Thumb cluster left
About the Thumb cluster left PCB
Thumb cluster left is an open source PCB design by JesusFreke, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 41.2 × 46.6 mm, with 16 components from 8 distinct parts.
By type, the board carries 5 resistors and 1 connector.
It belongs with the keyboards designs in this gallery.
From the project
A 3D-printed keyboard inspired by the DataHand
Online viewer for cluster assemblies: - finger - left thumb - right thumb
The overall functionality of the lalboard is obviously heavily based on the DataHand, but I designed all of the specific key mechanisms, etc. from scratch, to be printable on a normal hobby-level FDM printer.
With my DataHand, I never felt like I could get the keys positioned quite right for my hand. So one of my primary focuses with the lalboard was adjustability. Each key cluster can be independently adjusted in all 6 degrees of freedom to some extent.
Thumb cluster left bill of materials (BOM)
16 components, 8 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Conn_01x07 | JST_ZH_B7B-ZR_1x07_P1.50mm_Vertical | J1 |
| 5 | IR908-7C-F | IR908-7C-F | IR1, IR2, IR3, IR4, IR5 |
| 5 | PT908-7B-F | PT908-7C-F | PT1, PT2, PT3, PT4, PT5 |
| 1 | C25867 56 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | C11702 100 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2 |
| 1 | C11702 120 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3 |
| 1 | C25744 180 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4 |
| 1 | C25100 150 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5 |
Thumb cluster left design files
The KiCad project lives in the JesusFreke/lalboard repository on GitHub; these links point at the commit this page was built from.
Thumb cluster left: common questions
How big is the Thumb cluster left PCB?
The Thumb cluster left measures 41.2 × 46.6 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Thumb cluster left?
16 components, from 8 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 Thumb cluster left design files?
From the JesusFreke/lalboard 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 Thumb cluster left design in my own project?
Yes, under the terms of its Apache-2.0 license, which JesusFreke chose for the repository.
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