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en:iot-open:hardware2:sensors_touch [2023/10/12 12:06] – ktokarz | en:iot-open:hardware2:sensors_touch [2023/11/23 10:37] (current) – pczekalski | ||
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- | ==== Touch Sensors ==== | + | ====== Touch Sensors ====== |
- | === Button | + | {{: |
+ | == Button | ||
A **pushbutton** is an electromechanical sensor that connects or disconnects two points in a circuit when force is applied. The button output discrete value is either //HIGH// or //LOW// (figure {{ref> | A **pushbutton** is an electromechanical sensor that connects or disconnects two points in a circuit when force is applied. The button output discrete value is either //HIGH// or //LOW// (figure {{ref> | ||
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- | === Force Sensor | + | == Force Sensor == |
A force sensor predictably changes resistance depending on the applied force to its surface. Force-sensing resistors are manufactured in different shapes and sizes, and they can measure not only direct force but also tension, compression, | A force sensor predictably changes resistance depending on the applied force to its surface. Force-sensing resistors are manufactured in different shapes and sizes, and they can measure not only direct force but also tension, compression, | ||
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- | === Capacitive Sensor | + | == Capacitive Sensor == |
Capacitive sensors are a range of sensors that use capacitance to measure changes in the surrounding environment. A capacitive sensor is a capacitor charged with a certain amount of current until the threshold voltage is reached. A human finger, liquids or other conductive or dielectric materials that touch the sensor can influence the sensor' | Capacitive sensors are a range of sensors that use capacitance to measure changes in the surrounding environment. A capacitive sensor is a capacitor charged with a certain amount of current until the threshold voltage is reached. A human finger, liquids or other conductive or dielectric materials that touch the sensor can influence the sensor' | ||
- | Capacitive sensors are input devices and can measure proximity, humidity, fluid level and other physical parameters or serve as an input for electronic device control. Sample sensor and ist connection are presented in the figures {{ref> | + | Capacitive sensors are input devices and can measure proximity, humidity, fluid level and other physical parameters or serve as an input for electronic device control. Sample sensor and its connection are presented in the figures {{ref> |
<figure capacity1> | <figure capacity1> |