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RGB-LED keyboard mod for the 2025 Supercon/2026 Hackaday Europe badge
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Communicator Badge Full RGB Keyboard

maketveemakeTVee

Open-source, open-hardware ESP32 debug tool with LiPo battery, MagSafe mount, mPCIe expansion slot, and USB-C. No PC needed.
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DevPocket

ilya-egorovIlya Egorov

A retrosystem based on the elegant 8/16 bit 6809 processor capable of running UniFLEX and OS9 level II multiuser/multitasking OS
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6809/6309 Eurocard CPU System

roelof4roelof4

Ancient meets modern - bagpipes have been around for thousands of years but never will you have seen or heard an instrument such as this!
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Electro-Magnetic Enabled Bagpipes

goat-industriesGOAT INDUSTRIES

Because your brain has better things to do than remember whether you took your pills...
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MedMinder

jeroen-brinkmanJeroen Brinkman

A tribute to history and their hackers. Browse this growing collection of Apple-1 programs. Works with the Keyboard Serial Terminal.
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Apple1Software.com: connect with an Apple-1

nijssenNijssen

A versatile clock board that provides an adjustable astable clock (0.7 - 480 Hz) and a monostable pulse (110 ms). Insert your own parts!
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Terrific Timer: a customizable 555-timer!

nijssenNijssen

Enjoy short circuit protection for both +3.3V and +5V. Power it using USB-C or with a 9-volt battery. Now has Logic Probe support.
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Super Breadboard 2: a breadboard on steroids

nijssenNijssen

With an accumulator to store one operand. Do binary addition (and subtraction) with the 8-bit Workbench™ and Binary (or Hex) Keyboard.
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Byte Adder Subtractor: an 8-bit Full Adder

nijssenNijssen

Collect, store and display power data from a digital power meter with Tasmota based device
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PowerHist

michil783Michil783

A 7-channel open-source EEG development kit that combines a dry-electrode headset, ADS1299 chip and AI agents
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NeuraDock: A Hackable 7-Channel EEG Workstation

neuradock001Neuradock001

Leveraging the Programmable Power Supply (PPS) of USB PD 3.0 to turn USB-C charger into a bench power supply
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PocketPD - USB-C Portable Bench Power Controller

centylabCentyLab

I got tired of the soldering sponge drying out. So I built an automatic water dispenser to "water" it.
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Soldering Sponge Automatic Water Dispenser

tslaTSla

The first truly personal device for kids — designed to grow with them from drawing sprites to writing C++
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RCKid

zdukaZduka

ESP32-C6 USB stick for Home Assistant: Bluetooth Proxy + air quality sensor. Open source ESPHome firmware. Extends BLE to garden & basement.
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Air Quality Sensor Stick & Bluetooth Proxy

d-eD. E.

A standalone ESP32-based SINAD indicator with FFT and waveform monitoring for practical receiver evaluation.
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A DIY Digital SINAD/Waveform indicator on ESP32/PC

nobchanobcha