This 3D-printed enclosure houses a DIY adaptive switch interface for users with fine motor difficulties. The device features two TRRS jacks that connect standard assistive-technology switches to a microcontroller, together functioning as a Human Interface Device (HID) for computers, tablets, or other electronics. While this design supports two switches, it can be modified to add more.

Step-by-step assembly instructions, code, and a parts list for the DIY adaptive switch interface can be found on Instructables.

Print Specifications:

• Printer Brand: Bambu P1S
• Filament: Bambu PLA
• Layer Height: 0.08 mm*
• Infill: 15%
• No supports

*This model will still work with standard, 0.2 mm, layer height. However, the model does feature friction-fit tabs, so printing with 0.2 mm layers may result in a slightly looser fit.

Written & Created By: Rhiannon Morris

Acknowledgements: Thank you to Nassib Khan-Cruz and Evan Long for helping me learn basic Onshape functions. It was a huge help in the creation of the device!