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A wobble switch is a switch that can be activated by moving a ball or rod in any direction The switch typically has a fairly low activation force and can be activated with various parts of the body including: hands, head, chin, tongue through cheek. The springiness means they can be useful for users who are able to perform gross motor movements.

(Image: AMDi Wobble Switch)

A number of commercial wobble switches are available, but they are quite expensive.

**Commercially Available Wobble Switches**
|Name|Vendor|Cost|Link|
| — | — | — | — |
|Ultimate Assistive Technology Switch|Enabling Devices|$80 USD Switch, $150 USD w/ mount|https://enablingdevices.com/product/ultimate-switch/|
|Wobble Switch|Prentrom|$195|https://store.prentrom.com/wobble-switch|
|Wobble Switch|AbleNet|$100 USD|https://www.ablenetinc.com/wobble-switch|
|Wobble Switch|AMDi|$100 USD|https://www.amdi.net/products/switches/wobble-switch/|

A cost-effective alternative has been specifically requested by a children’s rehab program.

The purpose of this thread is to assess how much interest there is in this design, and what sort of features are important.

[poll type=multiple results=always min=1 max=2]
* An open source wobble switch design would be useful for me or someone I know.
* I would like to test prototypes and provide feedback.
[/poll]

Please comment below:
1. Any important features this design should have
2. Any existing open source projects

[@mmc_jake]

We’ve started some initial design work on an open-source Wobble Switch, and have a functional prototype:


The design currently uses a commercially available limit switch (e.g. https://www.amazon.ca/uxcell%C2%AE-ME-8166-Flexible-Spring-Momentary/dp/B07KM22TZ2, $18 for 3), some fasteners, and some 3D printed components. This design is a work in progress, but preliminary files are available on GitHub: https://github.com/makersmakingchange/Open-Wobble-Switch/tree/Dev

Over the next while, we will be looking at a more modular design for the wand topper and developing a full set of documentation. If you have any ideas or want to get involved in the design and/or testing, let us know.

[@knowltonjayne]

I’m not here for posting spoilers, but are you going to let people know it’s public now?

:raised_hand_with_fingers_splayed:t2: on the high-five option!

[@mmc_jake]

An initial version of this switch has been released to the MMC Library here:
https://forum.makersmakingchange.com/t/open-wobble-switch/1017

The design could benefit from some more testing, so you can submit a request through the site or add a message to that topic.

[@mmc_jake]

[@MMC_Kristina]

Open wobble switch: https://makersmakingchange.com/project/open-wobble-switch/

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