Motivation
For hydroponic systems, as plants get bigger, they require more water and nutrient. We need an automatic watering system.
Useful Specs
- Digital Output Voltage = 3.3V or 5V (right Switch)
- Current Consumption = 5mA
Arduino Code Example
init
int ledpin=13;// initialize pin 13
int inpin=7;// initialize pin 7
int val;// define val
setup
Serial.begin(9600);
pinMode(ledpin,OUTPUT);// set LED pin as “output”
pinMode(inpin,INPUT);// set button pin as “input”
loop
val=digitalRead(inpin);// read the level value of pin 7 and assign if to val
Serial.println(val); // print the data from the sensor
delay(100);
if(val==LOW)// check if the button is pressed, if yes, turn on the LED
{ digitalWrite(ledpin,LOW);}
else
{ digitalWrite(ledpin,HIGH);}
Demo
