Right thumb
About the Right thumb PCB
Right thumb is an open source PCB design by jakobkg, published on GitHub. It is a 2-layer board measuring 68.6 × 76.2 mm, with 16 components from 4 distinct parts.
By type, the board carries 5 switches, 5 diodes, 5 capacitors and 1 connector.
It belongs with the keyboards designs in this gallery.
From the project
Smashbox/Frame1-inspired game controller with support for Cherry MX and Kailh Choc switches
The controller case is designed to be made out of cut sheets of material, such as laser cut wood/acrylic or metal. I recommend a thickness of 3mm for the top plate for use with low profile Choc switches, and 6mm for use with regular MX switches to ensure keycaps protrude nicely without the sides of the switches being exposed. The switch mounting plate needs to be 1.5mm thick to fit the Cherry MX/Kailh Choc design specs and ensure a good fit, thinner plates may cause poor mounting and thicker plates will interfere with Choc switch mounting.
Right thumb bill of materials (BOM)
16 components, 4 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Conn_01x09 | PinHeader_1x09_P2.54mm_Vertical | J1 |
| 5 | SW_Push | MX+Choc_socket | SW1, SW2, SW3, SW4, SW5 |
| 5 | WS2812B | LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D1, D2, D3, D4, D5 |
| 5 | C | C_0805_2012Metric | C1, C2, C3, C4, C5 |
Right thumb design files
The KiCad project lives in the jakobkg/j0xx repository on GitHub; these links point at the commit this page was built from.
Right thumb: common questions
How big is the Right thumb PCB?
The Right thumb measures 68.6 × 76.2 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Right thumb?
16 components, from 4 distinct parts. The full bill of materials is listed on this page.
Where can I download the Right thumb design files?
From the jakobkg/j0xx repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Right thumb design in my own project?
The repository has no license, so all rights stay with jakobkg. Use it as a reference, and ask the author before reusing the design.
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