The Key Turner is an assistive technology device that helps people with arthritis or other disabilities to operate their keys. Users loop their finger through the hole and twist to lock and unlock doors with minimal wrist movement. The large key bed can accommodate various shape of key heads.
The device is comprised of off-the-shelf hardware components and 3D printed parts.
The Key Turner is open assistive technology (OpenAT). Under the terms of the open source licenses, the device may be built, used, and improved upon by anyone.
The overall cost of materials is about $1.70.
https://www.makersmakingchange.com/product/key-turner/01tJR00000068z6YAA
This is an open-source assistive technology, so anyone is free to build it. All of the files and instructions required to build the device are contained within this repository. Refer to the Maker Guide below.
You may also submit a build request through the Makers Making Change Assistive Device Library Listing to have a volunteer maker build the device. As the requestor, you are responsible for reimbursing the maker for the cost of materials and any shipping.
If you have the skills and equipment to build this device, and would like to donate your time to create the device for someone who needs it, visit the MMC Maker Wanted section.
The Maker Guide contains all the necessary information to build this device, including tool lists, assembly instructions, programming instructions (if applicable) and testing.
The Bill of Materials lists all of the parts and components required to build the device.
All of the files and individual print files can be found in the /Build_Files/3D_Printing_Files folder.
Place the key on the Key Turner, and bolt it securely into place with the nut, bolt, and washers.
Reference the Assembly Guide section of the Maker Guide for the tools and steps required to build the device.
As open source assistive technology, you are welcomed and encouraged to improve upon the design.
| Document | Version | Link |
|---|---|---|
| Design Rationale | 1.0 | Key_Turner_Design_Rationale |
| Maker Guide | 1.0 | Key_Turner_Maker_Guide |
| Bill of Materials | 1.0 | Key_Turner_Bill_of_Materials |
| User Guide | 1.0 | Key_Turner_User_Guide |
| Changelog | 1.0 | Changelog |
Copyright (c) 2022 Neil Squire.
This repository describes Open Hardware:
- Everything needed or used to design, make, test, or prepare the Key Turner is licensed under the CERN 2.0 Weakly Reciprocal license (CERN-OHL-W v2) or later .
- All software is under the GNU General Public License v3.0 (GPL-3.0).
- Accompanying material such as instruction manuals, videos, and other copyrightable works that are useful but not necessary to design, make, test, or prepare the are published under a Creative Commons Attribution-ShareAlike 4.0 license (CC BY-SA 4.0) .
You may redistribute and modify this documentation and make products using it under the terms of the CERN-OHL-W v2. This documentation is distributed WITHOUT ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING OF MERCHANTABILITY, SATISFACTORY QUALITY AND FITNESS FOR A PARTICULAR PURPOSE. Please see the CERN-OHL-W v2 for applicable conditions.
Source Location: https://github.com/makersmakingchange/Key-Turner
The device was designed by Neil Squire.
The documentation template was created by Makers Making Change / Neil Squire Society and is used under a CC BY-SA 4.0 license. It is available at the following link: https://github.com/makersmakingchange/OpenAT-Template
Designers:
- Neil Squire: Makers Making Change Program
Makers Making Change is a program of Neil Squire, a Canadian non-profit that uses technology, knowledge, and passion to empower people with disabilities.
Makers Making Change leverages the capacity of community based Makers, Disability Professionals and Volunteers to develop and deliver affordable Open Source Assistive Technologies.
- Website: www.MakersMakingChange.com
- GitHub: makersmakingchange
- Bluesky: @makersmakingchange.bsky.social
- Instagram: @makersmakingchange
- Facebook: makersmakechange
- LinkedIn: Neil Squire Society
- Thingiverse: makersmakingchange
- Printables: MakersMakingChange
For technical questions, to get involved, or to share your experience we encourage you to visit our website or contact us.