Harmony 42

A 42-key keyboard.

• Switch: TTC Frozen V2
• Keycap: StarryPoem + HIBI Artisan

Concept

Layout

v0.1.0

• width: 14u
• depth: <6u

Made with Python script: 📁 editor

• 📄 locations.csv
• 📄 keyboard-layout.rawdata.json

BOM

Material	QTY	Note
Harmony 42 PCB	1	Schematic-and-PCB
MCU 16 PCB	1	Schematic-and-PCB
Harmony 42 Case	1	PMMA CNC, Mechanics
Harmony 42 Gasket	1	PORON 2mm, Mechanics
Harmony 42 Plate	1	Acrylic 1.5mm, Mechanics
FFC	1	16 ciruits, 0.50mm pitch, Type D (opposite sides), >50mm length
Screw: M2 x 4mm	5

Schematic and PCB

KiCad files:

• 📄 harmony-42-pcb.kicad_sch (v1.0.0)
• 📄 harmony-42-pcb.kicad_pcb (v1.0.0)
• 📄 mcu-16-pcb.kicad_sch (v1.0.0)
• 📄 mcu-16-pcb.kicad_pcb (v1.0.0)

Mechanics

Files:

• 📄 harmony-42-case-topview.svg
  • 📄 1.5mm PMMA plate for 遊舎工房 レーザー加工サービス
    • アクリル クリア 1.5mm A4
  • 📄 2mm PORON gasket for 遊舎工房 レーザー加工サービス
    • フォーム 2mm 297x190接着シート付き
• 📄 harmony-42-case.FCStd
  • 📄 harmony-42-case-Top.step
  • 📄 harmony-42-case-Bottom.step

Firmware

Vial

• Built UF2
  • 📄 takayoshiotake_harmony_42_vial_20240726.uf2
• Code
  • 🔗 https://github.com/vial-kb/vial-qmk/tree/vial/keyboards/takayoshiotake/harmony_42

See vial-porting for more details.

License

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.