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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

Bugs, Feature Requests, Wishlists
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Feedback - Hackaday.io

lutetiumLutetium

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

lutetiumLutetium

Custom made flex-PCB LED matrix display 8x96
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Miniature flex-PCB LED display

michaelMichael

Ardiuno on ATmega328P/ESP32-C3/RASP PP is controling Si4732, Si5351a, and TA2003.
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DIY Airband Receiver with Hybrid RF Front-End and

nobchanobcha

A small portable and handy music sequencer built on Raspberry Pi Pico
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Kuensa - A Handy Music Sequencer

tinashetinashe

Transform your ideas into schematics using simple or detailed prompts, and export directly to KiCad project files
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prompt to schematic

speedupspeedup

Buy, sell, switch charts, get AI analysis, zoom and size control — wireless, haptic, open source, works with TradingView and Binance
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TRIGGR — Press to Trade. Not to Find the Right Key

sb-componentsSB Components

ESP32-S3 AI wake word camera system with real-time voice activation, edge AI processing, and smart IoT integration.
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ESP32-S3 AI Wake Word Camera System

himanshu-dadaHimanshu Dada