Arduino - Potentiometer Triggers Relay
We are going to learn how to:
- If the potentiometer's analog value is greater than a threshold, turn relay on
- If the potentiometer's analog value is lower than a threshold, turn relay off
- If the potentiometer's output voltage is greater than a threshold, turn relay on
- If the potentiometer's output voltage is lower than a threshold, turn relay off
By connecting relay to light bulb, led strip, motor or actuator... We can use the potentiometer to control light bulb, led strip, motor or actuator...
Or you can buy the following sensor kit:
|DIYables Sensor Kit 30 types, 69 units
About Relay and Potentiometer
If you do not know about relay and potentiometer (pinout, how it works, how to program ...), learn about them in the following tutorials:
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Arduino Code - Analog Threshold
- Connect Arduino to PC via USB cable
- Open Arduino IDE, select the right board and port
- Copy the above code and open with Arduino IDE
- Click Upload button on Arduino IDE to upload code to Arduino
- Rotate the potentiometer
- See the change of relay's state
Read the line-by-line explanation in comment lines of source code!
Arduino Code - Voltage Threshold
Potentiometer's analog value is converted to voltage value, and then compared to voltage threshold to triggers relay
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