it was time to build the rest of the metal detector. Look ma, no MCU! The sensor coil was made by salvaging the wire from an old fluorescent lamp ballast and winding it around the lid of a bucket ...

has developed a cost-effective sensor capable of detecting toxic heavy metals in water. The sensor, made from a copper-based metal-organic framework (MOF), matches the performance of DNA-based sensors ...

Metal detectors sense the presence of metallic objects by detecting changes in electromagnetic fields induced by these objects. This project utilizes an inductive coil as a sensor to detect metal and ...

A metal detector used to be an entirely analogue instrument, an oscillator whose frequency changed with the inductance of its sense coil when a piece of metal approached. [Łukasz Podkalicki ...

Innovative inverted pyramid Hall-effect sensors offer improved accuracy and reduced crosstalk, paving the way for ...

It uses a SN04-N NPN inductive proximity sensor to detect a metal object, and a combination of a laser diode and LDR resistor to distinguish between paper and plastic object based on reflectivity. A ...

Delft University's inverted pyramid Hall-effect sensor achieves improved sensitivity and offset reduction, enhancing ...

Herein, four excellent metal oxide gas sensors were used to detect simulate milk spoilage volatile gases of ethanol, acetone, and hexanal gases and to obtain multidimensional response data. Grid ...

Abstract: In this article, a metal crack sensor based on chipless radio frequency identification (RFID) technology is proposed. It is used to monitor the angle and width of cracks in the Internet of ...

Fraunhofer researchers have developed sensor systems and measuring equipment that detect leaks in hydrogen lines and tanks. Applications for the new technology include continuous monitoring of ...

Bombay on Friday said that its researchers, in collaboration with an Australian university, have developed a sensor to detect toxic metals in water cost-effectively and efficiently.     In a bid to ...