Arduino Uno-ethernet shield-DS18B20 .DHT22

Projects made with Blynk
1

uno-ethernet shield-dht22 ok. how to Make uno-ethernet shield-DS18B20 dallaschip help please project
//dht22 ok

1.png1861Ă—2169 162 KB

2

DS18B20 - OK

2.png505Ă—793 28.1 KB

3

Was your problem solved?

BTW, you can post your code not as images. Just paste it here, select it and press </> button

1 Like
4 
#include "DHT.h" 
#define BLYNK_PRINT Serial // Enables Serial Monitor
#include <SPI.h>
#include <Ethernet.h>
#include <BlynkSimpleEthernet.h>
#define DHTPIN 7 // The pin you connect to
#define DHTTYPE DHT22   // DHT 11 Change this if you have a DHT22
DHT dht(DHTPIN, DHTTYPE); // Change this to 
#include <SimpleTimer.h>
SimpleTimer timer;
// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "xxxxxxxxx";
void setup()
{
  Serial.begin(9600);
  Blynk.begin(auth);
  timer.setInterval(2000, sendDHT);
}

void sendDHT()
{
//Read the Temp and Humidity from DHT
  float h = dht.readHumidity();
  float t = dht.readTemperature();
  int hum = (int) h;
  int tem = (int) t;
//Write values to V04 and V05
  Blynk.virtualWrite(4, hum);
  Blynk.virtualWrite(5, tem);
}
void loop()
{
  Blynk.run();
  timer.run();
}
5 
#include <OneWire.h>
#include <DallasTemperature.h>
#include <Ethernet.h>
#include <BlynkSimpleEthernet.h>
#include <SimpleTimer.h>
#include <SPI.h>
//Data wire plugged to pin 7 (temp sensor)
#define ONE_WIRE_BUS 7
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
char auth[] = "xxxxxxxxxx";

SimpleTimer timer;

void setup() 
{
  Serial.begin(9600);
 Blynk.begin(auth);
  sensors.begin();

  timer.setInterval(3000, readTemp);
}



void readTemp()
{
  sensors.requestTemperatures();
  float floatTempC = sensors.getTempCByIndex(0);
  char t_buffer[15];
  dtostrf(floatTempC, 8, 9, t_buffer);
  Blynk.virtualWrite(5, t_buffer);
}
void loop()
{
  Blynk.run();
  timer.run();
}
6

I guess, "DHTPIN 7 " and Ethernet pin are confusing them.
You may change “DHTPIN 7” to “DHTPIN 8”.

7

How would you add another ds18b20 sensor to your sketch?. I tried doing that but I’m not at that level yet.

8

http://forum.arduino.cc/index.php?topic=43535.0

This has some interesting information.

You should check out the example Dallas sketch from the Arduino library. It has two examples. One with a simple bus, a.k.a. all sensors on a seperate line (Multiple_simple example) and a Multiple example which deals with all devices on one bus. It’s a but more complicated, but it should work OK.

9

Thanx i got it working. Is it possible to use blink with bmp 180 ?

10

I don’t see why not. It’s a simple I2C device which should work perfectly fine with the Arduino and hence with Blynk.