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This Arduino project is very simple to make and has a huge practical application.
Project Owner Contributor

Arduino flame detector with alarms

mircemkmircemk

custom(izable) circuit for sending some megabytes over differential pairs.
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Not an Ethernet Transceiver

yann-guidon-ygdesYann Guidon / YGDES

Turning an old diavox phone into a cellphone. No smart stuff, just a telephone. Pick up the handset and dial just like the old days.
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DIAVOX Cellphone

anders-helgessonAnders Helgesson

A drag-and-drop CAD package that is an open source, local application alternative to TinkerCAD
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CaDoodle: Doodle in CAD!

kevin-harringtonKevin Harrington

Flood and Drain Hydroponic Controller based on PIC 16F648A
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Flood and Drain Hydroponic Controller

grecotrongrecotron

After 45 years, the original Microtronic firmware ROM rises from the ashes and flies with new hardware!
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Microtronic Phoenix

michael-wesselMichael Wessel

EuroRack Adapter Module RJ45 or Cat6 Breakout board
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Vines~Link

neil-mundtNeil Mundt

Simple, inexpensive bird feeder that dispenses peanuts in exchange for dropping stuff in a hole. A vending machine for clever birds.
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Vending Machine for Birds

stephen-chaseyStephen Chasey

Radio telescope design and build project
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H1 Radio Telescope

leonardoLeonardo

The ultimate open-source aquarium LED and mobile app for makers.
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High-Power Smart WiFi Aquarium LED

li-weiLi Wei

A smart offline module which acts like a hub and send commands to different slave devices, Based on ESPNOW protocol ESP8266.
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Offline Voice Recognition Hub Based on ESPNOW

sagar-001Sagar 001

8bit game console from an alternate reality
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Project RAD

photondreamsphotondreams

Goal of the project is to develop and build a homebrew 16 bit relay computer
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Homebrew 16 bit relay computer

peterPeter

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

lutetiumLutetium

Add a lfp battery balancer to a ryobi lead acid battery upgrade
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Ryobi 480e mower LFP battery upgrade with balance

johnrsheahanjohn.r.sheahan

Single DPDT relay clock generator. Latch. D-flipflop. Program counters. DRAM. Fast adder. Parity checker.
Project Owner Contributor

Relay computer circuits with pre-1940 components

matnieuwMatNieuw

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