spin-maru

Spin-maru: Round Touchpad, Endless Scroll.

likeablob

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Description

Spin-maru is a DIY custom input device with a circular touchpad and a free-spinning scroll wheel.

- Cirque 35mm round touchpad module.
- Free-spinning wheel on a ball bearing, monitored by a high-resolution magnetic encoder (AS5600).
- QMK-based firmware with high-resolution scrolling support (https://github.com/qmk/qmk_firmware/pull/24423 ).
- Customizable 3D Printed Enclosure designed in OpenSCAD.

.stl, .scad files, KICad schematics: https://github.com/likeablob/spin-maru
QMK firmware: https://github.com/likeablob/qmk_firmware/tree/likeablob/spin-maru

Details

Spin-maru in Action

1. Free-Spinning Wheel:

2. High-Resolution Scrolling:

Components

1 × Seeed XIAO RP2040
1 × Cirque GlidePoint Circle Trackpad 35mm Round SPI/I2C curved overlay TM035035-2024-003 https://www.mouser.com/ProductDetail/Cirque/TM035035-2024-003?qs=sGAEpiMZZMvPLCW7ruiZXgtxsIeIbq9%252BZVViMhwscRd7sxWD1ikxPA%3D%3D
1 × AS5600 Magnetic Rotary Encoder Module (w/ magnet) 23.5x22.5 mm
1 × 696ZZ Ball Bearing Eastern Seiko 15ST6B1.5 https://www.easternseiko.co.jp/products/product_j.html
1 × 6 x 6 mm Tactile Switch