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== resistive Sensor == | |||
[[File:Resistive_Sensor_Steckplatine.png|thumb]] | |||
[[File:Potentiometer_A0_Serial_Steckplatine.png|thumb]] | |||
Recipe for resistive sensor: | |||
* Pick a resistive sensor | |||
* Measure its lowest and highest resistance using a multimeter. | |||
* Write the name of the sensor and the maximum and minimum resistance on the black board. | |||
* pick a resistor which has the same value as the sensor on its highest value | |||
* Use the below code and create the circuit for a resistive sensor | |||
* open the serial monitor and have a look at the values. | |||
* try larger and smaller resistors and see the difference. | |||
* use an other sensor (one that is already listed on the black board) | |||
Recipe for Potentiometer: | |||
* connect the Potentiometer as displayed on the right. | |||
* use the same program as before for the analog sensor | |||
* see what values you get - compare with values from the resistive sensor. | |||
<source lang="c"> | <source lang="c"> | ||
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} | } | ||
</source> | </source> | ||
<br clear="all"> | |||
== switch or Button == | |||
[[File:Button_1k_Pullup_Steckplatine.png]] | [[File:Button_1k_Pullup_Steckplatine.png|thumb]] | ||
<source lang="c"> | <source lang="c"> | ||
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} | } | ||
</source> | </source> | ||
<br clear="all"> |
Latest revision as of 14:28, 9 May 2012
resistive Sensor
Recipe for resistive sensor:
- Pick a resistive sensor
- Measure its lowest and highest resistance using a multimeter.
- Write the name of the sensor and the maximum and minimum resistance on the black board.
- pick a resistor which has the same value as the sensor on its highest value
- Use the below code and create the circuit for a resistive sensor
- open the serial monitor and have a look at the values.
- try larger and smaller resistors and see the difference.
- use an other sensor (one that is already listed on the black board)
Recipe for Potentiometer:
- connect the Potentiometer as displayed on the right.
- use the same program as before for the analog sensor
- see what values you get - compare with values from the resistive sensor.
int mySensorValue;
void setup () {
Serial.begin(9600);
}
void loop () {
mySensorValue = analogRead(A0);
Serial.print("The Sensor Value is: ");
Serial.println(mySensorValue);
}
switch or Button
int mySensorValue;
void setup () {
Serial.begin(9600);
pinMode(13,OUTPUT);
pinMode(4,INPUT);
}
void loop () {
mySensorValue = digitalRead(4);
if (mySensorValue == LOW) {
Serial.println("The Button is pressed. ");
digitalWrite(13,HIGH);
}
else {
Serial.println("The Button is not pressed");
digitalWrite(13,LOW);
}
}