A simple, low-cost metal detector built around the 555 Timer IC that detects metallic objects by sensing changes in electromagnetic fields. The circuit uses the 555 IC in astable mode to generate ...

In addition to analog clock hands it has an OLED display driven by the MSP430 inside. Here’s a quick PIC-based metal detector which [Nicholas] built.

In a letter to families, school leaders say a gun was found in a student’s backpack by metal detectors on Tuesday morning. One of my top priorities as principal at Bryan Station is to make sure ...

On Monday, two youths equipped with a metal detector made a discovery in the municipality of Houthalen-Helchteren, Limburg province, Belgium. According to Le Soir, they unearthed several pieces of ...

A Jamestown resident wants to know more about the safety of students inside city schools. Merry Williams-Diers said Tuesday, during open session, to members of the Jamestown Public Schools Board of ...

Amazon.com Inc. will resume metal-detector screening for employees leaving its warehouses — a theft-prevention measure suspended during the pandemic — and is asking workers to register their ...

This latest episode, less than a year after a similar event in the same school, has left many questioning the effectiveness of existing security measures, particularly the use of metal detectors.

This paper demonstrates an on-chip di/dt detector Figure 1: Block diagram of the di/dt detector circuit. The bold lines represent outside devices. IP[4]. This IP can be applicable for feedback ...

Two metal detectorists recently came across millennia-old treasure in a small European village. The discovery was made this spring in the Romanian commune of Breaza, Mureș County, which is ...

Have you ever wondered what might be hidden underground? A metal detectorist can help with that! Bruce Ratkowski is a local metal detectorist who travels the state finding homeowners who want ...