News tickertape news feed on matrix display

Hardware UNO R4 UNO R4 WiFi
1

Clone this repository:

git clone https://github.com/yourusername/arduino-uno-r4-wifi-news-scroller.git

            Open the project in the Arduino IDE.
2

Hi @michaelbusfield. I tried following your instructions and they don't work:

$ git clone https://github.com/yourusername/arduino-uno-r4-wifi-news-scroller.git

Cloning into 'arduino-uno-r4-wifi-news-scroller'...
remote: Repository not found.
fatal: repository 'https://github.com/yourusername/arduino-uno-r4-wifi-news-scroller.git/' not found

Is "arduino-uno-r4-wifi-news-scroller" your own project, or is this something you found on the Internet?

The "yourusername" GitHub username looks like a placeholder. There is a GitHub user of that name, but they don't have any repositories or any recent activity. I suspect this is a coincidence (any common username is already in use since there are over 100 million users on GitHub) rather than The "yourusername" user actually being the one who created the "arduino-uno-r4-wifi-news-scroller" project you are referring to.

3

this is not my project
sorry
try

then look in wfi news

4

I see:

@kd5vmf please fix this false information in your project.

@michaelbusfield the purpose of your post is not clear to me.

Were you hoping to get assistance with using this "Arduino UNO R4 WiFi News Scroller" project?

5

this program works fine - but gives US news

does anyone know how to modify to gat UK news tickertape?

6

Inside wifinews.h is this:

https://github.com/KD5VMF/Arduino-UNO-R4-Wifi/blob/921141159c9e7e81808abcb17fbf9173e5465058/Wifi-News/secrets.h

Inside secrets.h is this:

https://newsapi.org/

Which links to this:

https://newsapi.org/docs/endpoints/top-headlines

See "US" here... maybe you want "GB"

GET https://newsapi.org/v2/top-headlines?country=us&apiKey=API_KEY
7

Here is a version of the program that prints to a Max7219 display

#include <MD_Parola.h>
#include <MD_MAX72XX.h>
#include <SPI.h>
#include <WiFiS3.h>
#include "secrets.h" // Include the secrets file

// Define hardware type and pins
#define HARDWARE_TYPE MD_MAX72XX::FC16_HW
#define MAX_DEVICES 4 // Number of cascaded 8x8 LED matrices (8x32 display)
#define CS_PIN 10 // CS pin for the LED matrix

MD_Parola matrix = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);

WiFiClient client;

const char* server = "newsapi.org";
String apiEndpoint = "/v2/top-headlines?country=us&apiKey=" + String(NEWS_API_KEY);

void setup() {
Serial.begin(115200); // Start serial communication at 115200 baud rate
Serial.println("Serial started at 115200");

// Initialize the matrix
matrix.begin();
matrix.setIntensity(5); // Set brightness level (0-15)
Serial.println("Matrix initialized");

WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
Serial.print("Connecting to WiFi");
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("\nConnected to WiFi!");
Serial.print("IP Address: ");
Serial.println(WiFi.localIP());
}

void loop() {
if (WiFi.status() == WL_CONNECTED) {
Serial.println("Connecting to News API...");

if (client.connect(server, 80)) {
  Serial.println("Connected to News API server");

  // Send HTTP request to the server with User-Agent header
  client.print(String("GET ") + apiEndpoint + " HTTP/1.1\r\n" +
               "Host: " + server + "\r\n" +
               "User-Agent: Arduino/1.0\r\n" +
               "Connection: close\r\n\r\n");

  String response = "";
  while (client.connected() || client.available()) {
    if (client.available()) {
      char c = client.read();
      response += c;
    }
  }

  Serial.println("HTTP response received:");
  Serial.println(response);  // Print the full response for debugging

  // Find the start of the payload (after the HTTP headers)
  int payloadStart = response.indexOf("\r\n\r\n") + 4;
  String jsonResponse = response.substring(payloadStart);

  Serial.println("Extracted JSON payload:");
  Serial.println(jsonResponse);  // Print the payload for debugging

  // Extract and scroll headlines
  String headlines = extractHeadlines(jsonResponse);
  if (headlines.length() > 0) {
    Serial.println("Headlines extracted:");
    Serial.println(headlines);
    scrollText(headlines.c_str());  // Scroll the extracted headlines on the matrix
  } else {
    Serial.println("No headlines found in the response");
  }

  client.stop();  // Disconnect
} else {
  Serial.println("Failed to connect to News API server");
}

} else {
Serial.println("WiFi is not connected");
}

delay(60000); // Fetch news every 60 seconds
}

// Function to extract headlines from the JSON payload
String extractHeadlines(String json) {
String headlines = "";
int startIdx = 0;

// Parse the JSON to extract each headline
while ((startIdx = json.indexOf(""title":"", startIdx)) >= 0) {
startIdx += 9; // Move past the "title":" part
int endIdx = json.indexOf(""", startIdx);
if (endIdx >= 0) {
String headline = json.substring(startIdx, endIdx);
headlines += headline + " *** "; // Add separator between headlines
startIdx = endIdx + 1;
} else {
break;
}
}

return headlines;
}

// Function to scroll text on the LED matrix
void scrollText(const char* text) {
matrix.displayText(text, PA_CENTER, 100, 50, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
while (!matrix.displayAnimate()) {
// Wait until the scrolling is finished
}
}

8

Please, wrap that code in backticks... ``` code ```