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Nikhil Agnihotri

What are different types of biometric sensors?

October 22, 2021 By Nikhil Agnihotri

The term “Biometrics” is derived from “bio’” which means life, and “metrics”, which means measurement. Biometrics is developing for use in various technologies, including the unique identification and recognition of people. The technology at its current juncture is widely used in security and surveillance systems. Biometrics also has the possibility of converging with other technologies […]

Filed Under: Biometrics, Featured, Frequently Asked Question (FAQ), Other Tagged With: FAQ

What are the different types of fingerprint scanners?

April 14, 2021 By Nikhil Agnihotri

Fingerprint scanners, which were once reserved for biometric logging systems and attendance systems, are now part of regular smartphones and much more. Fingerprints have been a trusted method of personal identity. Combined with face id or other biometric identification systems like retina scanning, fingerprints offer an impeccable way to recognize any person. With a blast […]

Filed Under: Capacitive, Featured, Frequently Asked Question (FAQ), Optics, Touch Sensing Tagged With: FAQ

How to design an Arduino-based EMG monitor

February 3, 2021 By Nikhil Agnihotri

Electromyography (EMG) is a medical procedure that evaluates the health conditions of muscles and nerve cells. These cells transmit electrical signals that cause muscles to contract or relax. EMG is used to read these signals and plot them as numbers or graphs. Typically, EMG is performed by doctors as one part of a diagnostic tool […]

Filed Under: Featured, Frequently Asked Question (FAQ), Medical, What's Hot Tagged With: FAQ

What are the different types of light sensors?

December 9, 2020 By Nikhil Agnihotri

Light sensors or photosensors, which are designed to measure light intensity, are one of the most commonly used sensors in electronic applications. Light intensity is one of the seven base physical quantities. The measurement of light intensity is useful in many consumer, industrial, and security applications. What is a light sensor? A light sensor is […]

Filed Under: Ambient Light, Featured, Frequently Asked Question (FAQ), Other Tagged With: FAQ

How to design an LDR light/dark sensor using Arduino

December 8, 2020 By Nikhil Agnihotri

Light sensors are widely used in electronic applications. The most common one used is a photoresistor or light-dependent resistor. Despite a long response time, this sensor is inexpensive and useful in several applications. A photoresistor consists of a zigzag track of photo-sensitive semiconductors. It offers pure resistance although this is dependent on the ambient light. […]

Filed Under: Ambient Light, Featured, Frequently Asked Question (FAQ), Other Tagged With: FAQ

What are inertial sensors?

August 24, 2020 By Nikhil Agnihotri

Inertial sensors are used to transduce inertial force into measurable electrical signals to measure acceleration, inclination, and vibration of an object. Micromachining technology has made it possible to produce MEMS (Micro Electromechanical System) inertial sensors using single-crystal silicon sensor elements. These micron-sized sensors meet all major system design drivers like low-cost, high performance, high precision, […]

Filed Under: Featured, Frequently Asked Question (FAQ) Tagged With: FAQ

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