🖱️ Dunder

A fully* functioning mouse implemented from scratch.

Intended features

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• Button functionality built into the scroll wheel - One should be able to click the scroll wheel.
• additional buttons found on the mouse:

1. Mouse sensitivity buttons - one to increase sensitivity and one to reduce it.
2. forward/back buttons - two macro buttons for the user to bind.

• Led user settings.
• Custom shell. 3D printed.

Design overview

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Buttons provide:

1. Right and left click.
2. Mouse wheel click.
3. Forward and backwards, which are two macro buttons.
4. Sense up and sense down, two buttons to control mouse sensitivity.

Sensor provide position data.

PSU provide:

1. 3.3V to the buttons and mcu.
2. 1.9V to the sensor.

Circuit design

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KiCAD diagram

Board design

KiCAD model

3D model

Real board

Version 1

Version 2

Custom case

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The case was designed from scratch using Fusion 360.

Demo

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Demo of mouse functionality

Demo of 3D printed case