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An open-source NFC access controller you can build for about $10 in parts. Tap a card to unlock a door or a machine.
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Prismo

bsverdlyukb.sverdlyuk

A DIY internet radio and media center for blind and visually impaired users. Pi 4 + Arduino, controlled entirely by physical rotary knobs
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A headless Media Center for the blind with knobs

mcgutschymcgutschy

The Starship Galileo Gemini Class, SD 82 AI vetted & co Authored by the Gemini AI & Kimi 3 AI Graphene mass production-zero power Mini Moons
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The Gemini Protocols for Deep Space Travel

archer-quinnArcher Quinn

Qwirkle Limited Edition by Schmidt : tiles colors vanish in an ugly way. Can we repair them?
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Qwirkle Limited Edition repair

jyocijyoci

Exploration of calculators, their emulation, mechanical aspects such as pretty buttons and quirky displays
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Calculators

svofskisvofski

An educational proof of concept for a first person game engine, built within HyperCard 2.4.
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HyperCard First Person Game Engine

chris-tullyChris Tully

In this project, I convert a classic PCL86 single-ended tube amplifier design to operate with the less common PCL82 vacuum tube.
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DIY PCL82 Tube Amplifier, Single-Ended

mircemkmircemk

Differential I2C over Cat5e using the PCA9615. Two identical boards, one at each end, 100 m tested.
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i2c-over-rj45

rmingonrmingon

Modular platform where electronics snap together without wires.
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Molde

olegOleg

Lots of "Desktop CNC" machines can fit on a desktop. But do they fit _on_your_desk_? Like, between the stapler & paper tray?
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"Desk Accessory" CNC Milling Machine

paul-mcclayPaul McClay

"One LOW in 128 HIGH Lines — A Public Domain ASCII Memory Architecture"
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Single transistor holds full ASCII character

alan-cyrAlan Cyr

Follow for the 'Hacklet' and latest news about hackaday.io
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Hackaday.io Project

lutetiumLutetium

Laser Pointer on a 2-Axis Gantry for Identifying Objects/Points of Interest Relative to Local Space
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Punctum Lucis (Point of Light)

dtw-projectsDTW Projects

A closer look at the Arduino Uno R4 WiFi, featuring the Renesas RA4M1 ARM Cortex-M4, ESP32-S3 connectivity, LED matrix, power management.
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Arduino Uno R4 WiFi: 32-Bit ARM & Renesas

mateo-garciaMATEO GARCIA

Continuing my development of small portable audio recording setups, this time trying a more unconventional SBC to test what it can do...
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Zimaboard 2 Recording Rig

craig-hissettCraig Hissett

ESP32 vacuum sealer controller built with a little help from AI. Closed-loop pressure control, WiFi parameter tuning from your phone
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ESP32 Vacuum Sealer Controller

greg-nuspelGreg Nuspel

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