの条項が適用されます。特に以下の点に注意してください： ソースの開示義務: 本設計を改変して配布・販売する場合、その改変後の設計データも同様に CERN-OHL-S v2 ライセンスで公開する必要があります。 知見の共有: 改良（バグ修正や機能追加）を行った際は、部内での技術共有のために本リポジトリへのフィードバックを推奨します。

Main components on the HTMDv2.2c

TJA1441AT/0ZA3921KLPTR-TSTM32F303K8TxADP3338AKCZ-3.3ISO6741FDWRSQJ180EP-T1_GE3

HTMDv2.2c bill of materials (BOM)

76 components, 33 distinct parts.

QtyPartRefs
1
TJA1441AT/0Z
TJA1441AT_0Z
IC1
1
A3921KLPTR-T
IC2
1
STM32F303K8Tx
U1
1
ADP3338AKCZ-3.3
U2
1
ISO6741FDWR
U3
4
SQJ180EP-T1_GE3
U13, U14, U15, U16
2
Conn_01x04
J1, J2
1
Conn_01x06
J3
2
Conn_01x01
J4, J8
2
Conn_01x01_Pin
J5, J7
1
Conn_01x02_Pin
J6
1
Conn_01x04_Pin
J9
1
Conn_01x02
J10
1
Jumper_2_Open
JP1
3
SolderJumper_2_Open
JP2, JP3, JP4
1
SW_Coded
SW1
2
SW_Push
SW2, SW3
4
LED
D1, D2, D3, D4
1
D
D5
1
220u
C1
Show 13 more
QtyPartRefs
9
0.1u
C2, C3, C5, C7, C8, C16, C19, C20 +1
1
4.7
C4
2
1u
C6, C10
1
C
C9
5
10u
C13, C14, C21, C22, C26
1
0.1u
C27
5
20k
R1, R12, R13, R14, R15
9
R
R2, R4, R5, R6, R9, R17, R26, R33 +1
1
10k
R7
1
120
R10
1
1k
R11
4
10
R18, R19, R24, R25
4
10k
R20, R21, R22, R23

HTMDv2.2c design files

The KiCad project lives in the ararobo/HTMDv2.2c repository on GitHub; these links point at the commit this page was built from.

HTMDv2.2c: common questions

What microcontroller does the HTMDv2.2c use?

The HTMDv2.2c is built around the STM32F303K8Tx, from the STM32 family.

How big is the HTMDv2.2c PCB?

The HTMDv2.2c measures 90 × 49.9 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the HTMDv2.2c?

76 components, from 33 distinct parts. The full bill of materials is listed on this page.

Where can I download the HTMDv2.2c design files?

From the ararobo/HTMDv2.2c repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the HTMDv2.2c design in my own project?

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

Can I test firmware for the HTMDv2.2c 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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