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Mecha Comet is a modular, handheld Linux computer with snap-on extensions

The Comet by Mecha Systems is a modular, Linux-based handheld computer built for hobbyists, engineers, students, artists and roboticists of all kinds.

For now, Mecha offers three standard extensions: a gamepad with a soft-press D-pad and four input buttons, a GPIO panel with access to 40 pins, and a keyboard with ABS keys. At CES 2025, Mecha Systems developers demonstrated a handful of apps running on the Comet, including a Chrome browser, notes page and camera reel, and they also showed off a video of the handheld being used to power a little wheeled robot, which was very cute. Other potential uses include a drone launcher or remote, car communicator, nano satellite, AI assistant or long-range radio transceiver, but those are just the ideas that Mecha has offered up.

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