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94 projects
167
5
6
LCD 16×2 controller built from 8 multiplexers — no microcontroller, no code, just pure logic.
Project Owner Contributor

μMUX Brain – An LCD Without a Micro

jesus-angel-martinez-mendozaJesus Angel Martinez Mendoza

116
22
17
running Windows 9x/NT on MCU such as ESP32-S3
Project Owner Contributor

tiny386

hchunhuihchunhui

134
0
0
an esp32 based device for measuring/reading entropy levels and detecting anomalous readings.
Project Owner Contributor

ESP32: RESONANT_ENTROPY

voidrane-splicervoidrane Splicer

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

74
0
0
Full-bridge rectifier using base-collector PN junction
Project Owner Contributor

TRANSISTOR BRIDGE

taurai-mirimitaurai mirimi

975
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

1.1k
10
11
(aka Variable Choke as Speaker Tone Control.)
Project Owner Contributor

Using a Transformer as a Variable Choke

kensKenS

618
2
3
I have built a circuit with two PTC fuses rated for 100 mA plus two 6V/100mA incandescent bulbs and two push-button switches.
Project Owner Contributor

The PTC flip-flop

bkainkab.kainka

99
3
9
ESC{21} conference badge made with clear PET and loaded with LEDs
Project Owner Contributor

Fully Transparent Folded Cube Badge

jacopopsjacopops

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

192
0
0
Jade is not just another DOOM engine, because right now, JADE doesn't even play DOOM. But maybe someday, it will on an FPGA or "NOR machine"
Project Owner Contributor

JADE: Not Just Another DOOM Engine

glgormanglgorman

86
0
0
Proof of concept for controlling DC Motors using 2xTB6612FNG Modules using PWM from LED PCA9685 PWM IC from Adafruit PCA9685 Servo Module.
Project Owner Contributor

LED PWM FOR DC MOTOR CONTROL

ivan-nestorovskiIvan Nestorovski

1
0
Compact USB PD-powered Reflow soldering table with BLE control via browser.
Project Owner Contributor

USB PD Reflow micro table

vitalyVitaly

8.5k
42
40
The aim of this project is to make high grade DIY or turnkey AFM.
Project Owner Contributor

Atomic Force Microscope - from ground up

100dollarhacker100dollarhacker

314
2
15
Cook your hot dogs and test your LEDs at the same time with this convienent, safe-ish LED tester!
Project Owner Contributor

100% "Safe" 120VAC LED tester

ian-dunnIan Dunn

94
1
2
Some home computers used to have RF video output. The P2 could bring that back with ATSC HDTV output.
Project Owner Contributor

Digital TV signal from Parallax P2 microcontroller

real-solar-carsReal Solar Cars

2
1
tangible tile-based optical touchscreen interface for toys and games
Project Owner Contributor

TilePad

andrewfentemandrewfentem

642
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

6
5
Serpentime is a digital internet clock that transforms into a retro Snake game console at the press of a button
Project Owner Contributor

SerpenTime

arnov-sharmaArnov Sharma

1.1k
6
9
A proof of concept which demonstrates how analog op amps can perform digital logic functions.
Project Owner Contributor

OP-Amps Gone Digital - A BCD to 7 Seg Converter

gschmidt958gschmidt958

151
2
1
A multichannel Adafruit feather form-factor wireless bio-physiological signal acquisition board.
Project Owner Contributor

Neuro PlayGround (NPG) Lite

deepak-khatriDeepak Khatri

2
1
Making a solar powered LED light blink when it sees it's own light
Project Owner Contributor

Solar Light Sees Itself

hdickermanhdickerman

662
14
18
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

1.4k
16
18
An average Room AQI Monitor with a Classic Twist
Project Owner Contributor

Room Air Quality Monitor

arnov-sharmaArnov Sharma

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