Hi, im making a code with the dht11 sensor, lcd to see the data and comparators with the humidity and temperature. My goal is to reach some basic comparation like if the humidity is lower than 50% then turn on a led and if is higher than 70% turn on another lead. I want to mix the codes
this is the lcd + dht11
#include <LiquidCrystal.h>
#include <<span class="domtooltips">dht11<span class="domtooltips_tooltip" style="display: none">DHT11/22 is a digital Temperature & Humidity Sensor</span></span>.h>
<span class="domtooltips">dht11<span class="domtooltips_tooltip" style="display: none">DHT11/22 is a digital Temperature & Humidity Sensor</span></span> <span class="domtooltips">DHT11<span class="domtooltips_tooltip" style="display: none">DHT11/22 is a digital Temperature & Humidity Sensor</span></span>;
#define DHT11PIN 6
double DPC;
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 2, 3, 5, 4);
void setup() {
// set up the LCD's number of columns and rows:
lcd.begin(16, 2);
Serial.begin(9600);
Serial.println("<span class="domtooltips">DHT11<span class="domtooltips_tooltip" style="display: none">DHT11/22 is a digital Temperature & Humidity Sensor</span></span> TEST PROGRAM ");
Serial.print("LIBRARY VERSION: ");
Serial.println(DHT11LIB_VERSION);
}
void loop() {
int chk = <span class="domtooltips">DHT11<span class="domtooltips_tooltip" style="display: none">DHT11/22 is a digital Temperature & Humidity Sensor</span></span>.read(DHT11PIN);
Serial.print("Read sensor: ");
switch (chk)
{
case 0: Serial.println("OK"); break;
case -1: Serial.println("Checksum error"); break;
case -2: Serial.println("Time out error"); break;
default: Serial.println("Unknown error"); break;
}
Serial.print("Humidity (%): ");
Serial.println((float)<span class="domtooltips">DHT11<span class="domtooltips_tooltip" style="display: none">DHT11/22 is a digital Temperature & Humidity Sensor</span></span>.humidity, DEC);
Serial.print("Temperature ( C): ");
Serial.println((float)<span class="domtooltips">DHT11<span class="domtooltips_tooltip" style="display: none">DHT11/22 is a digital Temperature & Humidity Sensor</span></span>.temperature, DEC);
Serial.print("Temperature ( F): ");
Serial.println(<span class="domtooltips">DHT11<span class="domtooltips_tooltip" style="display: none">DHT11/22 is a digital Temperature & Humidity Sensor</span></span>.fahrenheit(), DEC);
lcd.setCursor(0, 0);
lcd.print("H%:");
lcd.print(<span class="domtooltips">DHT11<span class="domtooltips_tooltip" style="display: none">DHT11/22 is a digital Temperature & Humidity Sensor</span></span>.humidity, DEC);
lcd.print(" F:");
printDouble((<span class="domtooltips">DHT11<span class="domtooltips_tooltip" style="display: none">DHT11/22 is a digital Temperature & Humidity Sensor</span></span>.fahrenheit()),100);
lcd.setCursor(0, 1);
DPC= <span class="domtooltips">DHT11<span class="domtooltips_tooltip" style="display: none">DHT11/22 is a digital Temperature & Humidity Sensor</span></span>.dewPoint();
Serial.print("Dew Point ( F): ");
Serial.println((DPC * 1.8) + 32);
Serial.println(DPC);
lcd.print("DP(F): ");
//lcd.print((1.8 * (<span class="domtooltips">DHT11<span class="domtooltips_tooltip" style="display: none">DHT11/22 is a digital Temperature & Humidity Sensor</span></span>.dewPoint(), DEC) + 32));
lcd.print((DPC * 1.8) + 32);
Serial.print("Dew Point ( C): ");
Serial.println(<span class="domtooltips">DHT11<span class="domtooltips_tooltip" style="display: none">DHT11/22 is a digital Temperature & Humidity Sensor</span></span>.dewPoint(), DEC);
Serial.print("Dew PointFast ( C): ");
Serial.println(<span class="domtooltips">DHT11<span class="domtooltips_tooltip" style="display: none">DHT11/22 is a digital Temperature & Humidity Sensor</span></span>.dewPointFast(), DEC);
delay(10000);
}
void printDouble( double val, unsigned int precision){
// prints val with number of decimal places determine by precision
// NOTE: precision is 1 followed by the number of zeros for the desired number of decimial places
// example: printDouble( 3.1415, 100); // prints 3.14 (two decimal places)
Serial.print (int(val)); //prints the int part
Serial.print("."); // print the decimal point
unsigned int frac;
if(val >= 0)
frac = (val - int(val)) * precision;
else
frac = (int(val)- val ) * precision;
Serial.println(frac,DEC) ;
lcd.print(val);
lcd.print(frac,DEC) ;
}
and i need some advice with calling the analog value to make the humidity comparator
if(valor.analogo<50) {
digitalWrite(PIN3,HIGH);
delay(500);
digitalWrite(PIN3,LOW);
if(valor.analogo>70) {
digitalWrite(PIN2,HIGH);
delay(500);
digitalWrite(PIN2,LOW);
}
}