MaD — Open-Source Tensile Testing Machine¶
MaD is a relatively low-cost (< $4,000), portable, spray-resistant, user-modifiable, open-source uniaxial tensile testing machine designed for low-modulus elastomeric and biologic materials.
It is a complete, open system: the mechanical hardware, the Propeller 2 firmware, the control software, the communication protocol, and a full software-in-the-loop test rig are all in one repository.
Launch the control app
Get started

The MaD EdgeBoard — the controller PCB that hosts the Propeller 2.
The control app runs in your browser¶
There is nothing to install — Control is a Progressive Web App that talks straight to the machine over the Web Serial API.
Chromium-only
Web Serial and the File System Access API are available only in Chrome and Edge on desktop. See Requirements & browser support.
Where to go next¶
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New here? Start with the basics
Connect, flash the firmware, calibrate, and run your first test.
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Day-to-day use
Build sample and motion profiles, run tests, and analyse results — every screen, with screenshots.
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Something isn't working
Organised by what you see on screen: every banner, fault and restriction, with a screenshot and the fix.
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Under the hood
The machine, the firmware, the protocol, the app, and the SIL emulator — explained with diagrams.
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Build & contribute
Build the firmware and app, run the test rig, regenerate the protocol, and cut releases.
License¶
MaD is released under the MIT License.