Component Abuse Challenge | Hackaday.io

99 projects

Abusing BJT B-E junctions as zeners

Ersatz zeners

ken-yap Ken Yap

Made an XL version of the beloved WS2812B addressable LED that works like its original counterpart!

Neopixel Giant Edition

arnov-sharma Arnov Sharma

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

ESP32: RESONANT_ENTROPY

voidrane-splicer voidrane Splicer

4 bit adder made using AND, OR, XOR gates which were made with Photoresistors and LEDs.

Adding numbers using photoresistors and led

By wiring simple electrical components like relay, neon bulb and a 9V battery, back emf from the relay can be used to light the bulb.

Glow a neon bulb using 9V DC battery and a relay!

Melting plastic into your projects with 3d printed conductive PLA fuses.

3D Printed Electrical Fuses

johnsonfarmsus JohnsonFarms.us

(aka Variable Choke as Speaker Tone Control.)

Using a Transformer as a Variable Choke

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)

Data transmission using an LED as a photodiode

Better Than Bluetooth

* No magic here. But I show that LEDs light up from tiny currents induced by electric fields around us, with no further electronics needed.

LEDs light up without power or electronics!*

joekutz joekutz

A multichannel Adafruit feather form-factor wireless bio-physiological signal acquisition board.

Neuro PlayGround (NPG) Lite

deepak-khatri Deepak Khatri

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

The Piezo Transmitter

bkainka b.kainka

In this, the soul is moving and try to break the mirror to get out from pendent. There are two souls, male and female, which can be switched

SoulCage - the Digital Trapped Soul Pendant

vishal-soni vishal soni

This is a Digital sprit level tool is an instrument designed to indicate whether a surface is horizontal.

Planum - a Digital Spirit Level Tool

vishal-soni vishal soni

Rogowski coil current sensor using cheap shunt regulators as opamps.

TL431 rogowski coil current sensor

tangible tile-based optical touchscreen interface for toys and games

TilePad

This project simulates a double pendulum, a simple system with complex dynamics and high sensitivity to initial conditions.

Interactive Double Pendulum Playground

abhishek-choudhary Abhishek Choudhary

Using base-emitter junction on NPN BJT transistor instead of NTC

Transistor instead of thermosensor? Sure!

aleksei-tertychnyi Aleksei Tertychnyi

Made an RGB USB Drive that is modeled after Ryomen Sukuna, completely from PCBs.

Thumb Drive- Ryomen Sukuna Edition

arnov-sharma Arnov Sharma

2021 Hackaday Prize

I have hacked a lcd display of a digital wrist watch.

Hack Wrist Watch LCD With Arduino || D-type LCD ||

vishal-soni vishal soni

I turned my 2-ton industrial robot into something it was never meant to be: a 3D-printer.

Turning a 2 ton robot into a 3D-printer

brian-brocken Brian Brocken

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

running Windows 9x/NT on MCU such as ESP32-S3

tiny386

Some home computers used to have RF video output. The P2 could bring that back with ATSC HDTV output.

Digital TV signal from Parallax P2 microcontroller

real-solar-cars Real Solar Cars