Via Hackster.io:

Robots come in as many form factors as there are applications for them. Sizes range from massive industrial machines to tiny bots the size of insects. In the field of robotic human augmentation, a lot of focus is put on large exoskeletons that can make a person stronger. Now, a joint effort between researchers from MIT and the Rhode Island School of Design is bringing robotic augmentation in the other direction with a small robotic arm that’s worn like a wristwatch.

The platform is capable of that dexterity thanks to a series of customizable modules. A base module is placed on a wristband and provides power. The user can then stack various servo and sensor modules to build the robotic arm that suits their needs. Each module has its own ATtiny85 microcontroller, and the modules are chained together to communicate with I2C.

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