Water tank water level measurment

Projects made with Blynk
1

HERE IS CODE

// defines pins numbers
const int trigPin = 12;
const int echoPin = 15;
// defines variables
long duration;
int distance;
float h;


#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>


char auth[] = "xxx";


void setup() {
pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
pinMode(echoPin, INPUT); // Sets the echoPin as an Input
Serial.begin(9600); // Starts the serial communication
Blynk.begin(auth, "xxx", "xxx");

}


int data()
{
 // Clears the trigPin
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
// Sets the trigPin on HIGH state for 10 micro seconds
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
// Reads the echoPin, returns the sound wave travel time in microseconds
duration = pulseIn(echoPin, HIGH);
// Calculating the distance
distance= duration*0.034/2;
// Prints the distance on the Serial Monitor
Serial.print("Distance: ");
Serial.println(distance);
delay(10);



Blynk.virtualWrite(1, distance);


return(distance);



}







void loop()
{
    Blynk.run();
   data();
      Blynk.virtualWrite(1, distance);


}
1 Like
2

You don’t want to post your blynk ID and your wifi password in a public forum :wink:

@Dmytro &co - maybe there should be a drive to put these sensitive constants into a separate .h file so they don’t get posted so much?

3

Hi there, This script would be excellent for my project. Im new to Blynk and coding and was trying this sketch on my esp8266-12e module with NodeMCU installed. I dont seem te get a connection with the internet with esp. Blynk app says: “your nodemcu is not in network”. I checked ssid and password and auth, and they are correct. when I put sketch from http://www.instructables.com/id/ESP8266-ESP-12Standalone-Blynk-101/ it works fine. I can toggle a relais with it. Anny suggestions on why this script is not working on my nodemcu?

Thanks already!

below my script im using:

// defines pins numbers
const int trigPin = 5;
const int echoPin = 6;
// defines variables
long duration;
int distance;
float h;


#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>


char auth[] = "xxx";


void setup() {
  pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
  pinMode(echoPin, INPUT); // Sets the echoPin as an Input
  Serial.begin(9600); // Starts the serial communication
  Blynk.begin(auth, "xxx", "xxx");

}


int data()
{
  // Clears the trigPin
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  // Sets the trigPin on HIGH state for 10 micro seconds
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  // Reads the echoPin, returns the sound wave travel time in microseconds
  duration = pulseIn(echoPin, HIGH);
  // Calculating the distance
  distance = duration * 0.034 / 2;
  // Prints the distance on the Serial Monitor
  Serial.print("Distance: ");
  Serial.println(distance);
  delay(10);



  Blynk.virtualWrite(1, distance);


  return (distance);



}


void loop()
{
  Blynk.run();
  data();
  Blynk.virtualWrite(1, distance);


}
4

Hi guys, I got script working. Rookie mistake, power supply didn’t suply enough current. Used a lolin base board and its working fine now.