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 Legal / Impressum

Right finger module, 20 keys + scroll wheel (right-F20W)

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

Code
right-F20W
Side
right
Slot
fingers
Variant
F20W
Status
in review
Released
none yet

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

See its 13 wires Interactive BOM ↗ Parts list (CSV)

Faces

Top face of the Right finger module, 20 keys + scroll wheel
Top
Bottom face of the Right finger module, 20 keys + scroll wheel
Bottom

3D model

Parts

All 4 parts
ReferenceValueFootprintManufacturerMPNLCSCKeyQty
D1-D21 1N4148WS T4 lynx:SOD-323_L1.8-W1.3-LS2.5-RD CJ(江苏长电/长晶) 1N4148WS T4 C2128 i1,i2,i3,i4,i5,i6,i7,m0,m1,m2,m3,m4,p1,p2,p3,p4,p5,r1,r2,r3,r4 21
J1 KH-2.54PH180-1X13P-L11.5 lynx:HDR-TH_13P-P2.54-V-M kinghelm(金航标) KH-2.54PH180-1X13P-L11.5 C2932703 —1
SW1 Roll Encoder - EVQWGD001 lynx:EVQWGD001 Panasonic EVQWGD001 —m0 1
SW2-SW21 K9-1267T lynx:SW-TH_K9-1267T 韩国韩荣 K9-1267T C107266 i1,i2,i3,i4,i5,i6,i7,m1,m2,m3,m4,p1,p2,p3,p4,p5,r1,r2,r3,r4 20

Schematic

Schematic of the Right finger module, 20 keys + scroll wheel

Opens full size in a new tab.

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

Design notes

Right finger module, 20 keys + scroll wheel (right-F20W)

Redrawn in KiCad from its EasyEDA Pro source like left-T11, through the qualification gate. Source of truth: still the frozen export (ProPrj_CAT-v4_Finger_Right_Keys-20+Wheel_2026-08-01.epro2 in the private EasyEDA archive, board Right-Finger-KeysWheel-Variante2, PCB PCB_R-F-KWv2) until the gate is ticked. Generated from electronics/baseline/F20w-right/: placed and routed with the source's copper, trace for trace. No deviations from the source.

Parts: SW1 is the EVQWGD001 scroll-wheel encoder. Its push switch sits on cell (3,0), the m0 position with its own diode D1, where the left board fits a plain key; its Key field is m0, its canonical path right.fingers.wheel.click, and its A/B/C pins carry FINGER_SCROLL_ENCODER_A, FINGER_SCROLL_ENCODER_B (silk WA, WB) and GND. SW2…SW21 are the K9-1267T keys with D2…D21. J1 the 1×13 header (C2932703) on the bottom. No pour.

Gate record (2026-09-25)

StepStateEvidence
Archive the original export✅sha256 0a8d2c59…9d5ff34b
Produce the KiCad project✅generated, deterministic, saved by kicad-cli 10.0.6
Resolve symbols, footprints, 3D models✅check_lib.py right-F20W; the project's own library since 2026-09-26 (electronics/lib/README.md), copper unchanged; the encoder's body since 2026-10-02, drawn from a reference model
Schematic ↔ PCB association, parity✅pcb drc --schematic-parity: no entry
Diff connectivity✅100 connected pads, 34 nets, both directions
Diff placement✅every pad within 0.01 mm
Diff outline, holes✅95.885 × 61.256 mm, 11 vertices; 5 holes Ø2.0
Keys vs the Assembly✅21 cells, the wheel button as m0
Connector labels✅the signals' silk aliases from wiring-harness.toml: pin 9 now reads FO6 (FINGER_MATRIX_COLUMN_6; the source's Fo9 was wrong)
Diff copper✅all 171 source traces and the via at their source position, width and net; every net one piece, DRC 0 unconnected items
ERC / DRC✅/⚠️0 errors; five source edge pads as warnings (below); inherited silkscreen warnings
Human review⏳Stas, in KiCad

Findings

  1. Outer switch pads cross the board edge, as on left-F21: SW5, SW10, SW16 pad 3 by 0.033 mm, SW15, SW21 pad 1 by 0.042 mm. Named in right-finger-module-20-keys-scroll-wheel.kicad_dru.
  2. The encoder footprint has a Ø1.6 mm copper disc without a drill, on both copper layers, 2.5 mm below pad 6 (an EasyEDA multi-layer fill). Reproduced as the source has it. ❓ If it was meant as the hole for the encoder's positioning boss, it must become a Ø1.6 NPTH before the next order. Panasonic publishes no drawing; the reference model the encoder's body is drawn from puts a Ø1.3 boss, 1.2 mm long, on the disc, and the open-source EVQWGD001 footprints drill Ø1.5–1.7 NPTH there. Check it on a part.
  3. The encoder's pad 6 is unconnected in the source (lib/README.md).
  4. D1 (the one diode turned 90°) was placed reversed by the first redraw (commit f02226e) — see left-T11 finding 5; fixed.

Hand-over

⚠️ Stas: open right-finger-module-20-keys-scroll-wheel.kicad_pro in KiCad 10.0.6 and review; "Update PCB from Schematic" should report no change. Then tick "Human review".