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2 layers18 × 18 mmCkw12 top, the printed circuit board in 3D

1U horizontal rotary encoder

Size
18 × 18 mm
Copper layers
2
Thickness
1.6 mm
Parts
8
Nets
5
Pads
17
Tracks, vias
45, 5
Routed
Yes
KiCad
KiCad 8.0 (file 20240108)
Created
4 Apr 2025
Updated
8 Nov 2025

Overview

Ckw12 top is an open-source printed circuit board by kumamuk-git, from the kumamuk-git/CKW12 repository on GitHub. It is a 2-layer board of 18 × 18 mm with 8 parts on 5 nets, routed with 45 tracks and 5 vias.

Its parts include 5 connectors and 3 switches.

README

README.md

CKW12

CKW12はクリックあり1U水平ロータリエンコーダです

  • EC12に極力寄せたフットプリント
  • 通常プロファイル、ロープロファイルいずれの高さにも調整可能

Whare to Buy

BOOTHにて組み立てキットが購入可能

Build Guide

ビルドガイドはこちら

alt text
alt text
alt text

Parts

8
QtyValueFootprintReferences
4Conn_01x01_PinCKW12:my_mount_hole_M2_padJ1, J2, J3, J4
1CKW12CKW12:CKW12SW21
1Conn_01x01_PinTestPoint:TestPoint_Pad_D2.0mmJ5
1RotaryEncoderCKW12:EC05E1220202SW1
1SW_DPST_x2CKW12:SKQYACE010SW2

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Questions

How big is the Ckw12 top PCB?

It measures 18 × 18 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Ckw12 top use?

8 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Ckw12 top KiCad files?

From the kumamuk-git/CKW12 repository on GitHub, at the commit this page was made from: the board is pcb/top/ckw12_top.kicad_pcb and its schematic pcb/bottom/ckw12_bottom.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Ckw12 top design in my own project?

Its repository states no licence, so its author keeps all rights: ask kumamuk-git before reusing the design.