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sensor
A sensor is a device that produces an output signal for the purpose of sensing of a physical phenomenon.
In the broadest definition, a sensor is a device, module, machine, or subsystem that detects events or changes in its environment and sends the information to other electronics, frequently a computer processor. Sensors are always used with other electronics.
Sensors are used in everyday objects such as touch-sensitive elevator buttons (tactile sensor) and lamps which dim or brighten by touching the base, and in innumerable applications of which most people are never aware. With advances in micromachinery and easy-to-use microcontroller platforms, the uses of sensors have expanded beyond the traditional fields of temperature, pressure and flow measurement, for example into MARG sensors.
Analog sensors such as potentiometers and force-sensing resistors are still widely used. Their applications include manufacturing and machinery, airplanes and aerospace, cars, medicine, robotics and many other aspects of our day-to-day life. There is a wide range of other sensors that measure chemical and physical properties of materials, including optical sensors for refractive index measurement, vibrational sensors for fluid viscosity measurement, and electro-chemical sensors for monitoring pH of fluids.
A sensor's sensitivity indicates how much its output changes when the input quantity it measures changes. For instance, if the mercury in a thermometer moves 1 cm when the temperature changes by 1 °C, its sensitivity is 1 cm/°C (it is basically the slope dy/dx assuming a linear characteristic). Some sensors can also affect what they measure; for instance, a room temperature thermometer inserted into a hot cup of liquid cools the liquid while the liquid heats the thermometer. Sensors are usually designed to have a small effect on what is measured; making the sensor smaller often improves this and may introduce other advantages.Technological progress allows more and more sensors to be manufactured on a microscopic scale as microsensors using MEMS technology. In most cases, a microsensor reaches a significantly faster measurement time and higher sensitivity compared with macroscopic approaches. Due to the increasing demand for rapid, affordable and reliable information in today's world, disposable sensors—low-cost and easy‐to‐use devices for short‐term monitoring or single‐shot measurements—have recently gained growing importance. Using this class of sensors, critical analytical information can be obtained by anyone, anywhere and at any time, without the need for recalibration and worrying about contamination.
This thing is pretty cool. Buy it!
Outdoor solar street lamp. Would look nice by the mailbox or entryway. I have no use for it.
New in box.
$200 Shipped to youuuuuuuuuuuu! Continental United States only.
PayPal preferred, but will also take Zelle, Venmo and Cashapp.
I'll donate some of the...
Dillon Precision Low Powder Sensor
Provides an audible and visual reminder when it's time to refill your powder reservoir. When the powder level drops to about 1000 grains, a buzzer will sound and a bright LED will light.
Works with any Dillon Precision powder measure (powder measure sold...
Dillon Precision Low Primer Sensor
Works as it should. No Cracks.
$20
FTF Fishers Landing Fred Meyer on se 164th Av East Vancouver ///// Or if we can meet up when I'm out and about I like to make easy if I can.
Will ship at cost...
USPS Small Flat Rate Priority $9.45.
I do DISCREET PayPal and...
Dillon Precision Low Powder Sensor
$45
Face-to-face Fishers Landing Fred Meyer on SE 164th Av. East Vancouver ///// Or ///// if we can meet up when I'm out and about I like to make it easy if I can.
Will ship at cost...
$16.10 for a USPS Medium Priority Flat Rate Box.
I do DISCREET PayPal...