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It has a high sensitivity and fast response time
CPL filter is great for removing unwanted reflections from non-metallic surfaces such as glass or water
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This is a force sensitive resistor with a round
Red: 81mcd
SparkFun Hall Effect Sensor - US1881 Magneto Portable Power Banks It has a high sensitivityThe US1881 is an integrated Hall effect latched sensor. Thats nice but what does it do? Holding a magnet near the sensor will cause the output pin to toggle. This makes for a robust presence sensor. A reed sensor also works nicely, but can be limited by the glass encapsulation and size. A hall effect sensor is much smaller, but can handle less current than a reed switch. The device includes an on chip Hall voltage generator for magnetic sensing, a
US$ 79.99
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