Overview
Things
Story

Overview
Block Diagram
Install all Software needed
Software Details
Hardware Details

Published February 24, 2018 © GPL3+

Remote Module for Arduino Home Controller

Light activate with Arduino Home Controller without use of relays and cables, only using wifi, with this little module based in Wemos D1.

IntermediateFull instructions provided16 hours3,253

Remote Module for Arduino Home Controller

Things used in this project

Hardware components

Espressif Wemos D1 Mini

K3020P Optocoupler, Phototriac Output, Non-Zero Crossing

Triac BT136 series E sensitive gate

Resistor 1k ohm

Capacitor 100 nF

Resistor 170 ohm

3 Pins Connector

SparkFun Breadboard Power Supply 5V/3.3V

Bulb Socket

Bulb box

Software apps and online services

Arduino IDE

Hand tools and fabrication machines

Soldering iron (generic)

Story

Overview

My Arduino Home Controller activated by Alexa initial project, see in this Url, let us connect some devices to Internet and control thems using Amazon Alexa Skill.

If you need control some lights, you needed connect each bulb socket to each relay, but if you need control remote light rooms and we don't use cables only using wifi, you could make this project.

Using Wemos D1, or any other type of ESP8266, you can create some accessories and connect them to our controller using wifi network.

This accessory reemplace the light interrupt present in the wall with all necessary to turn on or off any bulb from 10 Watts to 100 Watts.

Remote module connected to Arduino Home Controller

Block Diagram

In the block diagram picture we can see the two main components of this project:

1. The Arduino Home Controller devices see this url

2. The Wemos D1 remote module connected to PubNub(c) cloud and receive commands, and this time it is configured to received command:

"Alexa, Ask Arduino home to turn room light On"

"Alexa, Ask Arduino home to turn room light Off"

Block Diagram

Install all Software needed

The only software need to remote module is the sketch file ArduinoHomeRemoteModule.ino

Before upload sketch to your wemo D1 module you need make some changes in the file:

Line 18 change with your Wifi SSID

Line 19 change with your Wifi Password

Change your Wifi SSID and Password

Upload to Wemos D1 using Arduino IDE, and if you activated the line 13, Debug was activated and you can see if module was connected in Monitor Serie Window.

DEBUG option line

Debug at monitor serie window

Software Details

You can download all files for this project from my Github site.

Folder contains explain

ArduinoHomeRemoteModule --> ino file and libraries for Wemos D1 remote module.

Some libraries files to help connection to MQTT PubSub Client.

At line 45 you can see that our module respond Topic Topic_room if you change the topic the module respond to another command topic defined at Arduino Home Controller see url :

Topic_room 
Topic_livingroom
Topic_kitchen
Topic_garage

Hardware Details

The basic component is the Wemos D1 or any other ESP8266 device, it have an internal wifi module, is programmed using Arduino IDE have have some digitals pins, in our project we use D6 pin.

D6 pin activate the Optoisolator Triac driver MOC 3021 and it activate de Triac BT136 to activate the Bulb light connected to 110 volts.

We organize all electronics in three modules:

Wemos D1 mini

Control logic module with optoisolator and Triac

5 Volts Power Supply module

1 / 6 • Three modules

We put inside aluminium bulb box the three modules and connect our bulb light.

1 / 4 • Three modules inside aluminium box

1 / 2 • Arduino Home Controller, Echo dot and Remote Module

Code

ArduinoHomeRemoteModule.ino

// Arduino Home Remote Module Wifi
// v1.0
//
// Copyright (C)2018 Jose Cruz. All right reserved
// web: https://sites.google.com/view/raeiot/home
//
#include <ESP8266WiFi.h>
#include "PubSubClient.h"
#include <string.h>


//#define isDEBUG

// Your Amazon email linked skill
#define MyID "YOUR AMAZON EMAIL"

const char *ssid = "YOUR WIFI SSID"; // Wifi SSID
const char *pass = "YOUR WIFI PASSWORD";   // Wifi password
const char* clientId = "pub-c-e93def7f-95aa-475a-aa60-cc3cd32ee8a7/sub-c-ec04dbbc-0893-11e8-8e75-cea83f8405bb/e73766bf-3d70-4280-8395-001a08ebeb72";

//PubNub server MQTT
const int mqtt_port = 1883;
const char* mqtt_server = "mqtt.pndsn.com";
// Suscribe topic
const char* topic = "AHC_IOT_01";

WiFiClient wclient; 
PubSubClient client(wclient, mqtt_server, mqtt_port);

//Define gpio pins from WemosD1
#define room_light D6   

// Callback to process all msgs received
void callback(const MQTT::Publish &pub)
{
  String msg = "";   // All messages from MQTT
  msg = pub.payload_string();
  msg.trim();
#ifdef isDEBUG
  Serial.println(msg);
  Serial.println(pub.topic());
#endif
  // If is my ID and Topic_room detect command On or Off
  if ((msg.indexOf(MyID) > 0) && (msg.indexOf("\"topic\":\"Topic_room\"") > 0)) {
    digitalWrite(room_light, msg.indexOf("\"command\":\"on\"") > 0 ? HIGH : LOW);
  }
}

//Reconnect to MQTT broker if lost connection
void reconnect() {
  // Loop until we're reconnected
  while (!client.connected()) {
#ifdef isDEBUG    
    Serial.print("Attempting MQTT connection...");
    // Attempt to connect
#endif    
    if (client.connect(clientId)) {
#ifdef isDEBUG       
      Serial.println("MQTT broker connected");
#endif      
      client.subscribe(topic);
#ifdef isDEBUG       
      Serial.println("Suscribe to topic at MQTT broker Ok ...");
#endif
    } else {
#ifdef isDEBUG            
      Serial.println(" Failed connect, try again in 5 seconds");
#endif      
      // Wait 5 seconds before retrying
      delay(5000);
    }
  }
}



void setup()
{
  delay(2000);
#ifdef isDEBUG      
  Serial.begin(115200);
  Serial.println("Init Arduino Home Remote Module v1...");
#endif

  pinMode(room_light, OUTPUT);
  digitalWrite(room_light, LOW);

  client.set_callback(callback);

  if (WiFi.status() != WL_CONNECTED)
  {
#ifdef isDEBUG
    Serial.print("Connecting to ");
    Serial.println(ssid);
#endif
    WiFi.mode(WIFI_STA);
    WiFi.begin(ssid, pass);
    //if (WiFi.waitForConnectResult() != WL_CONNECTED)
    //  return;
#ifdef isDEBUG
    Serial.println("WiFi connected");
#endif
  }
}

void loop()
{
  if (!client.connected()) {
    reconnect();
  }
  client.loop();
}

Credits

Jose Cruz

5 projects • 15 followers

Remote Module for Arduino Home Controller