AC Voltage Zero Cross Detector
High Voltage

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...

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1.726
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Free Elektor Article: Power Outage Detector with Text Messaging
Control

Free Elektor Article: Power Outage Detector with 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...

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2.287
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Physicists design $100 handheld muon detector
Test/Measurements

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...

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4.487
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iEAT – A Powerful Keychain Detector To Detect Food Allergens
TechnologyTest/Measurements

iEAT – A Powerful Keychain Detector To 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...

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5.047
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Nuclear physics applied in smoke detectors
Science

Nuclear physics applied in 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...

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4.613
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IRis – An Infrared Sensor using Photodiode amplification Circuit
SensorYoutube

IRis – An 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]...

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9.379
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Arduino Lightning Detector
Arduino

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...

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12.485
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6 Comments
Internet-Connected Migrane or Allergies Detector
Mcu

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...

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4.338
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