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Zellia80-HE

mhdimo·Zellia80-HE

Zellia80-HE PCB layout, top view — open source STM32 board by mhdimo

About the Zellia80-HE PCB

Zellia80-HE is an open source STM32 PCB design by mhdimo, published on GitHub under the LGPL-2.1 license. It is a 4-layer board measuring 344 × 117.5 mm, with 479 components from 29 distinct parts.

Its main chip is the STM32G474CETX, from the STM32 family. Other key parts include the SLSS49E-3, CD74HC4067SM, TPS63001 and W25Q16JVSS. By type, the board carries 282 capacitors, 98 ICs, 7 resistors, 2 switches, 1 crystal and 1 connector.

From the project

Zellia80-HE PCB files source

Zellia80 HE Keyboard project is a TKL Hall-Effect keyboard with a bottom row tsangan.

This PCB design is compatible with the Unified Daughterboard C5 (available from KBDFans).

- Hall-Effect Sensors: - Uses HAL9303SO Hall-effect sensors. - Microcontroller: - Based on the STM32G474. - Multiplexing: - Integrates 8 multiplexers (8 total, 2 for each ADC). - RGB: - SK6812 RGB leds. - Daughterboard Compatibility: - Compatible with the Unified Daughterboard C5. - Layout & Compatibility: - Zellia is compatible with any daughterboard powered keyboard as long as you have a proper plate with compatible…

Zellia80-HE, from the project README
From the project README

Main components on the Zellia80-HE

SLSS49E-3CD74HC4067SMTPS63001STM32G474CETXW25Q16JVSS

Zellia80-HE bill of materials (BOM)

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

QtyPartRefs
75
SLSS49E-3
U1, U2, U5, U9, U10, U13, U14, U16 +67
1
SLSS49E-3
U3
6
SLSS49E-3
U4, U6, U8, U11, U89, U98
1
SLSS49E-3
U7
1
SLSS49E-3
U12
8
CD74HC4067SM
U15, U21, U51, U56, U62, U68, U69, U74
1
SLSS49E-3
U33
1
SLSS49E-3
U57
1
SLSS49E-3
U84
1
TPS63001
U85
1
STM32G474CETX
STM32G474CETx
U101
1
W25Q16JVSS
U102
1
8MHZ
8Mhz
Y2
1
CONN_01X04
Conn_01x04
J2
47
SK6812_MINI_E
SK6812_Mini_E
RGB1, RGB2, RGB3, RGB4, RGB5, RGB6, RGB7, RGB8 +39
40
SK6812_MINI_E
SK6812_Mini_E
RGBF1, RGBF2, RGBF3, RGBF4, RGBF5, RGBF6, RGBF7, RGBF8 +32
2
SW_Push
SW1, SW2
1
2.2UH
2.2uH
L1
77
4.7NF
4.7nF
C1, C2, C3, C4, C5, C6, C15, C16 +69
3
10UF
10uF
C7, C14, C20
Show 9 more
QtyPartRefs
87
0.1UF
0.1uF
C8, C9, C10, C11, C12, C13, C205, C206 +79
112
4.7NF
0.1uF
C27, C33, C38, C39, C44, C45, C51, C56 +104
1
4.7NF
0.1uF
C165
1
10NF
10nF
C286
1
1UF
1uF
C287
2
10K
10k
R9, R14
1
1K5
1k5
R11
2
22R
R12, R13
2
100R
R15, R113

Zellia80-HE design files

The KiCad project lives in the mhdimo/Zellia80-HE repository on GitHub; these links point at the commit this page was built from.

Zellia80-HE: common questions

What microcontroller does the Zellia80-HE use?

The Zellia80-HE is built around the STM32G474CETX, from the STM32 family.

How big is the Zellia80-HE PCB?

The Zellia80-HE measures 344 × 117.5 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Zellia80-HE?

479 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 Zellia80-HE design files?

From the mhdimo/Zellia80-HE 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 Zellia80-HE design in my own project?

Yes, under the terms of its LGPL-2.1 license, which mhdimo chose for the repository.

Can I test firmware for the Zellia80-HE 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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