RGB LED Matrix as Tickertape display issue - Please help!

seal_team_ricks · December 30, 2021, 2:21am

Hardware-

NodeMCU ESP8266
WS2812B RGB LED Strips

Hi guys,

I'm trying to get my DIY tickertape to work to display various data on my favorite stocks but I've run into a problem I'm hoping someone can shed some light on for me. I have a 73x7 RGB LED matrix that I want the data to scroll on length wise but for some reason it is displaying rotated 90 degrees and only on the last 7 pixels of the 72px length. Ive attached a drawing and the code in hopes of clarifying my issue better. I'm unsure if this is a wiring problem or a coding problem or both. Just to note...Ive replaced my actual ssid and password for wifi in the code with something else. Thanks in advance for any help!

#include <ESP8266WiFi.h>        //Use ESP8266 functions  
#include <WiFiClientSecure.h>
#include <ESP8266HTTPClient.h>
#include <WiFiClient.h>




#include <Wire.h>  // Only needed for Arduino 1.6.5 and earlier


#include <Adafruit_NeoPixel.h>

const char* ssid = "YourSSID";
const char* password = "YourPass";        //WIFI Password
const char* host = "api.thingspeak.com";  //We read the data from this host
const int httpPortRead = 80;                           //   3QGEILIH1SL6A5S8

const char* url1 = "/apps/thinghttp/send_request?api_key=SFWVSJMPV624142E";     //AR
const char* url2 = "/apps/thinghttp/send_request?api_key=VXMEYW042PHGSALF";     //SOFI
const char* url3 = "/apps/thinghttp/send_request?api_key=O5CS23OT0MBXURHW";     //APPL
const char* url4 = "/apps/thinghttp/send_request?api_key=KK5MR5DR7YG0NRT4";     //TSLA
const char* url5 = "/apps/thinghttp/send_request?api_key=1UXKI2BTNEMSVW01";     //CDW
int To_remove;      //There are some irrelevant data on the string and here's how I keep the index
//of those characters
String Amount, Increase, Ratio, Data_Raw, Data_Raw_1, Data_Raw_2, Data_Raw_3;
WiFiClient client;      //Create a WiFi client and http client
HTTPClient http;


#define stripPin 12
#define stripPinB 14
#define ledTotal 510 // zero indexed, so one less than you need. I.e. 50 leds = 49 here
#define ledTotalB 0 // zero indexed...
#define rowSize 72 // zero indexed...
#define columnSize 6 // zero indexed...
#define charWidth 6 // ** one indexed **

byte displayOutput[columnSize + 1] = {0};
byte displayColors[columnSize + 1] = {0};
byte currentStatus = 0; // 0 = off, 1 = on
unsigned int maxLoad = 0;
int flag = 0;
int val = 0; // val will be used to store the state
// of the input pin
int old_val = 0; // this variable stores the previous
// value of "val"
int state = 0; // 0 = LED off and 1 = LED on
// was 68 with lower case chars, 42 without -- 40 without l/r arrow -- 42 WITH PLUS AND DOT
byte displayLetters[44][charWidth] = {  // [A] = chars/digits contained in array, [B] = charWidth (no need to add 1, as was 'one indexed' at #define)
  {0x3e, 0x51, 0x49, 0x45, 0x3e}, // 0 // , 0x00
  {0x00, 0x42, 0x7f, 0x40, 0x00}, // 1
  {0x42, 0x61, 0x51, 0x49, 0x46}, // 2
  {0x21, 0x41, 0x45, 0x4b, 0x31}, // 3
  {0x18, 0x14, 0x12, 0x7f, 0x10}, // 4
  {0x27, 0x45, 0x45, 0x45, 0x39}, // 5
  {0x3c, 0x4a, 0x49, 0x49, 0x30}, // 6
  {0x01, 0x71, 0x09, 0x05, 0x03}, // 7
  {0x36, 0x49, 0x49, 0x49, 0x36}, // 8
  {0x06, 0x49, 0x49, 0x29, 0x1e}, // 9

  {0x7e, 0x11, 0x11, 0x11, 0x7e}, // A
  {0x7f, 0x49, 0x49, 0x49, 0x36}, // B
  {0x3e, 0x41, 0x41, 0x41, 0x22}, // C
  {0x7f, 0x41, 0x41, 0x22, 0x1c}, // D
  {0x7f, 0x49, 0x49, 0x49, 0x41}, // E
  {0x7f, 0x09, 0x09, 0x09, 0x01}, // F
  {0x3e, 0x41, 0x49, 0x49, 0x7a}, // G
  {0x7f, 0x08, 0x08, 0x08, 0x7f}, // H
  {0x00, 0x41, 0x7f, 0x41, 0x00}, // I
  {0x20, 0x40, 0x41, 0x3f, 0x01}, // J
  {0x7f, 0x08, 0x14, 0x22, 0x41}, // K
  {0x7f, 0x40, 0x40, 0x40, 0x40}, // L
  {0x7f, 0x02, 0x0c, 0x02, 0x7f}, // M
  {0x7f, 0x04, 0x08, 0x10, 0x7f}, // N
  {0x3e, 0x41, 0x41, 0x41, 0x3e}, // O
  {0x7f, 0x09, 0x09, 0x09, 0x06}, // P
  {0x3e, 0x41, 0x51, 0x21, 0x5e}, // Q
  {0x7f, 0x09, 0x19, 0x29, 0x46}, // R
  {0x46, 0x49, 0x49, 0x49, 0x31}, // S
  {0x01, 0x01, 0x7f, 0x01, 0x01}, // T
  {0x3f, 0x40, 0x40, 0x40, 0x3f}, // U
  {0x1f, 0x20, 0x40, 0x20, 0x1f}, // V
  {0x3f, 0x40, 0x38, 0x40, 0x3f}, // W
  {0x63, 0x14, 0x08, 0x14, 0x63}, // X
  {0x07, 0x08, 0x70, 0x08, 0x07}, // Y
  {0x61, 0x51, 0x49, 0x45, 0x43}, // Z

  {0x00, 0x00, 0x00, 0x00, 0x00}, // space
  {0x10, 0x18, 0x1c, 0x18, 0x10}, // new up arrow
  {0x04, 0x0c, 0x1c, 0x0c, 0x04}, // new down arrow
  {0x08, 0x08, 0x08, 0x08, 0x08}, // dash / maintain
  {0x08, 0x08, 0x3E, 0x08, 0x08}, // plus
  {0x00, 0x60, 0x60, 0x00, 0x00}, // full stop
  {0x26, 0x16, 0x08, 0x34, 0x32}, // %
  {0x24, 0x2a, 0xff, 0x2a, 0x12}// $
};

const int stockQty = 17; // this is the amount of different stock values to be contained, *!* ONE indexed *!*
const int stockStepQty = 5; // *!* ONE indexed *!*
int stockStep = 0;


Adafruit_NeoPixel strip = Adafruit_NeoPixel(ledTotal + 1, stripPin, NEO_RGB + NEO_KHZ800);

void setup() {

  Serial.begin(115200);
  WiFi.mode(WIFI_STA);
  WiFi.disconnect();             //Disconnect and reconnect to the Wifi you set
  delay(1000);
  WiFi.begin(ssid, password);
  Serial.println("Connected to the WiFi network");   //Display feedback on the serial monitor
  Serial.println(WiFi.localIP());

  if (WiFi.status() != WL_CONNECTED)    //In case the Wifi connexion is lost
  {

    WiFi.disconnect();
    delay(1000);

    WiFi.begin(ssid, password);
    Serial.println("Reconnecting to WiFi..");
    delay(10000);
  }
  strip.begin();
  strip.show();

}


void stock_AR() {

  if (http.begin(host, httpPortRead, url1)) {

    int httpCode = http.GET();                //Check feedback if there's a response
    if (httpCode > 0)
    {
      if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY)
      {

        Data_Raw = http.getString();   //Here we store the raw data string


        Data_Raw_1 = Data_Raw;
        To_remove = Data_Raw_1.indexOf(">");                      //I look for the position of this symbol ">"
        Data_Raw_1.remove(0, To_remove + 1);                     //I remove it and everything that's before

        To_remove = Data_Raw_1.indexOf(">");                      //I look for the position of this symbol ">"
        Data_Raw_1.remove(0, To_remove + 1);

        To_remove = Data_Raw_1.indexOf("<");                     //I look for the position of this symbol ">"
        Data_Raw_1.remove(To_remove, Data_Raw_1.length());


        Amount = Data_Raw_1;
        Serial.print("C: ");  //I choosed to display it on the serial monitor to help you debug
        Serial.println(Amount);


        Data_Raw_2 = Data_Raw;
        To_remove = Data_Raw_2.indexOf(">");
        Data_Raw_2.remove(0, To_remove + 1);


        To_remove = Data_Raw_2.indexOf("</td>");
        Data_Raw_2.remove(0, To_remove + 5);

        To_remove = Data_Raw_2.indexOf(">");
        Data_Raw_2.remove(0, To_remove + 1);


        To_remove = Data_Raw_2.indexOf("</td>");
        Data_Raw_2.remove(To_remove, Data_Raw_2.length());

        Increase = Data_Raw_2;
        Serial.print("D: ");
        Serial.println(Increase);




        Data_Raw_3 = Data_Raw;
        To_remove = Data_Raw_3.indexOf("</td>");
        Data_Raw_3.remove(0, To_remove + 5);


        To_remove = Data_Raw_3.indexOf("</td>");
        Data_Raw_3.remove(0, To_remove + 5);

        To_remove = Data_Raw_3.indexOf(">");
        Data_Raw_3.remove(0, To_remove + 1);


        To_remove = Data_Raw_3.indexOf("<");
        Data_Raw_3.remove(To_remove, Data_Raw_3.length());


        Ratio = Data_Raw_3;

        Serial.print("R: ");
        Serial.println(Ratio);

      }
    }
    else //If we can't get data
    {
      Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
    }

    http.end();
  }

}



void stock_SOFI() {

  if (http.begin(host, httpPortRead, url2)) {

    int httpCode = http.GET();                //Check feedback if there's a response
    if (httpCode > 0)
    {
      if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY)
      {

        Data_Raw = http.getString();   //Here we store the raw data string


        Data_Raw_1 = Data_Raw;
        To_remove = Data_Raw_1.indexOf(">");                      //I look for the position of this symbol ">"
        Data_Raw_1.remove(0, To_remove + 1);                     //I remove it and everything that's before

        To_remove = Data_Raw_1.indexOf(">");                      //I look for the position of this symbol ">"
        Data_Raw_1.remove(0, To_remove + 1);

        To_remove = Data_Raw_1.indexOf("<");                     //I look for the position of this symbol ">"
        Data_Raw_1.remove(To_remove, Data_Raw_1.length());


        Amount = Data_Raw_1;
        Serial.print("C: ");  //I choosed to display it on the serial monitor to help you debug
        Serial.println(Amount);


        Data_Raw_2 = Data_Raw;
        To_remove = Data_Raw_2.indexOf(">");
        Data_Raw_2.remove(0, To_remove + 1);


        To_remove = Data_Raw_2.indexOf("</td>");
        Data_Raw_2.remove(0, To_remove + 5);

        To_remove = Data_Raw_2.indexOf(">");
        Data_Raw_2.remove(0, To_remove + 1);


        To_remove = Data_Raw_2.indexOf("</td>");
        Data_Raw_2.remove(To_remove, Data_Raw_2.length());

        Increase = Data_Raw_2;
        Serial.print("D: ");
        Serial.println(Increase);

        Data_Raw_3 = Data_Raw;
        To_remove = Data_Raw_3.indexOf("</td>");
        Data_Raw_3.remove(0, To_remove + 5);


        To_remove = Data_Raw_3.indexOf("</td>");
        Data_Raw_3.remove(0, To_remove + 5);

        To_remove = Data_Raw_3.indexOf(">");
        Data_Raw_3.remove(0, To_remove + 1);


        To_remove = Data_Raw_3.indexOf("<");
        Data_Raw_3.remove(To_remove, Data_Raw_3.length());


        Ratio = Data_Raw_3;

        Serial.print("R: ");
        Serial.println(Ratio);

      }
    }
    else //If we can't get data
    {
      Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
    }

    http.end();

  }

}

void stock_TSLA() {
  if (http.begin(host, httpPortRead, url3)) {

    int httpCode = http.GET();                //Check feedback if there's a response
    if (httpCode > 0)
    {
      if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY)
      {

        Data_Raw = http.getString();   //Here we store the raw data string


        Data_Raw_1 = Data_Raw;
        To_remove = Data_Raw_1.indexOf(">");                      //I look for the position of this symbol ">"
        Data_Raw_1.remove(0, To_remove + 1);                     //I remove it and everything that's before

        To_remove = Data_Raw_1.indexOf(">");                      //I look for the position of this symbol ">"
        Data_Raw_1.remove(0, To_remove + 1);

        To_remove = Data_Raw_1.indexOf("<");                     //I look for the position of this symbol ">"
        Data_Raw_1.remove(To_remove, Data_Raw_1.length());


        Amount = Data_Raw_1;
        Serial.print("C: ");  //I choosed to display it on the serial monitor to help you debug
        Serial.println(Amount);


        Data_Raw_2 = Data_Raw;
        To_remove = Data_Raw_2.indexOf(">");
        Data_Raw_2.remove(0, To_remove + 1);


        To_remove = Data_Raw_2.indexOf("</td>");
        Data_Raw_2.remove(0, To_remove + 5);

        To_remove = Data_Raw_2.indexOf(">");
        Data_Raw_2.remove(0, To_remove + 1);


        To_remove = Data_Raw_2.indexOf("</td>");
        Data_Raw_2.remove(To_remove, Data_Raw_2.length());

        Increase = Data_Raw_2;
        Serial.print("D: ");
        Serial.println(Increase);




        Data_Raw_3 = Data_Raw;
        To_remove = Data_Raw_3.indexOf("</td>");
        Data_Raw_3.remove(0, To_remove + 5);


        To_remove = Data_Raw_3.indexOf("</td>");
        Data_Raw_3.remove(0, To_remove + 5);

        To_remove = Data_Raw_3.indexOf(">");
        Data_Raw_3.remove(0, To_remove + 1);


        To_remove = Data_Raw_3.indexOf("<");
        Data_Raw_3.remove(To_remove, Data_Raw_3.length());


        Ratio = Data_Raw_3;

        Serial.print("R: ");
        Serial.println(Ratio);

      }
    }
    else //If we can't get data
    {
      Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
    }

    http.end();

  }
}

void stock_AAPL() {
  if (http.begin(host, httpPortRead, url4)) {

    int httpCode = http.GET();                //Check feedback if there's a response
    if (httpCode > 0)
    {
      if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY)
      {

        Data_Raw = http.getString();   //Here we store the raw data string


        Data_Raw_1 = Data_Raw;
        To_remove = Data_Raw_1.indexOf(">");                      //I look for the position of this symbol ">"
        Data_Raw_1.remove(0, To_remove + 1);                     //I remove it and everything that's before

        To_remove = Data_Raw_1.indexOf(">");                      //I look for the position of this symbol ">"
        Data_Raw_1.remove(0, To_remove + 1);

        To_remove = Data_Raw_1.indexOf("<");                     //I look for the position of this symbol ">"
        Data_Raw_1.remove(To_remove, Data_Raw_1.length());


        Amount = Data_Raw_1;
        Serial.print("C: ");  //I choosed to display it on the serial monitor to help you debug
        Serial.println(Amount);


        Data_Raw_2 = Data_Raw;
        To_remove = Data_Raw_2.indexOf(">");
        Data_Raw_2.remove(0, To_remove + 1);


        To_remove = Data_Raw_2.indexOf("</td>");
        Data_Raw_2.remove(0, To_remove + 5);

        To_remove = Data_Raw_2.indexOf(">");
        Data_Raw_2.remove(0, To_remove + 1);


        To_remove = Data_Raw_2.indexOf("</td>");
        Data_Raw_2.remove(To_remove, Data_Raw_2.length());

        Increase = Data_Raw_2;
        Serial.print("D: ");
        Serial.println(Increase);




        Data_Raw_3 = Data_Raw;
        To_remove = Data_Raw_3.indexOf("</td>");
        Data_Raw_3.remove(0, To_remove + 5);


        To_remove = Data_Raw_3.indexOf("</td>");
        Data_Raw_3.remove(0, To_remove + 5);

        To_remove = Data_Raw_3.indexOf(">");
        Data_Raw_3.remove(0, To_remove + 1);


        To_remove = Data_Raw_3.indexOf("<");
        Data_Raw_3.remove(To_remove, Data_Raw_3.length());


        Ratio = Data_Raw_3;

        Serial.print("R: ");
        Serial.println(Ratio);

      }
    }
    else //If we can't get data
    {
      Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
    }

    http.end();

  }
}

void stock_CDW() {
  if (http.begin(host, httpPortRead, url5)) {

    int httpCode = http.GET();                //Check feedback if there's a response
    if (httpCode > 0)
    {
      if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY)
      {

        Data_Raw = http.getString();   //Here we store the raw data string


        Data_Raw_1 = Data_Raw;
        To_remove = Data_Raw_1.indexOf("</sup>");                      //I look for the position of this symbol ">"
        Data_Raw_1.remove(0, To_remove + 6);                     //I remove it and everything that's before

        To_remove = Data_Raw_1.indexOf(">");                      //I look for the position of this symbol ">"
        Data_Raw_1.remove(0, To_remove + 1);

        To_remove = Data_Raw_1.indexOf("<");                     //I look for the position of this symbol ">"
        Data_Raw_1.remove(To_remove, Data_Raw_1.length());


        Amount = Data_Raw_1;
        Serial.print("C: ");  //I choosed to display it on the serial monitor to help you debug
        Serial.println(Amount);


        Data_Raw_2 = Data_Raw;
        To_remove = Data_Raw_2.indexOf("</i>");
        Data_Raw_2.remove(0, To_remove + 4);


        To_remove = Data_Raw_2.indexOf(">");
        Data_Raw_2.remove(0, To_remove + 1);

        To_remove = Data_Raw_2.indexOf(">");
        Data_Raw_2.remove(0, To_remove + 1);


        To_remove = Data_Raw_2.indexOf("<");
        Data_Raw_2.remove(To_remove, Data_Raw_2.length());

        Increase = Data_Raw_2;
        Serial.print("D: ");
        Serial.println(Increase);




        Data_Raw_3 = Data_Raw;
        To_remove = Data_Raw_3.indexOf("</i>");
        Data_Raw_3.remove(0, To_remove + 4);


        To_remove = Data_Raw_3.indexOf(">");
        Data_Raw_3.remove(0, To_remove + 1);

        To_remove = Data_Raw_3.indexOf(">");
        Data_Raw_3.remove(0, To_remove + 1);

        To_remove = Data_Raw_3.indexOf(">");
        Data_Raw_3.remove(0, To_remove + 1);

        To_remove = Data_Raw_3.indexOf(">");
        Data_Raw_3.remove(0, To_remove + 1);

        To_remove = Data_Raw_3.indexOf(">");
        Data_Raw_3.remove(0, To_remove + 1);

        To_remove = Data_Raw_3.indexOf(">");
        Data_Raw_3.remove(0, To_remove + 1);


        To_remove = Data_Raw_3.indexOf("</bg-quote>");
        Data_Raw_3.remove(To_remove, Data_Raw_3.length());


        Ratio = Data_Raw_3;

        Serial.print("R: ");
        Serial.println(Ratio);

      }
    }
    else //If we can't get data
    {
      Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
    }

    http.end();

  }
}


String titil;
String inputString;
void loop() {

  stock_AR();
  titil = "AR";
  displayled();

  stock_SOFI();
  titil = "SOFI";
  displayled();

  stock_TSLA();
  titil = "TSLA";
  displayled();

  stock_AAPL();
  titil = "AAPL";
  displayled();

  stock_CDW();
  titil = "CDW";
  displayled();
}

char b[10];
char c[10];

void displayled() {


  strcpy(b, Increase.c_str());
  strcpy(c, Amount.c_str());
  if ((b[0] == '-') && (c[0] == '$')) {
    inputString = (titil + " " + Amount + "|" + Increase + " " + "|" + Ratio + " ");
  }
  else if ((b[0] == '-') && (c[0] != '$')) {
    inputString = (titil + " " + "$" + Amount + " " + "|" + Increase + " " + "|" + Ratio + " ");
  }
  else if ((b[0] != '-') && (c[0] == '$')) {
    inputString = (titil + " " + Amount + "^" + "+" + Increase + " " + "^" + "+" + Ratio + " ");
  }
  else if ((b[0] != '-') && (c[0] != '$')) {
    inputString = (titil + " " + "$" + Amount + " " + "^" + "+" + Increase + " " + "^" + "+" + Ratio + " ");
  }

  for (int i = 0; i < inputString.length(); i++) {
    char currentChar = inputString[i];
    int currentCol, colorMode;// = int(colString[i]) - 48; // minus 48 because int("0") will return the ascii value of char '0' (48)

    if ((currentChar >= 'A') && (currentChar <= 'Z')) {
      currentCol = 0;
    } /*else if ((currentChar == '+') || (currentChar == '-')) {
      currentCol = colorMode;
    } *//*else if((currentChar >= '0') && (currentChar <= '9') ||(currentChar == '%')){
      colorMode = 3;
      currentCol = colorMode;
    }*/else if ((currentChar == '^') || (currentChar >= '0') && (currentChar <= '9') && (currentChar == '%')) {
      colorMode = 2;
      currentCol = colorMode;
    } else if ((currentChar == '|') || (currentChar >= '0') && (currentChar <= '9') && (currentChar == '%')) {
      colorMode = 1;
      currentCol = colorMode;
    }
    else if ((currentChar == '$') || (currentChar >= '0') && (currentChar <= '9') && (currentChar == '%')) {
      colorMode = 4;
      currentCol = colorMode;
    }

    int indexValue;
    if ((currentChar >= '0') && (currentChar <= '9')) indexValue = currentChar - 48; // 0-9
    else if ((currentChar >= 'A') && (currentChar <= 'Z')) indexValue = currentChar - 55; // upper case
    //else if ((currentChar >= 'a') && (currentChar <= 'z')) indexValue = currentChar - 61; // lower case , check that these are in the right place / the offset is correct, as i may have put the array chunk back in the wrong place!!
    else if ((currentChar == ' ')) indexValue = 36; // space, was 62 when lower case chars
    else if ((currentChar == '^')) indexValue = 37; // up arrow, was 63 when lower case chars
    else if ((currentChar == '|')) indexValue = 38; // down arrow, was 64 when lower case chars
    else if ((currentChar == '%')) indexValue = 42;
    //    else if ((currentChar == '<')) indexValue = 39; // left arrow, was 65 when lower case chars
    //    else if ((currentChar == '>')) indexValue = 40; // right arrow, was 66 when lower case chars
    else if ((currentChar == '-')) indexValue = 39; // dash / maintain, was 67 when lower case chars, 41 with l/r arrows
    else if ((currentChar == '+')) indexValue = 40; // plus
    else if ((currentChar == '.')) indexValue = 41; // full stop
    else if ((currentChar == '$')) indexValue = 43; // full stop

    for (int x = 0; x < charWidth; x++) {
      if (currentStatus == 0) currentStatus = 1;
      else if (currentStatus == 1) currentStatus = 0;
      setStatusIndicator(currentStatus);

      nudgeColumns(displayLetters[indexValue][x], currentCol); // inputCols[i]); // strip.Color(0,0,255));
      displayUpdate(0);

      delay(50);
    }
    nudgeColumns(0, 0); // - 1 might break things here? or make things go white due to the lookup default being white
    if (currentStatus == 0) currentStatus = 1;
    else if (currentStatus == 1) currentStatus = 0;
    setStatusIndicator(currentStatus);
    displayUpdate(0);
    delay(50); // this will be 200 as per the rest once confirmed that the double jump issue is done!
  }
}

int getIntLength(int value) {
  // Function created by "zed_0xff" at: https://stackoverflow.com/a/3068412/7905386
  int l = !value;
  while (value) {
    l++;
    value /= 10;
  }
  return l;
}

int getMappedPixel(int columnID, int rowID) {
  int z;

  z = columnSize - columnID;
  if (columnID % 2) z++;

  z = z * (rowSize + 1);
  if (columnID % 2) z = z - rowID - 1;
  else z = z + rowID;

  if (z >= 256) z++;
  return z;
}

void setMappedColor(int columnID, int rowID, long pixelColor) {
  int mappedPixel = getMappedPixel(columnID, rowID);

  if (mappedPixel < ledTotal) {
    strip.setPixelColor(mappedPixel, pixelColor);
  }
  else {
    mappedPixel = mappedPixel - ledTotal;
    strip.setPixelColor(mappedPixel, pixelColor);
  }
}

void colorAll(long color) {
  for (int i = 0; i <= rowSize; i++) {
    for (int j = 0; j <= columnSize; j++) {
      setMappedColor(j, i, color);
    }
  }
}

void convertToBits(byte inputValue, int outputArray[]) {
  if (inputValue & 0x80) outputArray[0] = 1; // not used?
  if (inputValue & 0x40) outputArray[0] = 1;
  if (inputValue & 0x20) outputArray[1] = 1;
  if (inputValue & 0x10) outputArray[2] = 1;
  if (inputValue & 0x08) outputArray[3] = 1;
  if (inputValue & 0x04) outputArray[4] = 1;
  if (inputValue & 0x02) outputArray[5] = 1;
  if (inputValue & 0x01) outputArray[6] = 1;
}

void displayUpdate(long backColor) {
  colorAll(backColor);
  for (int i = 0; i <= columnSize; i++) {
    int columnData[rowSize + 1] = {0};
    convertToBits(displayOutput[i], columnData);

    for (int j = 0; j <= rowSize; j++) {
      if (columnData[rowSize - j] == 1) setMappedColor(i, j, colorLookup(displayColors[i])); // was displayColors[i][j] before memory save
    }
  }

  strip.show();
  //stripB.show();

}

void nudgeColumns(byte newData, byte newColor) {
  for (int i = 0; i < columnSize; i++) {
    displayOutput[i] = displayOutput[i + 1];
    for (int j = 0; j <= rowSize; j++) {
      displayColors[i] = displayColors[i + 1];
    }
  }
  displayOutput[columnSize] = newData;

  if (newColor >= 0) { // created for memory save
    for (int k = 0; k <= rowSize; k++) {
      displayColors[columnSize] = newColor;
    }
  }
}

long colorLookup(int inputColor) {
  long outputColor = 0;
  switch (inputColor) {
    case 0:
      outputColor = strip.Color(255, 255, 255); // white
      break;
    case 1:
      outputColor = strip.Color(255, 0, 0); // red
      break;
    case 2:
      outputColor = strip.Color(0, 255, 0); // green
      break;
    case 3:
      outputColor = strip.Color(0, 0, 255); // blue
      break;
    case 4:
      outputColor = strip.Color(255, 255, 0); // yellow/amber
      break;
    case 5:
      outputColor = strip.Color(0, 255, 255); // cyan
      break;
    case 6:
      outputColor = strip.Color(255, 0, 255); // magenta
      break;
    default:
      outputColor = strip.Color(255, 255, 255); // white
      break;
  }

  return outputColor;
}

void setStatusIndicator(byte inputStatus) {
  if (inputStatus == 0) {
    digitalWrite(13, LOW);
  } else {
    digitalWrite(13, HIGH);
  }
} +

strong text

seal_team_ricks · December 30, 2021, 3:37pm

So I've discovered the problem. My LED strips need to be wired and oriented in this fashion...

I am still curious if anyone knows how I can change the code to get it to work with the way my strips are wired up so that I don't have to deconstruct/reconstruct the whole project...Thanks!

guix · December 30, 2021, 7:55pm

Hello

I suggest that you start over, remove everything that is about WiFi or string formatting

First don't use this :

#define ledTotal 510 // zero indexed, so one less than you need. I.e. 50 leds = 49 here
#define rowSize 72 // zero indexed...
#define columnSize 6 // zero indexed...

This is wrong, everything in C/C++ is "zero-indexed", if an array size is 3, valid indices are 0, 1 and 2. You have buffer overflow errors in your code

Use this instead:

const uint8_t rowSize = 73;
const uint8_t columnSize = 7;
const uint16_t ledTotal = rowSize * columnSize;

or preferably :

const uint8_t rowsCount = 7;
const uint8_t columnsCount = 73;
const uint16_t ledsCount = rowsCount * columnsCount;

Then for example if you want to loop all columns, you do this:

for ( uint8_t i = 0; i < columnsCount; i++ ) // from 0 to 72

Start small, get one pixel to scroll perfectly, then one character.. then "hello world"... etc

But you can also use a library for controlling your matrix

Paul_B · December 30, 2021, 11:46pm

Not quite!

Two very major blunders in that diagram.

One shows that the power is connected to the "3V3" pin on the NodeMCU. The LEDs operate on 5 V.

The second is that while it is intended to demonstrate the particular "zig-zag" arrangements of the individual strips, a major problem is power reticulation. To that end, where the connections swap around on the edge of the display, all ground and all 5 V lines must connect all the way along that edge.

And the 5 V power from your 30 Amp supply is fed with suitable gauge twin cable to the middle of one edge of the array. The 5 V can then be fed back - along with the ground and data wire from the data input point back to the "5V" ("Vin") terminal of your NodeMCU to power it.

You may also need a 74HCT14 as a level converter to drive the 5 V pixel chain reliably from your 3.3 V logic.

seal_team_ricks · December 31, 2021, 1:54am

Thanks for all the pointers @guix and @Paul_B! Ill definitely be looking over each one you guys mentioned. I got some free time today and decided to re-orient my rows of strips into columns of strips (Just testing the beginning portion of planned ticker display) I got it working almost the way I want it to be besides a text orientation issue that seems like it should be an easy fix for someone with more knowledge of coding than me. I'm including a link to a YouTube video showing exactly what the Matrix is doing. Once again, thanks for all your help in advance, it's much appreciated!

ESP8266 RGB LED Ticker Tape Test on small initial section of display.

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