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It's annoying to guess at the brightness of an indicator when calculating for an LED.
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Why I built an LED luminosity tuner

charliehkimcharlie.h.kim

Building a Pen Plotter with automatic toolchanger with components from an old RepRap style 3D Printer. Runs on Klipper.
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Limn: Pen Plotter with Toolchanger

prashant-sinhaPrashant Sinha

A small size companion robot with personality of its own.
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MiniSoul

sritabh-priyadarshiSritabh Priyadarshi

Survival stories with an Ender 3. Sadly hackaday has no organization features.
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How to win at 3D printing

lion-mclionheadlion mclionhead

This one meter tall humanoid (commercially available) needs to become Santa
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Can a Humanoid become Santa Claus

mike-rigsbyMike Rigsby

RIP OFF was released as an arcade video game by Cinematronics in 1980. I am going to make a version of RIP OFF for the PDP-1.
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RIP OFF for the PDP-1

michael-gardiMichael Gardi

My PDP-1 Replica (PiDP-1) from Obsolescence Guaranteed has arrived and I want to do something cool with it.
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Lunar Lander for the PDP-1

michael-gardiMichael Gardi

Optical Tracking for VR and Mocap using Raspberry Pis, as an Open Source and Open Hardware Implementation
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AsterTrack

seneralSeneral

A board series to help debug hardware at the lowest level
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Alien Probes

jacques-pelletierJacques Pelletier

Enjoy short circuit protection. Have both +3.3V and +5V at hand. Clearly separates data input and output of your prototype. With goodies.
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Super Breadboard

nijssenNijssen

Crafting a wireless gamepad for PC, using parts from an old Genesis gamepad
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Sega Genesis wireless gamepad

farooq-master-patataFarooq [Master Patata]

A retro-style FPGA-based microcomputer. The microcomputer serves as a platform for software and RTL experimentation.
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BoxLambda

epsilonEpsilon

Automated Pressure Advanced Calibration for FDM 3D printer
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Auto PA for 3D printer

markmark

Open-source material tech using ionic triggers to aggregate microplastics at the source, preventing bioavailability in marine ecosystems.
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Skoog Flocculant-Proactive Microplastic Solution

goranskoogGoranskoog

Quad-tube Geiger coincidence detector that uses cosmic ray muons as a true hardware RNG and decision oracle.
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Muon Oracle

allan-binderAllan Binder

Another room navigation robot
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Roomie Bot

jacob-david-c-cunninghamJacob David C Cunningham