Prologue
Iโd like to make my own Twitter follower counter box, but all of the codes that I referred are out of date.
So, I code by myself and finally, succeed! ๐
BTY, This is ๐ my twitter, follow me. (Over 30K followers now)
https://twitter.com/kaedeee_you/status/1393835529658015744
Prerequisites
- Wemos D1 mini
- Arduino Software
- 20x4 LCD
- mini size Box
- Glue gun (Optional)
DIY
Wire design, etcโฆ๐
https://www.youtube.com/watch?v=evLzYZYiqXg
Code
//////////////////////////////////////////////
// //
// 20x4 Subscriber Counter for Twitter //
// //
/////////////////////////////////////////////
#include <Arduino.h>
#include <ESP8266WiFi.h>
#include <WiFiClientSecure.h>
#include <ESP8266HTTPClient.h>
#include <WiFiClientSecureBearSSL.h>
// #include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <ArduinoJson.h>
const char* ssid = "XXX"; // SSID of local network
const char* password = "XXX"; // Password on network
String BEARER_TOKEN = "XXX";
String TWITTER_CHANNEL_ID = "XXX"; // Twitter id
long subscribers, subscribersBefore = 0;
LiquidCrystal_I2C lcd(0x27, 20, 4); // Set the LCD I2C address
void setup()
{
lcd.init();
lcd.clear();
lcd.backlight();
Serial.begin(9600);
int cursorPosition = 0;
lcd.setCursor(0, 0);
lcd.print("Connecting ....");
createCustomChars();
// wifi setting
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
lcd.setCursor(cursorPosition, 1);
lcd.print(".");
cursorPosition++;
}
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Connected!");
Serial.println("Connected!");
delay(1000);
}
void loop()
{
int length;
int subscribers = getSubscribers();
if (subscribers != subscribersBefore)
{
lcd.clear();
String subscribersString = String(subscribers);
length = subscribersString.length();
printSubscribers(length, subscribersString);
subscribersBefore = subscribers;
}
delay(60000);
}
byte LT[8] =
{
B01111,
B11111,
B11111,
B11111,
B11111,
B11111,
B11111,
B11111
};
byte UB[8] =
{
B11111,
B11111,
B11111,
B00000,
B00000,
B00000,
B00000,
B00000
};
byte RT[8] =
{
B11110,
B11111,
B11111,
B11111,
B11111,
B11111,
B11111,
B11111
};
byte LL[8] =
{
B11111,
B11111,
B11111,
B11111,
B11111,
B11111,
B11111,
B01111
};
byte LB[8] =
{
B00000,
B00000,
B00000,
B00000,
B00000,
B11111,
B11111,
B11111
};
byte LR[8] =
{
B11111,
B11111,
B11111,
B11111,
B11111,
B11111,
B11111,
B11110
};
byte UMB[8] =
{
B11111,
B11111,
B11111,
B00000,
B00000,
B00000,
B11111,
B11111
};
byte LMB[8] =
{
B11111,
B00000,
B00000,
B00000,
B00000,
B11111,
B11111,
B11111
};
void printSubscribers(int length, String subscribersString)
{
switch (length)
{
case 5: printDigits(subscribersString, 5); printDigits(subscribersString, 4); printDigits(subscribersString, 3); printDigits(subscribersString, 2); printDigits(subscribersString, 1); break;
case 4: printDigits(subscribersString, 4); printDigits(subscribersString, 3); printDigits(subscribersString, 2); printDigits(subscribersString, 1); break;
case 3: printDigits(subscribersString, 3); printDigits(subscribersString, 2); printDigits(subscribersString, 1); break;
case 2: printDigits(subscribersString, 2); printDigits(subscribersString, 1); break;
case 1: printDigits(subscribersString, 1); break;
default: break;
}
}
void printDigits(String subscribersString, int digit)
{
int length = subscribersString.length();
char digitToPrint = subscribersString.charAt(length - digit);
Serial.println(digitToPrint);
switch (digit)
{
case 1: printDigitToScreen(digitToPrint, 17); break;
case 2: printDigitToScreen(digitToPrint, 13); break;
case 3: printDigitToScreen(digitToPrint, 9); break;
case 4: printDigitToScreen(digitToPrint, 5); break;
case 5: printDigitToScreen(digitToPrint, 1); break;
}
}
void printDigitToScreen(char digit, int position)
{
int digitToPrint = digit - '0'; // Convert from char to int
switch (digitToPrint)
{
case 1: digit1(position); break;
case 2: digit2(position); break;
case 3: digit3(position); break;
case 4: digit4(position); break;
case 5: digit5(position); break;
case 6: digit6(position); break;
case 7: digit7(position); break;
case 8: digit8(position); break;
case 9: digit9(position); break;
case 0: digit0(position); break;
}
}
void digit0(int position_x)
{
lcd.setCursor(position_x, 1);
lcd.write((byte)0);
lcd.write(1);
lcd.write(2);
lcd.setCursor(position_x, 2);
lcd.write(3);
lcd.write(4);
lcd.write(5);
}
void digit1(int position_x)
{
lcd.setCursor(position_x, 1);
lcd.write(1);
lcd.write(2);
lcd.setCursor(position_x + 1, 2);
lcd.write(5);
}
void digit2(int position_x)
{
lcd.setCursor(position_x, 1);
lcd.write(6);
lcd.write(6);
lcd.write(2);
lcd.setCursor(position_x, 2);
lcd.write(3);
lcd.write(7);
lcd.write(7);
}
void digit3(int position_x)
{
lcd.setCursor(position_x, 1);
lcd.write(6);
lcd.write(6);
lcd.write(2);
lcd.setCursor(position_x, 2);
lcd.write(7);
lcd.write(7);
lcd.write(5);
}
void digit4(int position_x)
{
lcd.setCursor(position_x, 1);
lcd.write(3);
lcd.write(4);
lcd.write(2);
lcd.setCursor(position_x + 2, 2);
lcd.write(5);
}
void digit5(int position_x)
{
lcd.setCursor(position_x, 1);
lcd.write((byte)0);
lcd.write(6);
lcd.write(6);
lcd.setCursor(position_x, 2);
lcd.write(7);
lcd.write(7);
lcd.write(5);
}
void digit6(int position_x)
{
lcd.setCursor(position_x, 1);
lcd.write((byte)0);
lcd.write(6);
lcd.write(6);
lcd.setCursor(position_x, 2);
lcd.write(3);
lcd.write(7);
lcd.write(5);
}
void digit7(int position_x)
{
lcd.setCursor(position_x, 1);
lcd.write(1);
lcd.write(1);
lcd.write(2);
lcd.setCursor(position_x + 1, 2);
lcd.write((byte)0);
}
void digit8(int position_x)
{
lcd.setCursor(position_x, 1);
lcd.write((byte)0);
lcd.write((byte)6);
lcd.write(2);
lcd.setCursor(position_x, 2);
lcd.write(3);
lcd.write(7);
lcd.write(5);
}
void digit9(int position_x)
{
lcd.setCursor(position_x, 1);
lcd.write((byte)0);
lcd.write((byte)6);
lcd.write((byte)2);
lcd.setCursor(position_x + 2, 2);
lcd.write((byte)5);
}
int getSubscribers()
{
int subscribers = 0;
BearSSL::WiFiClientSecure client;
client.setTimeout(500);
client.setInsecure(); // If you wouldn't use certificate.
String host = "api.twitter.com";
String url = "/2/users/by/username/" + TWITTER_CHANNEL_ID;
String argument = "user.fields=public_metrics";
const int httpPort = 443;
const char* host2 = host.c_str();
if (!client.connect(host2, httpPort)) {
Serial.println("connection failed");
return false;
}
client.print(String("GET ") + url + "?" + argument + " HTTP/1.1\r\n" +
"Host: " + host + "\r\n" +
"Authorization: Bearer " + BEARER_TOKEN + "\r\n" +
"User-Agent: ESP8266/1.0\r\n" +
"Accept: text/plain\r\n" +
"Connection: close\r\n\r\n" +
"\r\n" +
"\0");
client.flush();
unsigned long timeout = micros();
while (client.available() == 0) {
if ( micros() - timeout > 5000000) {
Serial.println(">>> Client Timeout !");
client.stop();
return false;
}
}
String resultJson = "";
while (client.available()) {
resultJson = client.readStringUntil('\r');
}
Serial.println("resultJson: " + resultJson);
DynamicJsonDocument doc(1024);
DeserializationError err = deserializeJson(doc, resultJson);
if ( err != DeserializationError::Ok )
{
Serial.printf("Deserialization Error:%s\n", err.c_str());
return false;
}
JsonObject obj = doc.as<JsonObject>();
subscribers = obj["data"]["public_metrics"]["followers_count"];
Serial.println("subscribers: " + (String)subscribers);
return subscribers;
}
void createCustomChars()
{
lcd.createChar(0, LT);
lcd.createChar(1, UB);
lcd.createChar(2, RT);
lcd.createChar(3, LL);
lcd.createChar(4, LB);
lcd.createChar(5, LR);
lcd.createChar(6, UMB);
lcd.createChar(7, LMB);
}
Good job, bro๐ฆ
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