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A passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion detectors . PIR sensors are commonly used in security alarms and automatic lighting applications.
The channel has been active since April 2, 2006. The company was awarded a YouTube Silver Play Button in August 2015 when it surpassed 100,000 subscribers; as of January 2025, it had 450,000. [24] Adafruit creates different types of videos, all on electronics, with most featuring one of their products. Each week, several live shows are streamed.
Limor Fried is an American electrical engineer and owner of the electronics hobbyist company Adafruit Industries.She is influential in the open-source hardware community, having participated in the first Open Source Hardware Summit and the drafting of the Open Source Hardware definition, and is known by her moniker ladyada, an homage to Lady Ada Lovelace.
A nondispersive infrared sensor (or NDIR sensor) is a simple spectroscopic sensor often used as a gas detector.It is non-dispersive in the fact that no dispersive element (e.g a prism or diffraction grating as is often present in other spectrometers) is used to separate out (like a monochromator) the broadband light into a narrow spectrum suitable for gas sensing.
Time of flight of a light pulse reflecting off a target. A time-of-flight camera (ToF camera), also known as time-of-flight sensor (ToF sensor), is a range imaging camera system for measuring distances between the camera and the subject for each point of the image based on time-of-flight, the round trip time of an artificial light signal, as provided by a laser or an LED.
A carbon dioxide sensor or CO 2 sensor is an instrument for the measurement of carbon dioxide gas. The most common principles for CO 2 sensors are infrared gas sensors ( NDIR ) and chemical gas sensors.
A VR sensor used as a simple proximity sensor can determine the position of a mechanical link in a piece of industrial equipment. A crankshaft position sensor (in an automobile engine) is used to provide the angular position of the crankshaft to the engine control unit. The engine control unit can then calculate engine speed (angular velocity).
On 30 January 2021, to celebrate their achievement of 3 million YouTube subscribers, TwoSet Violin live-streamed another performance, of Sibelius's Violin Concerto, with Chen playing the solo while Yang performed an arrangement of the orchestral component for solo violin. [24] In May 2021, they posted videos to support the Menuhin Competition.