This is a GitHub repository intended to act as a template for an open source assistive technology device. It is meant to contain all design files, build files, and documentation for the project.
The is an assistive technology device that.
The device is comprised of off-the-shelf electronics and 3D printed parts.
The 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 $ (excluding component shipping fee).
The current version of the device (v1.0) has been built and user tested.

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.
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Need this device? If you or someone you know could benefit from the TEMPLATE, please send us an email at [email protected]. We also invite you to share your journey with us! Tell us your stories about the device and feedback help us make our assistive tech even better!
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Want to help? We are always looking for volunteers to help build these devices for the community. If you have the skills and want to contribute, please contact us via email at [email protected].
The Maker Guide contains all the necessary information to build this device, including tool lists, assembly instructions, and testing.
The Bill of Materials lists all of the parts and components required to build the Template Device.
Reference the Assembly Guide section of the Maker Guide for the tools and steps required to build each portion.
As open source assistive technology, you are welcomed and encouraged to improve upon the design.
| Document | Version | Link |
|---|---|---|
| Maker Guide | 1.0 | Template_Maker_Guide |
| Bill of Materials | 1.0 | Template_Bill_of_Materials |
| User Guide | 1.0 | Template_User_Guide |
| Changelog | 1.0 | Template_Change_Log |
The core design for this device/template is based on the some device/template, an open-source assistive technology project.
- Original Designer: Makers Making Change (a program of Neil Squire).
- Original Copyright: Copyright (c) Neil Squire / Makers Making Change.
- Original Source Location: The original project source files are available online at: https://github.com/makersmakingchange/OpenAT-Template
Copyright (c) 2024 Engineering Good.
This repository describes Open Hardware:
- Everything needed or used to design, make, test, or prepare the Template 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 Playback Switch 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/Engineering-Good/T4G-Template
- Website: https://www.engineeringgood.org
- GitHub: Engineering Good
- Instagram: @engineeringgood
- Facebook: engineeringgood
- LinkedIn: engineeringgood
- Thingiverse: Not Created
- Printables: Not Created
For technical questions, to get involved, or to share your experience we encourage you to visit our website, contact us or email us at [email protected].
