A 100-Year-Old Electronic Musical Instrument Brought Back to Life - In the early years of electrification, when electricity was beginning to shape the... - https://hackaday.com/2025/05/27/a-100-year-old-electronic-musical-instrument-brought-back-to-life/ #musicalinstrument #photoresistor #musicalhacks #electricity #luminaphone #historical #photodiode #recreation #laser #disc

NES Zapper Becomes Telephone - Although there was a time in the 80s (and early 90s for fans of the SuperScope) wh... - https://hackaday.com/2025/05/25/nes-zapper-becomes-telephone/ #peripheralshacks #transmitter #photodiode #neszapper #lightgun #receiver #analog #audio #laser #phone

The Disappearing Capacitor - As part of a phosphorescence detector, [lcamtuf] has been working with photodiodes... - https://hackaday.com/2024/12/12/the-disappearing-capacitor/ #bootstrapping #photodiode #mischacks #opamps

You Can Use LEDs As Sensors, Too - LEDs are a wonderful technology. You put in a little bit of power, and you get out... - https://hackaday.com/2024/07/23/you-can-use-leds-as-sensors-too/ #microcontroller #ledasasensor #forrestmims #lightsensor #photosensor #photodiode #ledsensor #ledhacks #op-amp #sensor #news #led

Particle Physics on a Small, Affordable PCB - Experimenting in the world of particle physics probably brings to mind large, expe... - https://hackaday.com/2024/07/13/particle-physics-on-a-small-affordable-pcb/ #particledetector #betaparticles #betaradiation #semiconductor #photodiode #amplifier #science #rp2040

The Photodiode You Never Knew You Had - Optoelectronics hold a range of possibilities for the hardware experimenter — inde... - https://hackaday.com/2024/02/28/the-photodiode-you-never-knew-you-had/ #optoelectronics #photodiode #ledhacks #parts #led

Op-Amp Challenge: Interactive Analog LED Wave Array - A while back, [Chris Lu] was studying how analog circuits, specifically op-amps ca... - https://hackaday.com/2023/05/12/op-amp-challenge-interactive-analog-led-wave-array/ #differentialequation #analogcomputing #computerhacks #waveequation #integrator #photodiode #infrared #opamp #art

Beautiful Engineering In This Laser Unit From a Tornado Jet Fighter - Those of use hailing from the UK may be quite familiar with the Royal Air Force’s ... - https://hackaday.com/2022/03/13/beautiful-engineering-in-this-laser-unit-from-a-tornado-jet-fighter/ #laserrangefinder #weaponshacks #photodiode #teardown #yaglaser #optical #tornado

IR Translator Makes Truly Universal Remote - Universal remotes are a handy tool to have around if you have many devices that wo... - https://hackaday.com/2022/02/10/ir-translator-makes-truly-universal-remote/ #microcontrollers #raspberrypi #photodiode #translator #infrared #arduino #control #remote #ir

A Trio Of Photodiodes Make A Radiation Detector - The instinctive reaction when measuring nuclear radiation is to think of a Geiger ... - https://hackaday.com/2021/08/06/a-trio-of-photodiodes-make-a-radiation-detector/ #transimpedanceamplifier #radiationdetector #photodiode #toolhacks #science

Image Sensors Demystified by [IMSAI Guy] - The February 1975 issue of Popular Electronics had what was — at the time — an amazing project. The ... - https://hackaday.com/2021/03/27/image-sensors-demystified-by-imsai-guy/ #digitalcamerashacks #digitalcamera #imagesensors #photodiode #camera

Wooden Disc Player Translates Binary Back Into Text - [jbumstead] used MATLAB to convert the text messages into binary to be cut out of the disk.[jbumstea... - https://hackaday.com/2020/09/18/wooden-disc-player-translates-binary-back-into-text/ #binaryencoder #arduinohacks #compactdisc #photodiode #mischacks #dcmotor #magnets #laser

A Pulse Oximeter From Very Little - Against the backdrop of a global respiratory virus pandemic, it’s likely that more than a few read... more: https://hackaday.com/2020/05/16/a-pulse-oximeter-from-very-little/ #pulseoximeter #medicalhacks #photodiode #oximeter #led #ir

Fitness Tracker Hacked Into Optical Density Meter - What do fitness trackers have to do with bacterial cultures in the lab? Absolutely nothing, unless... more: https://hackaday.com/2019/09/20/fitness-tracker-hacked-into-optical-density-meter/ #spectrophotometer #chemistryhacks #opticaldensity #densitometer #photodiode #mischacks #bacteria #nrf51822 #sensor

Dark Absorbing Diodes Are No DAD Joke - We will confess that the authors of the Applied Physics Letters article “Experimental Demonstratio... more: https://hackaday.com/2019/05/08/dark-absorbing-diodes-are-no-dad-joke/ #photodiode #solarpower #science #dark

Radiation Detector Eschews Tubes, Uses Photodiode - When the topic is radiation detection, thoughts turn naturally to the venerable Geiger-Müller tube... more: https://hackaday.com/2019/02/22/radiation-detector-eschews-tubes-uses-photodiode/ #transimpedance #geigercounter #geiger-muller #radioactivity #photodiode #mischacks #radiation #detector #op-amp

Color Sensor Demystified - When [millerman4487] bought a TCS230-based color sensor, he was expecting a bit more documentation... more: https://hackaday.com/2019/01/23/color-sensor-demystified/ #arduinohacks #photodiode #arduino #sensor #color