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Converting a $20 4G wireless hotspot into a texting device

Hacker News·about 1 month ago
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The motivation.

I don’t organize my things well. I try to, but quite often end up with a bunch of stuff on my desk. From various aliexpress orders and projects I’m working on, all the way to gifts and stuff I didn’t have time to find a place for.

That is exactly how this project came to be. At one point in time I had, lying on my desk:

Various, hopefully openstick compatible, models - namely the: MF800 - one I ended up using

UZ801 - OK size, but no battery or sufficienet visible GPIO

USB drive form factor one I ditched because of other issues

The Clicks Keyboard for iPhone 16 Pro Max (gift from my cousin - too bad I don’t have an appropriate iPhone 🥲)

The Adafruit SHARP Memory Display board

And of course, my caveman brain combined the 3.

Okay, okay, not to lie I was probably a bit conditioned by knowing about:

Beepy by sqfmi

Playdate

The modem.

Due to the mysterious laws of supply and demand, and the magic of supply chains - somehow you can get a 4G modem with WiFi, bluetooth, a display, fully…

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