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Equanimity

TyraelWasTaken·Equanimity·Kicad Files/Alice Keyboard.kicad_pcb

Equanimity PCB layout, top view — open source STM32 board by TyraelWasTaken

About the Equanimity PCB

Equanimity is an open source STM32 PCB design by TyraelWasTaken, published on GitHub under the MIT license. It is a 2-layer board measuring 366.9 × 117 mm, with 150 components from 14 distinct parts.

Its main chip is the STM32F072CBTx, from the STM32 family. Other key parts include the XC6206PxxxMR. By type, the board carries 68 diodes, 67 switches, 9 capacitors, 2 ICs, 2 test points and 1 connector.

It belongs with the keyboards designs in this gallery.

From the project

Equanimity, a 65%, gasket mounted, alice style keyboard with a knob

There were no design goals for the project, it was simply what I wanted to see in a keyboard.

It is fully Open-Source, all files I have used to make my own I have published for everyone else to enjoy.

Firmware wise, the qmk build should be functional, and I am actively working on trying to publish a successful via build.

Equanimity uses cherry switches with kailh hotswap sockets, and the standard EC11 (although an EC12 should work just fine). Also, the project uses a C series unified daughterboard with JST connectors.

Equanimity, from the project README
From the project README

Main components on the Equanimity

XC6206PxxxMRSTM32F072CBTx

Equanimity bill of materials (BOM)

150 components, 14 distinct parts.

QtyPartRefs
1
XC6206PxxxMR
U1
1
STM32F072CBTx
U2
1
0781710004
J1
55
SW_Push
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +47
1
SW_Push
SW15
5
SW_Push
SW17, SW30, SW59, SW60, SW64
2
SW_Push
SW32, SW57
4
SW_Push
SW44, SW46, SW61, SW63
2
TestPoint
TP1, TP2
68
D
D1, D2, D3, D4, D5, D6, D7, D8 +60
1
10u
C1
6
100n
C2, C3, C4, C5, C6, C9
2
1u
C7, C8
1
10k
R1

Equanimity design files

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

Equanimity: common questions

What microcontroller does the Equanimity use?

The Equanimity is built around the STM32F072CBTx, from the STM32 family.

How big is the Equanimity PCB?

The Equanimity measures 366.9 × 117 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Equanimity?

150 components, from 14 distinct parts. The full bill of materials is listed on this page.

Where can I download the Equanimity design files?

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

Can I use the Equanimity design in my own project?

Yes, under the terms of its MIT license, which TyraelWasTaken chose for the repository.

Can I test firmware for the Equanimity 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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