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98 projects
2.2k
5
8
Bending IC's to measure weight - Component Abuse Challenge 2025
Project Owner Contributor

OP-AMP Weight Scale

trashtronictrashtronic

608
0
0
I needed a circuit and I did it. ?
Project Owner Contributor

12V battery charger

criscris

3.2k
10
9
Keep your resin at the right temperature with this USB-PD powered vat heater featuring ESP32 control, dual channels, and fan support.
Project Owner Contributor

Vat Heater for Resin 3D Printers

dimitarDimitar

3.9k
39
28
Featuring a ZnSe beam splitter and a pyroelectric detector, the FTIR spectrometer ensures precise molecular analysis with reliability
Project Owner Contributor

JASPER : FTIR

tony-francisTony Francis

397
1
3
Need a couple of GPIO lines but you just have a UART?
Project Owner Contributor

Teasing a few GPIO lines from a UART

ken-yapKen Yap

487
5
3
Can be a cheap webcam used as a decent thermal imagery? What we need? cryogenic temperatures? averaging neighbor pixels or long exposures?
Project Owner Contributor

Webcam as thermal imaging

fvfilippettifvfilippetti

1.5k
15
21
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
Project Owner Contributor

SoulCage - the Digital Trapped Soul Pendant

vishal-sonivishal soni

5.7k
25
19
running Windows 9x/NT on MCU such as ESP32-S3
Project Owner Contributor

tiny386

hchunhuihchunhui

1.4k
2
6
Data transmission using an LED as a photodiode
Project Owner Contributor

Better Than Bluetooth

nickNick

3k
5
7
Using the base-emitter junction of an NPN BJT transistor instead of an NTC thermistor.
Project Owner Contributor

A transistor instead of a thermosensor? Sure!

aleksei-tertychnyiAleksei Tertychnyi

1.9k
3
8
Mistreating an LM3909 and a 7473 to test diodes - a recreation of a 40 year old device.
Project Owner Contributor

The IC abusing diode tester

joseph-eoffJoseph Eoff

422
1
1
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!
Project Owner Contributor

Arduino Gas Leakage and Flame Detection With Alert

jeevJeev

630
1
1
PiBoy Advance is a modified GBA shell that is retrofitted with a custom PICO 1-based circuit.
Project Owner Contributor

PiBoy Advance

arnov-sharmaArnov Sharma

1.3k
4
10
ESC{21} conference badge made with clear PET and loaded with LEDs
Project Owner Contributor

Fully Transparent Folded Cube Badge

jacopopsjacopops

2.4k
5
8
The circuit is very simple: an ultra-bright green LED, two 10-ΜΩ resistors, two 100-nF ceramic capacitors and a push-button switch. When you
Project Owner Contributor

A Self-Charging LED Flasher By Burkhard Kainka

titoTito

652
2
2
Output stage abuses a moving-coil loudspeaker as a flyback inductor and 74HC logic as a high voltage clamp.
Project Owner Contributor

Simple Geiger-Müller Tube Interface

jamesJames

662
3
3
A homebuilt electronic circuit breaker to limit the current on AC powered projects
Project Owner Contributor

Breaker....hardly even know her!

sean-bSean B

8.1k
14
15
Can you generate enough energy to power a transmitter with a piezo disk?
Project Owner Contributor

The Piezo Transmitter

bkainkab.kainka

311
0
0
Full-bridge rectifier using base-collector PN junction
Project Owner Contributor

TRANSISTOR BRIDGE

taurai-mirimiTaurai Mirimi

981
1
3
Can I have it because I need a H-bridge motor driver
Project Owner Contributor

Is that a 74ACT139 in your pocket?

bramBram

454
173
2
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.
Project Owner Contributor

Morse Master

arnov-sharmaArnov Sharma

310
3
4
Why not add a "retro" sound or two to your badge?
Project Owner Contributor

Floppy Clicker SAO

dmitry-pustovitDmitry Pustovit

3.5k
2
1
When you are given several PC817 optocouplers, you naturally start thinking about what you could build with them. A simple flasher!
Project Owner Contributor

The Opto Flasher

bkainkab.kainka

1.2k
3
7
Medic Mini is a handheld ESP32-C6 device that checks symptoms using simple button inputs.
Project Owner Contributor

MEDIC Mini

arnov-sharmaArnov Sharma

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