Component Abuse Challenge | Hackaday.io

99 projects

Rogowski coil current sensor using cheap shunt regulators as opamps.

TL431 rogowski coil current sensor

For this Halloween, I'm fusing the creative blocky world of Minecraft with the spooky glow of the colorful RGB LEDs in a fun & simple projec

A Color Adjustable Minecraft Lantern

An average Room AQI Monitor with a Classic Twist

Room Air Quality Monitor

arnov-sharma Arnov Sharma

When you are given several PC817 optocouplers, you naturally start thinking about what you could build with them. A simple flasher!

The Opto Flasher

bkainka b.kainka

MOSFET CAPACITANCE AS A COMPONENT

USING A MOSFET AS A CAPACITOR

taurai-mirimi Taurai Mirimi

My idea is to build a small solar panel using 24 power transistors in a TO3 package.

SOLAR BJT charger SEE THE VIDEO

gfresourcesvideo gfresources.video

Using the 555 as a resistor

Abusing 555 timers for fun and profit

nicholas-bos Nicholas Bos

an esp32 based device for measuring/reading entropy levels and detecting anomalous readings.

ESP32: RESONANT_ENTROPY

voidrane-splicer voidrane Splicer

Can you generate enough energy to power a transmitter with a piezo disk?

The Piezo Transmitter

bkainka b.kainka

"Abusing" low cost Analog Switches for Digital Logic.

Analog Multiplexer Logic

ESC{21} conference badge made with clear PET and loaded with LEDs

Fully Transparent Folded Cube Badge

A system designed to capture and collect energy from EMFs, now being refined to enhance circuit efficiency and output.

AEFC - Ambient Energy Field Converter

rhea-rae Rhea Rae

Bending IC's to measure weight - Component Abuse Challenge 2025

OP-AMP Weight Scale

Stay connected during power cuts! A compact, affordable Mini UPS that keeps your WiFi router running when the electricity fails.

DIY Mini UPS For WiFi Router (Easy To Build)

next-builder Next Builder

using an electret capsule as a speaker to calibrate another microphone

microphone as a speaker .. to cal microphones

Most of us have already seen the gas detection system that is found in the ceiling of the office! Well this works in the similar way!

Arduino Gas Leakage and Flame Detection With Alert

Morse Master is a Morse Code translator device in which we can input Morse code using a web application or manually via a push button.

Morse Master

arnov-sharma Arnov Sharma

Overclocking a 555 in astable oscillator configuration

Ludicrous 555

I just made a liquid-repellent keyboard using Arduino and a gyro sensor.

Liquid Repellent Keyboard

This circuit is not new but is rarely used or talked about. So here is a linear VR using BJTs only

BJT AS A ZENER

taurai-mirimi Taurai Mirimi

This project re-purposes a cable as a voltage boosting device

Boosting voltage with a cable

A cyberpunk multi-tool for immersive experiences

Portable Data Node

How to capture Gameboy Advance display signals using a 1.5 USD general purpose MCU and output it via USB Video Class (UVC)

Gameboy Advance 2 USB (GBA2USB)

overpowering daylight, to chase bees and hornets with a drone

overdriving LEDs, for the bees