• Hardware model - Wemos D1 mini
• Smartphone IOS
Hi people Im new to programming micro controllers but i have good basic Electricity knowlage
i have a problem i have trayed to build a remote Temp/Hum observartion in the Chicken farm that we have
the first DHT22 Shows good readings for 1-2 days then it stoops but the connection with D1 is still online
and The second DHT22 after i reconnect it it shows some readings for few min then it stop and pops a signal every 10-15 min
first DHT22-----20m(cable)----D1 mini
second DHT 22 --------50m(cable)-------D1 mini
i trayed without and with pullup resistor(4.7k) bettwean +5v and signal on second DHT22 same resoult
any Idea…? i wold like that both are working and reading constantly so i can observe the temp in both sides of my farm
ty
Simply paste your code between ``` If you don’t format your code, your topic can be deleted by moderators.
#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <DHT.h>
// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "xxxxx";
// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "xxxx";
char pass[] = "xxxx";
#define DHT1 D7 //hat digital pin we're connected to
#define DHT2 D6
//#define DHT3 D5
// Uncomment whatever type you're using!
//#define DHTTYPE DHT11 // DHT 11
#define DHTTYPE DHT22 // DHT 22, AM2302, AM2321
//#define DHTTYPE DHT21 // DHT 21, AM2301
DHT dht1(DHT1, DHTTYPE);
DHT dht2(DHT2, DHTTYPE);
//DHT dht3(DHT3, DHTTYPE);
BlynkTimer timer;
// This function sends Arduino's up time every second to Virtual Pin (5).
// In the app, Widget's reading frequency should be set to PUSH. This means
// that you define how often to send data to Blynk App.
void sendSensor()
{
float h1 = dht1.readHumidity();
float t1 = dht1.readTemperature(); // or dht.readTemperature(true) for Fahrenheit
float h2 = dht2.readHumidity();
float t2 = dht2.readTemperature(); // or dht.readTemperature(true) for Fahrenheit
//float h3 = dht3.readHumidity();
//float t3 = dht3.readTemperature(); // or dht.readTemperature(true) for Fahrenheit
if (isnan(h1) || isnan(t1)) {
Serial.println("Failed to read from DHT sensor!1");
//return;
}
if (isnan(h2) || isnan(t2)) {
Serial.println("Failed to read from DHT sensor!2");
//return;
}
// if (isnan(h3) || isnan(t3)) {
// Serial.println("Failed to read from DHT sensor!3");
//return;
//}
// You can send any value at any time.
// Please don't send more that 10 values per second.
Blynk.virtualWrite(V5, h1);
Blynk.virtualWrite(V6, t1);
Blynk.virtualWrite(V7, h2);
Blynk.virtualWrite(V8, t2);
//Blynk.virtualWrite(V9, h3);
//Blynk.virtualWrite(V10, t3);
}
void setup()
{
Serial.begin(9600);
Blynk.begin(auth, ssid, pass);
// You can also specify server:
//Blynk.begin(auth, ssid, pass, "blynk-cloud.com", 80);
//Blynk.begin(auth, ssid, pass, IPAddress(192,168,1,100), 8080);
dht1.begin();
dht2.begin();
//dht3.begin();
// Setup a function to be called every second
timer.setInterval(3000L, sendSensor);
}
void loop()
{
Blynk.run();
timer.run();
}
void loop()
