AC Voltage Zero Cross Detector
https://www.electronics-lab.com/ac-voltage-zero-cross-detector/
This project provides AC voltage zero-cross timing detection and a DC voltage after diode rectification with high accuracy. Possible applications for such circuits are AC motor controllers, AC lamp controllers, AC Dimmer Controllers, Home Appliances. The circuit outputs a zero-cross signal from 90 Vac to 264 Vac input. The project is based on BM1Z102FJ chip […]
Free Elektor Article: Power Outage Detector with Text Messaging
https://www.electronics-lab.com/free-elektor-article-power-outage-detector-text-messaging/
Power outages are fairly rare in central Europe, and when they do occur, they are usually short. However, if the heating system of your holiday home doesn’t start up again after a power outage, the consequences can be costly. And even if only your freezer at home stops working while you’re on holiday, the stench […]
Physicists design $100 handheld muon detector
https://www.electronics-lab.com/physicists-design-100-handheld-muon-detector/
by Jennifer Chu | MIT News Office: Now physicists working in MIT’s Laboratory for Nuclear Science have designed a pocket-sized cosmic ray muon detector to track these ghostly particles. The detector can be made with common electrical parts, and when turned on, it lights up and counts each time a muon passes through. The relatively […]
iEAT – A Powerful Keychain Detector To Detect Food Allergens
https://www.electronics-lab.com/ieat-powerful-keychain-detector-detect-food-allergens/
For kids and adults with food allergies, having meals from restaurants or hotels can sometimes be very risky. Even when ultimate care is taken, freshly prepared meals can accidentally become cross-contaminated with an offending food and trigger an allergic reaction. Every year many people end up in the emergency room due to food allergies. Researchers of the Harvard Medical School […]
Nuclear physics applied in smoke detectors
https://www.electronics-lab.com/nuclear-physics-applied-smoke-detectors/
by robertgawron.blogspot.com: Not many people know, but in some smoke detectors, radioactive materials play an essential role. Today I will present one of those devices, and my -successful- attempt to reverse engineer it and get the circuit diagram. Nuclear physics applied in smoke detectors – [Link]
IRis – An Infrared Sensor using Photodiode amplification Circuit
https://www.electronics-lab.com/iris-infrared-sensor-using-photodiode-amplification-circuit/
[devttys0] designed a sensitive IR detector for capturing weak infrared signals. He shared in detail how he designed the circuit, beginning from the basic components, walking through solving the problems and finally ended up with a complete working circuit. Craig Heffner/[devttys0] built this circuit for a friend’s Defcon talk, Blinded by the Light, the talk […]
Arduino Lightning Detector
https://www.electronics-lab.com/arduino-lightning-detector/
This is an Arduino tutorial on how to detect lightning from far away. In this tutorial, we will build a lightning detector using an Arduino Uno, a few resistors and some jumper wires. Most lightning detectors often cost too much for the normal hobbyist, however this does not mean one cannot enjoy lightning detection and […]
Internet-Connected Migrane or Allergies Detector
https://www.electronics-lab.com/internet-connected-migrane-or-allergies-detector/
adafruit has published an IoT Migrane or Allergies Detector. This project uses Feather HUZZAH ESP8266 wireless microcontroller board to pull a forecast from the accuweather.com web site, then distills this to its barest essence: good news or bad news? An ambient information display is an indicator which conveys meaningful data non-verbally. Unlike a computer screen which […]
Website is Down Detector
https://www.electronics-lab.com/website-is-down-detector/
by jckelley @ instructables.com: If you work in a company that has a website, you know how important it is that the website always be up and running. That’s why you constantly see “99.99999% reliability!” all over the fancy server hosting sites. A website can’t make money if the system is down, so knowing when that […]
Lie Detector and Biofeedback Arduino Based
https://www.electronics-lab.com/lie-detector-and-biofeedback-arduino-based/
by masteruan @ instructables.com: This tutorial will explain how to build a machine for biofeedback. But first a bit of theory. What is biofeedback? Biofeedback is the process of gaining greater awareness of many physiological functions primarily using instruments that provide information on the activity of those same systems, with a goal of being able to […]