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Switch plate

girishji·optical-keyboard-mx-old·switch-plate/switch-plate.kicad_pcb

Switch plate PCB layout, top view — open source board by girishji

About the Switch plate PCB

Switch plate is an open source PCB design by girishji, published on GitHub under the MIT license. It is a 2-layer board measuring 303.3 × 124.7 mm, with 74 components from 1 distinct parts.

It belongs with the keyboards designs in this gallery.

From the project

Optical keyboard PCB based on Gateron MX optical switches (KiCad project)

Optical keyboard PCB based on Gateron MX optical switches (KiCad project).

Keyboard matrix uses column-to-row scanning approach. The IR (infra-red) led's in each column is connected to a GPIO pin configured as output. A column is powered by setting the pin HIGH. Each row is connected to a GPIO pin configured as input so that voltage drop across the load register of PT (Phototransistor) can be read.

Switch plate, from the project README
From the project README

Switch plate bill of materials (BOM)

74 components, 1 distinct parts.

QtyPartRefs
74
Gateron_Optical
S1, S2, S3, S4, S5, S6, S7, S8 +66

Switch plate design files

The KiCad project lives in the girishji/optical-keyboard-mx-old repository on GitHub; these links point at the commit this page was built from.

Switch plate: common questions

How big is the Switch plate PCB?

The Switch plate measures 303.3 × 124.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Switch plate?

74 components, from 1 distinct parts. The full bill of materials is listed on this page.

Where can I download the Switch plate design files?

From the girishji/optical-keyboard-mx-old repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Switch plate design in my own project?

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

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