electronicguru0007

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2

Components

	ESP8266EX ESPRESSIF	x 1
	I2C IIC Serial 128x64 OLED Display Module	x 1

Tools, APP Software Used etc.

arduino IDE

Arduino

Description

Live Instagram Followers Pcb

ESP8266 is capable of functioning reliably in industrial environments, with an operating temperature ranging from –40°C to +125°C. Powered by advanced calibration circuitries, ESP8266 can dynamically remove external circuit imperfections and adapt to changes in external conditions. It is highly-integrated with in-built antenna switches, RF balun, power amplifier, low-noise receive amplifier, filters, and power management modules. ESP8266 adds priceless functionality and versatility to your applications with minimal Printed Circuit Board (PCB) requirements.

Check out the examples for how to use it, no API key needed.

This library is getting the data directly from Instagram, but it is not using their API. The API is pretty complicated to get access tokens for but I found some information here for a way to get JSON from public facing pages

Wireless interfacing, connecting to the web and remote controlling are features that can be very helpful in many projects. ESP-8266 is a low-cost microchip with full TCP/IP (Transmission Control Protocol and Internet Protocol), 32-bit MCU, 10-bit ADC and different interfaces like PWM, HSPI and I2C that enables microcontrollers to connect to the Wi-Fi networks. It is one of the best solutions for adding wifi to projects and (but not the only one.)

ESP-01 is the first module that comes for esp-8266 and it has just two GPIO pin and needs 3.3V for power. It doesn’t have a regulator, so make sure to have a reliable power supply. It doesn’t have a converter, therefore you need USB to TTL convertor. Converter for this module (and also other models of ESP) should be in 3.3V mode. The reason for this is the convertor will make 0 and 1 via pulses, and voltage of these pulses should be recognizable for ESP, so check this before buying. Because of the limited quantity GPIO pins and also their low current (12mA per each one), we may need more pins or more current;

so we can easily use Arduino with a module to access its IO pins (another way to access more GPIO pins is wiring out a very thin wire on the chip to the pin headers you need, but its not a good and safe solution). If you don’t want to use another board, you can design or use a circuit to increase current.

In this project, We want to connect ESP-01 to the Internet and get some data from Instagram pages. Then we send the data to Arduino and after processing it, Arduino changes the location of Servo pointer according to data. Let’s do it.

Circuit

This microchip comes with different types of module like ESP-01, ESP-12 or other development boards and breakouts like NodeMCU devkit, Wemos and Adafruit Huzzah. The difference is their pins, components needed for easier usage and also price. The microchip has 32 pins that 16 pins of it are GPIO; depending on the model, the number of GPIOs provided is different. For ESP-01 it is just two pins but other models like breakouts have all of them. When using ESP-8266,

you will need a serial interface to communicate and program. Simple modules usually don’t have serial converter (FTDI is usually suggested but other converters can be used, too) and it should be provided separately. Regulators, built-in LEDs, and pull-up or down resistors are other features that some models may have; the lowest cost between all of these modules is for ESP-01 and it’s our choice now.

Now its time to upload the ESP-01 code. We want to use Arduino IDE to upload the sketch to ESP. Before uploading the code, you should select ESP board for IDE.

Go to File>Preferences and put http://arduino.esp8266.com/stable/package_esp8266com_index.json in the additional boards. Then download and install it. Now you can see the ESP boards in Tools>Board. Select “Generic ESP8266 Module” and copy the code in a new sketch. Download the “InstagramStats” library and add it to IDE. Note that we have modified the library, So you should download it here. Then you should set USB to TTL Converter as Uploader hardware. Just plug the converter in and set the right port in Tools>Port. It’s ready to Upload.

Code

code

C/C++

#include <Wire.h>                   // Only needed for Arduino 1.6.5 and earlier
#include "SSD1306.h"                // alias for `#include "SSD1306Wire.h"`
#include <WiFi.h>
#include <NTPClient.h>
#include <WiFiUdp.h>
#include <HTTPClient.h>
#include <Adafruit_GFX.h>           // https://github.com/adafruit/Adafruit-GFX-Library
#include "Adafruit_LEDBackpack.h"   // https://github.com/adafruit/Adafruit_LED_Backpack
#include <ArduinoJson.h>            // https://github.com/bblanchon/ArduinoJson
#include "InstagramStats.h"         // https://github.com/witnessmenow/arduino-instagram-stats
#include "JsonStreamingParser.h"    // https://github.com/squix78/json-streaming-parser
#include <WiFiClientSecure.h>

#define NTP_OFFSET  +2  * 60 * 60       // segundos
#define NTP_INTERVAL 60 * 1000          // milissegundos
#define NTP_ADDRESS  "0.pool.ntp.org"   // Url NTP
#define SDA_PIN 5                       // GPIO5 -> SDA
#define SCL_PIN 4                       // GPIO4 -> SCL
#define SSD_ADDRESS 0x3c                // i2c

char string[25];

const char* ssid       = "Your-WIFI-SSID";
const char* password   = "Your-WIFI-Password";

String formattedTime;
String ipStr;
String text;

WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, NTP_ADDRESS, NTP_OFFSET, NTP_INTERVAL);
SSD1306  display(SSD_ADDRESS, SDA_PIN, SCL_PIN);

WiFiClientSecure secureClient;
WiFiClient client;

InstagramStats instaStats(secureClient);

String userName = "Your-INSTAGRAM-username";
String stats;

unsigned long api_delay = 1 * 60000; //time between api requests (1mins)
unsigned long api_due_time;

void setup() 
{
  Serial.begin(115200);
  Serial.println("");
  Serial.println("ESP32 Instagram Stats");
  Serial.println("");

  display.init();
//  display.flipScreenVertically();
  display.setTextAlignment(TEXT_ALIGN_LEFT);
  display.setFont(ArialMT_Plain_10);
  
  connectWiFi();
  timeClient.begin();
  InstagramUserStats response = instaStats.getUserStats(userName);
  text = (String) response.followedByCount;
}

void loop() 
{
  timeClient.update();
  formattedTime = timeClient.getFormattedTime();
  Serial.print("TIME: ");
  Serial.println(formattedTime);
  if(timeClient.getMinutes() == 00)   //updates every hour.
  {
    Serial.print("The number of Instagram followers of user " + userName + " is: ");
    InstagramUserStats response = instaStats.getUserStats(userName);
    Serial.println(response.followedByCount);
    text = (String) response.followedByCount;
  }
  display.clear();
  display.setFont(ArialMT_Plain_24);
  display.drawString(17, 0,  formattedTime);
  display.setFont(ArialMT_Plain_10);
  display.drawString(0, 25,  "Instagram: ");
  display.drawString(60, 25,  userName);
  display.setFont(ArialMT_Plain_24);
  display.drawString(40, 35,  text);
  display.display();
  delay(1000);
}

void connectWiFi(void)
{
  int i;
  Serial.println();
  Serial.print("Connecting to: ");
  Serial.println(ssid);
  display.drawString(2, 10, "Connected to: ");
  display.drawString(1, 25, String(ssid));
  display.display();
  WiFi.begin(ssid, password);
  while ((WiFi.status() != WL_CONNECTED) && i < 100)
  {
    i ++;
    delay(500);
    Serial.print(".");
    display.drawString((3 + i * 2), 35, "." );
    display.display();
  }
  if ( WiFi.status() == WL_CONNECTED)
  {
    IPAddress ip = WiFi.localIP();
    ipStr = String(ip[0]) + '.' + String(ip[1]) + '.' + String(ip[2]) + '.' + String(ip[3]);
    display.clear();
    display.setFont(ArialMT_Plain_16);
    display.drawString(0, 0, "WiFi Connected!");
    display.drawString(0, 25, ipStr);
    Serial.println("");
    Serial.println("WiFi Connedcted.");
    Serial.println("IP address: ");
    Serial.println(WiFi.localIP());
    Serial.print("Subnet Mask: ");
    Serial.println(WiFi.subnetMask());
    Serial.print("Gateway: ");
    Serial.println(WiFi.gatewayIP());
    display.display();
  }
  else
  {
    ipStr = "NOT CONNECTED";
    display.clear();
    display.setFont(ArialMT_Plain_16);
    display.drawString(0, 0,  "WiFi not connected.");
    display.drawString(0, 25, ipStr);
    Serial.println("");
    Serial.println("WiFi not connected.");
    display.display();
  }
  delay(1000);
}

Schematic and Layout

circuit

Screenshot (428).png