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What is Industry 4.0?

  What is Industry 4.0 and what are some of the technologies that are driving it? Industry 4.0 is a term that refers to the fourth industrial revolution, which is characterized by the integration of digital technologies, such as artificial intelligence, cloud computing, big data, the internet of things, robotics, and 3D printing, into the manufacturing sector. Industry 4.0 aims to create smart factories that are more efficient, flexible, and responsive to customer needs and market changes. Some of the technologies that are enabling Industry 4.0 are: - Artificial intelligence (AI) : AI is the ability of machines to perform tasks that normally require human intelligence, such as reasoning, learning, decision-making, and problem-solving. AI can help optimize production processes, improve product quality, reduce costs, and enhance customer satisfaction. - Cloud computing: Cloud computing is delivering computing services, such as servers, storage, databases, software, and analytics, ov...
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Home Automation

A smart system made by using Node MCU dev board.

What is Node MCU?

NodeMCU is an open-source firmware for which open-source prototyping board designs are available. The name "NodeMCU" combines "node" and "MCU" (micro-controller unit). The term "NodeMCU" strictly speaking refers to the firmware rather than the associated development kits. Both the firmware and prototyping board designs are open source.

Requirments

  • Node MCU
  • 4 channel relay
  • toggle switch * 4
  • Hi-links (220v ac to 5v dc)

Circuit Diagram


Program

#ifdef ENABLE_DEBUG
       #define DEBUG_ESP_PORT Serial
       #define NODEBUG_WEBSOCKETS
       #define NDEBUG
#endif

#include <Arduino.h>
#include <ESP8266WiFi.h>
#include "SinricPro.h"
#include "SinricProSwitch.h"

#include <map>

#define WIFI_SSID         "your wifi name"    
#define WIFI_PASS         "your wifi pass"
#define APP_KEY           "this code is provided in sinric pro web hook"      // Should look like "de0bxxxx-1x3x-4x3x-ax2x-5dabxxxxxxxx"
#define APP_SECRET        "this code is provided in sinric pro web hook"   // Should look like "5f36xxxx-x3x7-4x3x-xexe-e86724a9xxxx-4c4axxxx-3x3x-x5xe-x9x3-333d65xxxxxx"

//Enter the device IDs here
#define device_ID_1   "xxxxxxxxxxxxxxxxxxxxxxxx"
#define device_ID_2   "xxxxxxxxxxxxxxxxxxxxxxxx"
#define device_ID_3   "xxxxxxxxxxxxxxxxxxxxxxxx"
#define device_ID_4   "xxxxxxxxxxxxxxxxxxxxxxxx"

// define the GPIO connected with Relays and switches
#define RelayPin1 5  //D1
#define RelayPin2 4  //D2
#define RelayPin3 14 //D5
#define RelayPin4 12 //D6

#define SwitchPin1 10  //SD3
#define SwitchPin2 0   //D3
#define SwitchPin3 13  //D7
#define SwitchPin4 3   //RX

#define wifiLed   16   //D0

// comment the following line if you use a toggle switches instead of tactile buttons
//#define TACTILE_BUTTON 1

#define BAUD_RATE   9600

#define DEBOUNCE_TIME 250

typedef struct {      // struct for the std::map below
  int relayPIN;
  int flipSwitchPIN;
} deviceConfig_t;


// this is the main configuration
// please put in your deviceId, the PIN for Relay and PIN for flipSwitch
// this can be up to N devices...depending on how much pin's available on your device ;)
// right now we have 4 devicesIds going to 4 relays and 4 flip switches to switch the relay manually
std::map<String, deviceConfig_t> devices = {
    //{deviceId, {relayPIN,  flipSwitchPIN}}
    {device_ID_1, {  RelayPin1, SwitchPin1 }},
    {device_ID_2, {  RelayPin2, SwitchPin2 }},
    {device_ID_3, {  RelayPin3, SwitchPin3 }},
    {device_ID_4, {  RelayPin4, SwitchPin4 }}    
};

typedef struct {      // struct for the std::map below
  String deviceId;
  bool lastFlipSwitchState;
  unsigned long lastFlipSwitchChange;
} flipSwitchConfig_t;

std::map<int, flipSwitchConfig_t> flipSwitches;    // this map is used to map flipSwitch PINs to deviceId and handling debounce and last flipSwitch state checks
                                                  // it will be setup in "setupFlipSwitches" function, using informations from devices map

void setupRelays() {
  for (auto &device : devices) {           // for each device (relay, flipSwitch combination)
    int relayPIN = device.second.relayPIN; // get the relay pin
    pinMode(relayPIN, OUTPUT);             // set relay pin to OUTPUT
    digitalWrite(relayPIN, HIGH);
  }
}

void setupFlipSwitches() {
  for (auto &device : devices)  {                     // for each device (relay / flipSwitch combination)
    flipSwitchConfig_t flipSwitchConfig;              // create a new flipSwitch configuration

    flipSwitchConfig.deviceId = device.first;         // set the deviceId
    flipSwitchConfig.lastFlipSwitchChange = 0;        // set debounce time
    flipSwitchConfig.lastFlipSwitchState = true;     // set lastFlipSwitchState to false (LOW)--

    int flipSwitchPIN = device.second.flipSwitchPIN;  // get the flipSwitchPIN

    flipSwitches[flipSwitchPIN] = flipSwitchConfig;   // save the flipSwitch config to flipSwitches map
    pinMode(flipSwitchPIN, INPUT_PULLUP);                   // set the flipSwitch pin to INPUT
  }
}

bool onPowerState(String deviceId, bool &state)
{
  Serial.printf("%s: %s\r\n", deviceId.c_str(), state ? "on" : "off");
  int relayPIN = devices[deviceId].relayPIN; // get the relay pin for corresponding device
  digitalWrite(relayPIN, !state);             // set the new relay state
  return true;
}

void handleFlipSwitches() {
  unsigned long actualMillis = millis();                                          // get actual millis
  for (auto &flipSwitch : flipSwitches) {                                         // for each flipSwitch in flipSwitches map
    unsigned long lastFlipSwitchChange = flipSwitch.second.lastFlipSwitchChange;  // get the timestamp when flipSwitch was pressed last time (used to debounce / limit events)

    if (actualMillis - lastFlipSwitchChange > DEBOUNCE_TIME) {                    // if time is > debounce time...

      int flipSwitchPIN = flipSwitch.first;                                       // get the flipSwitch pin from configuration
      bool lastFlipSwitchState = flipSwitch.second.lastFlipSwitchState;           // get the lastFlipSwitchState
      bool flipSwitchState = digitalRead(flipSwitchPIN);                          // read the current flipSwitch state
      if (flipSwitchState != lastFlipSwitchState) {                               // if the flipSwitchState has changed...
#ifdef TACTILE_BUTTON
        if (flipSwitchState) {                                                    // if the tactile button is pressed
#endif      
          flipSwitch.second.lastFlipSwitchChange = actualMillis;                  // update lastFlipSwitchChange time
          String deviceId = flipSwitch.second.deviceId;                           // get the deviceId from config
          int relayPIN = devices[deviceId].relayPIN;                              // get the relayPIN from config
          bool newRelayState = !digitalRead(relayPIN);                            // set the new relay State
          digitalWrite(relayPIN, newRelayState);                                  // set the trelay to the new state

          SinricProSwitch &mySwitch = SinricPro[deviceId];                        // get Switch device from SinricPro
          mySwitch.sendPowerStateEvent(!newRelayState);                            // send the event
#ifdef TACTILE_BUTTON
        }
#endif      
        flipSwitch.second.lastFlipSwitchState = flipSwitchState;                  // update lastFlipSwitchState
      }
    }
  }
}

void setupWiFi()
{
  Serial.printf("\r\n[Wifi]: Connecting");
  WiFi.begin(WIFI_SSID, WIFI_PASS);

  while (WiFi.status() != WL_CONNECTED)
  {
    Serial.printf(".");
    delay(250);
  }
  digitalWrite(wifiLed, LOW);
  Serial.printf("connected!\r\n[WiFi]: IP-Address is %s\r\n", WiFi.localIP().toString().c_str());
}

void setupSinricPro()
{
  for (auto &device : devices)
  {
    const char *deviceId = device.first.c_str();
    SinricProSwitch &mySwitch = SinricPro[deviceId];
    mySwitch.onPowerState(onPowerState);
  }

  SinricPro.begin(APP_KEY, APP_SECRET);
  SinricPro.restoreDeviceStates(true);
}

void setup()
{
  Serial.begin(BAUD_RATE);

  pinMode(wifiLed, OUTPUT);
  digitalWrite(wifiLed, HIGH);

  setupRelays();
  setupFlipSwitches();
  setupWiFi();
  setupSinricPro();
}

void loop()
{
  SinricPro.handle();
  handleFlipSwitches();
}

Note: 

Github reference link:  just-innovative-bro/home-automation-based-on-ai: A smart system made by using Node mcu dev board (github.com)


Youtube video


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