Category Archives: bubble display

New PCB Revives Ancient Bubble LED Displays

For those of us who remember LED calculators, the HP 5082-7400 series red “bubble” displays hold a special charm. Available in 3, 4, or 5-digit varieties, these multiplexed 7-segment displays provided countless hours of entertainment to those who would spell upside-down words on their pocket calculators. In case you happen …read more

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Posted in 7 segment, bubble display, HP5082, led hacks, Multiplex7seg | Leave a comment

A Stylish Low Part Count Non-Contact Thermometer

A non-contact thermometer is a pretty common tool these days, and one that most of us probably have kicking around the lab. You can grab them online for as little as $10 USD, and while they’re nowhere near as capable as a thermal camera, they certainly have their uses. But …read more

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Posted in 2019 Hackaday Prize, attiny2313, bubble display, IR thermometer, MLX90614, non-contact, tool hacks | Leave a comment