Since 3D scanners have become more affordable, 3D scanning has changed the world of custom 3D printing. Once, 3D scanning was only used in military equipment and spacecraft parts production. With desktop and handheld 3D printers available for a few hundred dollars, 3D scanning has found a place in home fun and hobby projects. You […]
What are different types of biometric sensors?
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 […]
What are the different types of fingerprint scanners?
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 […]
How to design an Arduino-based EMG monitor
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 […]
What are the different types of light sensors?
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 […]
How to design an LDR light/dark sensor using Arduino
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. […]
What are inertial sensors?
Inertial sensors are used to transduce inertial force into measurable electrical signals to measure an object’s acceleration, inclination, and vibration. 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, […]
