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en:iot-open:hardware2:sensors_touch [2023/10/12 12:06] ktokarzen:iot-open:hardware2:sensors_touch [2023/11/23 10:37] (current) pczekalski
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-==== Touch Sensors ==== +====== Touch Sensors ====== 
-=== Button ===+{{:en:iot-open:czapka_b.png?50| General audience classification icon }}{{:en:iot-open:czapka_e.png?50| General audience classification icon }}\\ 
 +== 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>button1}}).  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>button1}}). 
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 </code> </code>
  
-=== 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, torsion and other mechanical forces. Because the force sensor changes its resistance linearly, it should be connected to the analogue input. Connecting another resistor to form the voltage divider is also required, as shown in the figures {{ref>forcesensor1}} and {{ref>forcesensor2}}. The internal ADC of the microcontroller measures the voltage.\\ 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, torsion and other mechanical forces. Because the force sensor changes its resistance linearly, it should be connected to the analogue input. Connecting another resistor to form the voltage divider is also required, as shown in the figures {{ref>forcesensor1}} and {{ref>forcesensor2}}. The internal ADC of the microcontroller measures the voltage.\\
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 </code> </code>
  
-=== 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's charge time and voltage level. Measuring charge time and voltage level gives information about changes in the environment. Ready-to-use sensors include an electronic element that performs measurements and returns digital information at the output so that they can be connected directly to a digital input pin.\\ 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's charge time and voltage level. Measuring charge time and voltage level gives information about changes in the environment. Ready-to-use sensors include an electronic element that performs measurements and returns digital information at the output so that they can be connected directly to a digital input pin.\\
-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>capacity1}} and {{ref>capacity2}}.+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>capacity1}} and {{ref>capacity2}}.
  
 <figure capacity1> <figure capacity1>
en/iot-open/hardware2/sensors_touch.1697112368.txt.gz · Last modified: 2023/10/12 12:06 by ktokarz
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