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Fat o tesa - Left

stefangluszek·fat-o-tesa·pcbs/v0.2/left/v0.2.kicad_pcb

Fat o tesa - Left PCB layout, top view — open source board by stefangluszek

About the Fat o tesa - Left PCB

Fat o tesa - Left is an open source PCB design by stefangluszek, published on GitHub. It is a 2-layer board measuring 182.6 × 119.1 mm, with 81 components from 9 distinct parts.

Other key parts include the TRRS. By type, the board carries 42 diodes, 1 IC, 1 connector and 1 switch.

It belongs with the keyboards designs in this gallery.

From the project

The requirements I had were simple, a split mechanical keyboard with the base layout as close to the ISO layout as possible to make switching back and forth as painless as possible. Why ISO? Because I use a Swedish/Norwegian keyboard which uses the ISO layout.

The requirements I had were simple, a split mechanical keyboard with the base layout as close to the ISO layout as possible to make switching back and forth as painless as possible. Why ISO? Because I use a Swedish/Norwegian keyboard which uses the ISO layout.

The PCB routing and component placement is also improved. All signal traces are routed on the bottom layer and the top layer is used as a ground layer. Since this is a keyboard matrix, I had to use some vias to jump over the vertical traces when routing the horizontal ones. An alternative, which most other keyboards seem to go for, is…

Fat o tesa - Left, from the project README
From the project README

Main components on the Fat o tesa - Left

TRRS

Fat o tesa - Left bill of materials (BOM)

81 components, 9 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
TRRS
U2
1
MJ-4PP-9
OLED_128x32
J1
29
MX_SW_HS
MX1, MX2, MX3, MX4, MX5, MX6, MX7, MX8 +21
1
MX_SW_HS
MX13
2
MX_SW_HS
MX19, MX35
4
MX_SW_HS
MX25, MX32, MX33, MX34
1
RESET
SW2
36
Diode
D1, D2, D3, D4, D5, D6, D7, D8 +28
6
SK6812MINI
D37, D38, D39, D40, D41, D42

Fat o tesa - Left design files

The KiCad project lives in the stefangluszek/fat-o-tesa repository on GitHub; these links point at the commit this page was built from.

Fat o tesa - Left: common questions

How big is the Fat o tesa - Left PCB?

The Fat o tesa - Left measures 182.6 × 119.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Fat o tesa - Left?

81 components, from 9 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 Fat o tesa - Left design files?

From the stefangluszek/fat-o-tesa 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 Fat o tesa - Left design in my own project?

The repository has no license, so all rights stay with stefangluszek. Use it as a reference, and ask the author before reusing the design.

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