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 Legal / Impressum

Right thumb module, 11 keys (right-T11) — 2 LEDs

Redrawn in KiCad from its EasyEDA Pro source like left-T11, through the qualification gate.

Code
right-T11
Side
right
Slot
thumb
Variant
T11
Status
qualified
Released
none yet

Files from dev@f162cad · 2026-10-17 · KiCad 10.0.6· not a released revision

See its 10 wires Interactive BOM ↗ Parts list (CSV)

Faces

Top face of the Right thumb module, 11 keys
Top
Bottom face of the Right thumb module, 11 keys
Bottom

3D model

Parts

All 4 parts
ReferenceValueFootprintManufacturerMPNLCSCKeyQty
D1-D11 1N4148WS T4 lynx:SOD-323_L1.8-W1.3-LS2.5-RD CJ(江苏长电/长晶) 1N4148WS T4 C2128 a1,a2,b1,b2,c1,c2,c3,d1,d2,e1,e2 11
J1 A2541WV-10P lynx:HDR-TH_10P-P2.54-V-M CJT(长江连接器) A2541WV-10P C225485 —1
LED1,LED2 SK6812mini-012 lynx:LED-SMD_4P-L3.7-W3.5-P1.75-BR-SK6812MINI OPSCO(欧思科) SK6812mini-012 C2886570 —2
SW1-SW11 K9-1267T lynx:SW-TH_K9-1267T 韩国韩荣 K9-1267T C107266 a1,a2,b1,b2,c1,c2,c3,d1,d2,e1,e2 11

Schematic

Schematic of the Right thumb module, 11 keys

Opens full size in a new tab.

Interactive BOM: © 2025-2026 lynx-v4 contributors · CERN-OHL-S-2.0 AND MIT

Design notes

Right thumb module, 11 keys (right-T11) — 2 LEDs

Redrawn in KiCad from its EasyEDA Pro source like left-T11, through the qualification gate. Source of truth: this KiCad project since the gate was ticked on 2026-09-25. The frozen export (ProPrj_CAT-v4_Thumb_Right_Keys-11_2026-08-01.epro2 in the private EasyEDA archive, board Thumb_Right_Keys-11_v0.4.0_1) is the archived original. Generated from electronics/baseline/T11-right/ with its deviations: placed and routed, with the source's copper except around the two LEDs.

The board mirrors left-T11: switches and holes exactly, the header pin order reversed (wiring-harness.toml). J1 is a different 1×10 header part than the left's (A2541WV-10P, C225485), kept as in the source.

Differences from the source

Decided, dated and checked exactly by check_board.py (deviations.toml):

  • LED1, LED2: SK6812mini-012 instead of WS2812B-Mini (one LED part on both thumbs, 2026-09-24), pins mapped by function.
  • Their centres and orientation mirror left-T11's U1/U2, under the mirrored cover's light windows (2026-09-25); the source's LEDs were up to 0.6 mm off that mirror.
  • The copper at both LEDs (2026-09-25): the SK6812's pins sit in other corners, so 18 source traces and 2 vias are replaced by 20 traces and 4 vias. The data line now crosses the supply at LED1 and ground at LED2, each once through the bottom layer. At LED1 the 3V3 trace runs over the data-out pad, 0.23 mm from it and 0.28 mm from the board edge. All other 111 traces and 5 vias are the source's.

Resolved by construction, no deviation needed: the signal nets the source left auto-named ($1N…) carry their names through wiring-harness.toml net_aliases; the outline, drawn as two open polylines in the source, is one closed polygon (the reader stitches it).

Gate record (2026-09-25)

StepStateEvidence
Archive the original export✅sha256 14c01913…db22d204
Produce the KiCad project✅generated, deterministic, saved by kicad-cli 10.0.6
Resolve symbols, footprints, 3D models✅check_lib.py right-T11; the project's own library since 2026-09-26 (electronics/lib/README.md), copper unchanged
Schematic ↔ PCB association, parity✅pcb drc --schematic-parity: no entry
Diff connectivity✅61 connected pads, 22 nets, both directions, against baseline ∘ deviations
Diff placement✅every pad within 0.01 mm; LEDs at the mirrored left-T11 positions
Diff outline, holes✅60.96 × 35.0 mm, 10 vertices, closed; 4 holes Ø2.0
Keys vs the Assembly✅11 cells
Connector labels✅the signals' silk aliases from wiring-harness.toml
Diff copper✅131 traces and 9 vias exactly as baseline ∘ deviations; the GND pour on the source's polygon; every net one piece, DRC 0 unconnected items
ERC / DRC✅/⚠️0 errors; four source edge pads as warnings (below); inherited silkscreen warnings
Human review✅Stas, in KiCad 10.0.6, 2026-09-25, including the new LED copper

Findings

  1. Outer switch pads touch the board edge, mirrored from left-T11: SW4/SW9 pad 1 and SW6/SW11 pad 3 at 0.000 mm. Named in right-thumb-module-11-keys.kicad_dru.
  2. The outline is close to, not exactly, the mirror of left-T11's: the upper corners differ by fractions of a millimetre, and one corner has a single vertex where the left has two. Kept as the source has it; worth one look against the mirrored cover.
  3. The connector label LED_DATA (the wiring harness alias of THUMB_LED_DATA) is longer than the source's Tdata and runs up towards the switch pads; the fab clips silk over pads.
  4. D4, D7, D9 (the diodes turned 90°) were placed reversed by the first redraw (commit f02226e) — see left-T11 finding 5; fixed.

Hand-over

Edit this board in KiCad from now on, as left-T11 describes.