Tugas Praktikum 1
Nama : Dodhy Kurniawan. Ss Nim : 200206501001
MK : Praktik Sensor dan Transduser Pertanyaan Praktikum:
1. Modifikasi Program sebelumnya agar dapat membaca 4 buah sensor DHT11 dan tampilkan pada serial monitor!
Program :
#include "DHT.h"
#define DHTPIN1 2
#define DHTPIN2 3
#define DHTPIN3 4
#define DHTPIN4 5
#define DHTTYPE DHT11 // DHT 11
DHT dht1(DHTPIN1, DHTTYPE);
DHT dht2(DHTPIN2, DHTTYPE);
DHT dht3(DHTPIN3, DHTTYPE);
DHT dht4(DHTPIN4, DHTTYPE);
void setup() { Serial.begin(9600);
Serial.println("DHTxx test!");
}
void loop() { delay(2000);
float h1 = dht1.readHumidity();
float h2 = dht2.readHumidity();
float h3 = dht3.readHumidity();
float h4 = dht4.readHumidity();
float t1 = dht1.readTemperature();
float t2 = dht2.readTemperature();
float t3 = dht3.readTemperature();
float t4 = dht4.readTemperature();
if (isnan(h1) || isnan(h2)|| isnan (h3) || isnan (h4)|| isnan (t1) || isnan (t2)|| isnan (t3) || isnan (t4)){
Serial.println("Failed to read from DHT sensor!");
return;
}
Serial.print("Humidity1: ");
Serial.print(h1);
Serial.print(" %\t");
Serial.print("Humidity2: ");
Serial.print(h2);
Serial.print(" %\t");
Serial.print("Humidity3: ");
Serial.print(h3);
Serial.print(" %\t");
Serial.print("Humidity4: ");
Serial.print(h4);
Serial.println(" %\t");
Serial.print("Temperature1: ");
Serial.print(t1);
Serial.print(" *C ");
Serial.print("Temperature2: ");
Serial.print(t2);
Serial.print(" *C ");
Serial.print("Temperature3: ");
Serial.print(t3);
Serial.print(" *C ");
Serial.print("Temperature4: ");
Serial.print(t4);
Serial.println(" *C ");
}
Hasil :
2. Ubahlah program agar nilai suhu dan kelembaban dapat ditampilkan ada layar LCD 16x2!
Program :
#include <LiquidCrystal.h>
LiquidCrystal lcd (13,12,11,10,9,8);
#include "DHT.h"
#define DHTPIN1 2
#define DHTPIN2 3
#define DHTPIN3 4
#define DHTPIN4 5
#define DHTTYPE DHT11 // DHT 11
DHT dht1(DHTPIN1, DHTTYPE);
DHT dht2(DHTPIN2, DHTTYPE);
DHT dht3(DHTPIN3, DHTTYPE);
DHT dht4(DHTPIN4, DHTTYPE);
void setup() { lcd.begin(16,2);
Serial.begin(9600);
Serial.println("DHTxx test!");
dht1.begin();
dht2.begin();
dht3.begin();
dht4.begin();
}
void loop() {
delay(2000);
float h1 = dht1.readHumidity();
float h2 = dht2.readHumidity();
float h3 = dht3.readHumidity();
float h4 = dht4.readHumidity();
float t1 = dht1.readTemperature();
float t2 = dht2.readTemperature();
float t3 = dht3.readTemperature();
float t4 = dht4.readTemperature();
if (isnan(h1) || isnan(h2)|| isnan (h3) || isnan (h4)|| isnan (t1) || isnan (t2)|| isnan (t3) || isnan (t4)){
Serial.println("Failed to read from DHT sensor!");
return;
}
Serial.print("Humidity1: ");
Serial.print(h1);
Serial.print(" %\t");
Serial.print("Humidity2: ");
Serial.print(h2);
Serial.print(" %\t");
Serial.print("Humidity3: ");
Serial.print(h3);
Serial.print(" %\t");
Serial.print("Humidity4: ");
Serial.print(h4);
Serial.println(" %\t");
Serial.print("Temperature1: ");
Serial.print(t1);
Serial.print(" *C ");
Serial.print("Temperature2: ");
Serial.print(t2);
Serial.print(" *C ");
Serial.print("Temperature3: ");
Serial.print(t3);
Serial.print(" *C ");
Serial.print("Temperature4: ");
Serial.print(t4);
Serial.println(" *C ");
lcd.setCursor(0,0);
lcd.print("Humidity1: ");
lcd.print(h1);
lcd.print(" %\t");
lcd.print("Humidity2: ");
lcd.print(h2);
lcd.print(" %\t");
lcd.print("Humidity3: ");
lcd.print(h3);
lcd.print(" %\t");
lcd.print("Humidity4: ");
lcd.print(h4);
lcd.println(" %\t");
lcd.print("Temperature1: ");
lcd.print(t1);
lcd.print(" *C ");
lcd.print("Temperature2: ");
lcd.print(t2);
lcd.print(" *C ");
lcd.print("Temperature3: ");
lcd.print(t3);
lcd.print(" *C ");
lcd.print("Temperature4: ");
lcd.print(t4);
lcd.println(" *C ");
} Hasil :
3. Mengapa pada program di atas menggunakan pin Digital (2), apakah bisa digunakan pembacaan pada pin Analog!
Jawab :
karena data yang terkirim pada dht11 berupa data digital yang artinya tidak perlu terhubung ke pin analog pada arduino. Pin digital 2 tidak dapat digunakan untuk pembacaan analog.
4. Berapa waktu yang dibutuhkan oleh sensor DHT agar dapat membaca suhu ruangan yang terbaru!
Jawab :
2000 ms atau 2 s
5. Menurut anda dimana aplikasi penggunaan sensor suhu dalam kehidupan sehari- hari!
Jawab :
a. pengontrol suhu ruangan b. alarm suhu pada open
c. pengontrol suhu inkubator/mesin pemanas telur d. pengontrol suhu akuarium ikan dan reptil
