McElyea is a mother of two twins on the autism spectrum. She said she was for the detectors and wants to ensure all students are able to learn about safety and security in a way that makes sense to ...

Lake Wales High School is focusing on students' safety and security with the addition of metal detectors next school year.

As a police officer and a father to students in the school system, he supports Lake Wales High School using a metal detector in the next school year. “Technology’s come a long way.

From DEAL to Metal Coffins Mike Vigil, author and former DEA agent. Seizure of 30 tons of marijuana with the Colombian National Police in the Sierra Nevada mountains.

After downloading the library, load the MQ7_Example.ino example sketch onto your device, with analog out connected to A2 GND connected to GND Vin connected to 5V Upload the sketch, and then monitor ...

The lack of an envelope detector (ED) hinders the realization of bidirectional communication between radio frequency identification (RFID)/near field communication (NFC) tags and readers in ...

This paper proposes a non-destructive multi-channel sensor for liquid level detection based on spoof surface plasmon polaritons (SSPPs). A mathematical model for liquid level sensing is established by ...

Scientists hunting invisible forces in non-magnetic metals with the optical Hall effect report the first-ever successful ...

Best at-home IPL and laser hair removal machines for effortlessly smooth skin I’ve tested a range of devices on legs, underarms and more ...

The Earthquake Detector uses an Arduino Uno and ADXL335 accelerometer to sense ground vibrations. When detected motion exceeds a set threshold, a buzzer is triggered for alert. Built on a breadboard ...