ESP8266 Community Forum

Posted: **Tue Nov 10, 2015 2:27 pm**

[youtube]https://www.youtube.com/watch?v=B7YCGIZ6iuY[/youtube]

Posted: **Wed Nov 11, 2015 3:05 am**

You must use just the ID for the video inside the [youtube] tags, not the whole link:

Posted: **Wed Nov 11, 2015 3:27 am**

I've used the esp-01 and Arduino Nano to control an Electric door and a Water heater from internet, using the Thinger platform. The Android application is used to turn ON/OFF the Water heater and to hold open the Electric door for 2 seconds.

This can be done with esp-01 itself and 2 transistors, without Arduino, but I'm planing to upgrade the project and add 2 more devices on it using RF 433mhz modules to communicate to the other room.

Components used

esp8266 code
First I've created a device called "wifi" on Thinger and then uploaded the code to the esp-01:

bojler = water heater
vrata = electric door

Code: Select all

#include <SPI.h>
#include <ESP8266WiFi.h>
#include <ThingerWifi.h>

#define USERNAME "username"
#define DEVICE_ID "deviceid"
#define DEVICE_CREDENTIAL "devicecredentials"

#define SSID "networkName"
#define SSID_PASSWORD "networkPassword"

ThingerWifi thing(USERNAME, DEVICE_ID, DEVICE_CREDENTIAL);

void setup() {
  pinMode(0, OUTPUT);
  pinMode(1, OUTPUT);

  thing.add_wifi(SSID, SSID_PASSWORD);

  // resource input example (i.e. turning on/off a light, a relay, configuring a parameter, etc)
  thing["bojler"] << [](pson& in){ digitalWrite(0, in ? HIGH : LOW); };

  // resource input example (i.e. turning on/off a light, a relay, configuring a parameter, etc)
  thing["vrata"] << [](pson& in){ digitalWrite(2, in ? HIGH : LOW); };
}

void loop() {
  thing.handle();
}

Arduino code
then uploaded the code to the Arduino:

Code: Select all

int bojler = 2;
int vrata = 3;
int sostojba = 0;

void setup() {
  // initialize serial communication at 9600 bits per second:
  Serial.begin(9600);
  pinMode(bojler, OUTPUT);
  pinMode(vrata, OUTPUT);
}

// the loop routine runs over and over again forever:
void loop() {
    digitalWrite(vrata, LOW);
    int pom1 = analogRead(A0);
    int pom2 = analogRead(A1);
    float bojlerV = pom1 * (5.0 / 1023.0);
    float vrataV = pom2 * (5.0 / 1023.0);

    
    if (bojlerV<2)
    {
      digitalWrite(bojler, HIGH);
    }
    else if (bojlerV>3)
    {
      digitalWrite(bojler, LOW);
    }
    
    if (vrataV<2)
    {
      sostojba = 0;
    }
    else if (vrataV>3)
    {
      sostojba++;
    }      
    if (sostojba==10)
    {
      sostojba = 2;
    }
    if (sostojba==1)
    {
      digitalWrite(vrata, HIGH);
      delay(2000);
      digitalWrite(vrata, LOW);
    }
    
    delay(250);
    Serial.print("Bojler napon: ");
    Serial.println(bojlerV);
    Serial.print("Vrata napon: ");
    Serial.println(vrataV);
    Serial.print("Sostojba: ");
    Serial.println(sostojba);
}

And the wiring looks like this

Posted: **Wed Nov 11, 2015 9:50 am**

As you seem to need only two outputs, may I ask why didn't you connect the relays directly to the ESP?

ESP8266 Community Forum

Electric door and a Water heater controlled from Internet

Electric door and a Water heater controlled from Internet

Re: Electric door and a Water heater controlled from Interne

Electric door and a Water heater controlled from Internet

Re: Electric door and a Water heater controlled from Interne