Staring a new build. So as to that I had an idea, that it can be helpful for everyone starting with code writing to try and manipulate this snippet. It's a simple code to operate a LCD and 2 inputs on A0 and A1. It compares the two with if and else. After the comparator it makes a readable output on the LCD. From here it's very simple to put the comparison into outputs of your own choosing.
//4x20 LCD, 2 sensors in A0 and A1 compare them and output to the LCD
// include the library code:
#include <LiquidCrystal.h>
// initialize the library liquidcrystal.h with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
int sensorPin1 = A0; // defines input pin
int sensorValue1 = 0; // make a varianle sensorValue
int sensorPin2 = A1;
int sensorValue2 = 0;
void setup() {
// set up the LCD's number of columns and rows:
lcd.begin(20, 4);
}
void loop() {
sensorValue1 = analogRead(sensorPin1); // get the value of sensor 1
sensorValue2 = analogRead(sensorPin2); // get valur for sensor 2
lcd.setCursor(0, 0); // Set cursor to top left
lcd.print(sensorValue1);
lcd.setCursor(0, 1);
lcd.print(sensorValue2);
if (sensorValue1 < sensorValue2){
lcd.setCursor(0, 2);
lcd.print("1 is higher than 2");
}
else{
lcd.setCursor(0, 3);
lcd.print("2 is higher than 1");
}
delay(200);
lcd.clear();
}
