This project details how to convert an inexpensive $20 4G wireless hotspot modem into a custom texting device, drawing inspiration from devices like the Beepy and Playdate. By combining an openstick-compatible MF800 modem, a modified Clicks Keyboard for iPhone, and an Adafruit SHARP Memory Display, the creator built a custom handheld hardware setup for messaging.

The project addresses the maker urge to repurpose spare parts into a functional device, involving hardware modifications like cutting the modem PCB, designing a custom adapter board, and flashing Linux via the openstick project. It is intended for hardware hackers, makers, and enthusiasts interested in building custom mobile devices from cheap off-the-shelf components.

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Hobbyists building a custom handheld texting device
Makers repurposing a cheap 4G wireless hotspot with Linux
Hardware hackers integrating smartphone keyboards into custom electronics
Developers creating a high-contrast dumb device for messaging

Modem Thing

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