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83 projects
363
2
2
Designing affordable BioPhysiology sensors for Human Computer Interface (HCI) and Brain Computer Interface (BCI)
Project Owner Contributor

$1 HCI & BCI

deepak-khatriDeepak Khatri

769
11
14
Open-Source, Environmentally Friendly Mouth Mouse with Sip/Puff Switch
Project Owner Contributor

IRAZU

olman-orozcoOlman Orozco

172
1
2
Op-amp based sine generator for FlySky Radio Controlled Transmitter.
Project Owner Contributor

Sine Control: Analog Computer for RC Tx

johnJohn

1.1k
7
8
A minimal 4-wire milliohm meter with 4.5 digit display
Project Owner Contributor

SDO Milliohm Meter v1

kuba-sunderland-oberKuba Sunderland-Ober

761
3
4
Simple triangle-wave oscillator w/ LM324 OP Amp
Project Owner Contributor

Triangle-wave oscillator

florian-wilhelm-dirnbergerFlorian Wilhelm Dirnberger

936
11
11
Another Operational Transconductance Amplifier - a humble attempt to provide a tolerant discrete design for a vital opamp type
Project Owner Contributor

AORTA

helgehelge

893
4
7
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

279
38
1
A modular mixer where it's easy to add more channel strips.
Project Owner Contributor

Modular Multichannel Stereo Audio Mixer

david-moreno-monteroDavid Moreno Montero

2.5k
17
18
Plugging modules in modified prototype boards allows an affordable and flexible analog computer system with unusual features
Project Owner Contributor

Flexible Analog Computer

rainer-glaschickRainer Glaschick

3.2k
9
12
Rogowski coil current sensor using cheap shunt regulators as opamps.
Project Owner Contributor

TL431 rogowski coil current sensor

stephenStephen

1.2k
12
14
Can you hear the difference between Op Amp´s? Yes! With this headphone amplifier.
Project Owner Contributor

Listen to the Op Amp´s

stephan-martinStephan Martin

226
1
1
Video game logic made from analog circuit. Activate power at the right time in to hit your opponent and win.
Project Owner Contributor

Analog Circuit Game - Switched Tag

pablo-antonio-camacho-jrPablo Antonio Camacho Jr.

730
213
6
Sentry is an ESP32 wifi camera specially designed for local AI mode, its firmware is completely open source
Project Owner Contributor

Open source ESP32-Camera for Yolov4/5/6

fiberpunkFiberpunk

291
1
1
Ski Lift Status Map with LED Indication for Current Lift Operational Status White or Black PCB + Wood, Wifi connected & OTA Updates
Project Owner Contributor

Trail Map Live Lift Status Ski Map - Mammoth CA

kevin-briceKevin Brice

1.9k
13
19
This simple circuit with an Op Amp LM358 produces a characteristic sound triggered by a flash of light, a touch or an electromagnetic pulse.
Project Owner Contributor

Triggered Sound Generator

burkhard-kainkaBurkhard Kainka

149
0
0
Akhiyon se jump maare! dino kamaal re ;)
Project Owner Contributor

EOG dino game controller

deepak-khatriDeepak Khatri

1.6k
8
10
Last year, I found a 5FP7 CRT on ebay for $45. My first thought was "Wouldn't it be cool to build a RADAR scope?"
Project Owner Contributor

ADS-B on a real RADAR CRT

jarrett-cigaineroJarrett Cigainero

90
0
0
In this tutorial, I am going to show you guys how to design this "Transformers PCB Badge" and how to solder the components to it.
Project Owner Contributor

Transformers PCB BADGE

hulkHulk

4.7k
41
58
An analog computer for solving sets of Lorenz attractor differential equations
Project Owner Contributor

Analog Lorenz Attractor Computer

cheeennppCheeenNPP

3.1k
7
11
A quad OpAmp Makes a Buck Regulator
Project Owner Contributor

OpAmp Buck Regulator

aaron-lagerAaron Lager

4.1k
19
23
An open-source Analog Lock-In Amplifier LOCKDOWN: LOCK-In Device for Observing Weak and Noisy signals
Project Owner Contributor

LOCKDOWN: An open-source Analog Lock-In Amplifier

mark-omoMark Omo

644
316
1
Clean hack of the otherwise very solid ART DJ-Pre II phono preamp with the aim of improving the existing design and enhancing its features
Project Owner Contributor

Audio - Phono preamplifier boost

jovanJovan

1.1k
2
2
Raspberry PI and ADC10080, works decently for a 24 Mbps signal and has 100 k input impedance
Project Owner Contributor

Raspberry Pi Pico Super Simple Oscilloscope

sciencedude1990sciencedude1990

321
1
3
Use op amps to create digital logic gates and higher level logic functions.
Project Owner Contributor

Op Amp Logic

dduckertdduckert

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