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Steamvan

jmdaly·steamvan

Steamvan PCB layout, top view — open source STM32 board by jmdaly
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About the Steamvan PCB

Steamvan is an open source STM32 PCB design by jmdaly, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 243.4 × 76.7 mm, with 187 components from 29 distinct parts.

Its main chip is the STM32F303CBTX, from the STM32 family. Other key parts include the TLV70233_SOT23-5, NUF2221W1T2G and 74LVC1G34. By type, the board carries 46 diodes, 46 resistors, 20 capacitors, 9 LEDs, 4 ICs and 1 transistor.

It belongs with the keyboards designs in this gallery.

From the project

KiCAD design files for the SteamVan PCB - a 40% keyboard PCB based on an STM32 MCU

The SteamVan was developed as a MiniVan-compatible PCB based on an STM32MCU. It does not support hot swap sockets, and it is designed such that the switches are oriented such that the LEDs are South-facing.

The SteamVan aims to meet the following design goals:

* Switches oriented such that the LEDs are South-facing, for compatibility with Cherry profile keycaps.

Main components on the Steamvan

STM32F303CBTXTLV70233_SOT23-5NUF2221W1T2G74LVC1G34

Steamvan bill of materials (BOM)

187 components, 29 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STM32F303CBTX
STM32F303CBTx
U1
1
TLV70233_SOT23-5
U2
1
NUF2221W1T2G
U3
1
74LVC1G34
U4
1
FMMT493TA
Diodes Incorporated
Q1
1
8MHZ
8MHz
Y1
1
CONN_01X05_MALE
Conn_01x05_Male
J1
1
500MA
500mA
F1
36
MX-1U
K_,1, K_.1, K_/1, K_;1, K_A1, K_B1, K_C1, K_D1 +28
3
MX-1.75U
K_BACK1, K_LOCK1, K_LSHIFT1
1
MX-2.25U
K_ENTER1
4
MX-1.25U
K_FN1, K_LCTL1, K_RALT1, K_SUPER1
3
MX-1.5U
K_FN2, K_FN4, K_RSHIFT1
2
MX-1U
K_LCTL2, K_SUPER2
1
MX-1.5U
K_RALT2
1
MX-2U
K_SPACE1
2
470
RC1, RC9
2
5.1K
5.1k
RC6, RC7
1
10K
10k
RC8
1
SW_Push
SW1
Show 9 more
QtyPartRefs
1
HRO-TYPE-C-31-M-12
USB1
9
WS2812B
RGB1, RGB2, RGB3, RGB4, RGB5, RGB6, RGB7, RGB8 +1
46
D
D1, D2, D3, D4, D5, D6, D7, D8 +38
2
30P
30p
C1, C2
13
100N
100n
C3, C4, C8, C9, C12, C13, C14, C15 +5
1
4.7U
4.7u
C5
3
1u
C6, C10, C11
1
10N
10n
C7
46
560
R1, R2, R3, R4, R5, R6, R7, R8 +38

Steamvan design files

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

Steamvan: common questions

What microcontroller does the Steamvan use?

The Steamvan is built around the STM32F303CBTX, from the STM32 family.

How big is the Steamvan PCB?

The Steamvan measures 243.4 × 76.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Steamvan?

187 components, from 29 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 Steamvan design files?

From the jmdaly/steamvan repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Steamvan design in my own project?

Yes, under the terms of its CC-BY-SA-4.0 license, which jmdaly chose for the repository.

Can I test firmware for the Steamvan 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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