Build A DIY Space Mouse For A More Efficient CAD Workflow

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When you find yourself doing a lot of work in 3D modelling, you occasionally wish for something more capable than the humble two-dimensional mouse. A space mouse is a great tool in this regard, and [Salim Benbouziyane] was inspired to build his own.

[Salim] started his work with research, by watching a teardown of a Connexion Space Navigator 3D mouse. This informed him of the basic functionality and the workings inside. The commercial product appears to use an optical sensor setup, but [Salim] decided to go with a magnetic sensor setup instead due to the parts he had on hand. Namely, a 3-axis magnetometer which seemed perfect for the task.

The build uses a motion platform mounted on six springs which translates and rotates in three dimensions as required. The magnetometer is mounted on the platform above a stationary set of neodymium magnets. Thus, when the platform, and thus sensor, moves, the magnetometerā€™s output can be used to determine the motion of the platform and translate that into useful viewport commands for CAD software. A RP2040 is charged with reading the magnetometer and acting as a USB HID device. Itā€™s all wrapped up in a neat 3D-printed housing.

For now, itā€™s a little simpler in its operation than a full 6 DOF Spacemouse, but it nonetheless has helped [Salim]ā€™s workflow improve. A good peripheral like this can be a real boon on the desktop; weā€™ve seen a few DIY projects in this realm for just that reason. Video after the break.

[Thanks to CH for the tip!]



from Blog ā€“ Hackaday https://ift.tt/GQpucUl

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