So since the last time many isues was fixed but not this one , it keeps getting vack its prettty simple i plug it in it work and than all of a suden the matrix starts to brake down and goes crazy any idea how to fix it ? Iam using 5v 3a powwer supply to power board , 10 of these matrix dht 11 and i2c
Here is tge code
// Libraries
#include <SPI.h>
#include <Adafruit_GFX.h>
#include <Max72xxPanel.h>
#include <DHT.h> // Correct header file for the Adafruit DHT sensor library
#include <Wire.h>
#include <RTClib.h>
// Constants
const int photoCell = A0; // Analog pin for the photocell
DHT dht(9, DHT11); // DHT11 sensor connected to pin 9
RTC_DS1307 rtc; // Real-time clock object
char daysOfTheWeek[7][12] = {"Nedela","Pondelok", "Utorok", "Streda", "Stvrtok", "Piatok", "Sobota"};
const int pinCS = 10; // Chip select pin for the LED matrix
const int numberOfHorizontalDisplays = 10; // Number of horizontal LED displays
const int numberOfVerticalDisplays = 1; // Number of vertical LED displays
const int wait = 20; // Delay between scrolling updates in milliseconds
const int spacer = 1; // Space between characters in the matrix display
const int width = 5 + spacer; // Character width including spacer
Max72xxPanel matrix = Max72xxPanel(pinCS, numberOfHorizontalDisplays, numberOfVerticalDisplays);
// Variables
int chk, length, brLevel, photoCellValue, count = 0; // General-purpose variables
float hum = 0, temp = 0; // Humidity and temperature readings
String msg; // Message to display
boolean autoBR = true; // Auto-brightness control flag
unsigned long previousMillis = 0; // Timer for content updates
unsigned long lastDHTReadMillis = 0; // Timer for DHT11 readings
const unsigned long DHTReadInterval = 2000; // Minimum interval between DHT11 reads
String tickerText = "made in Matejovce "; // Ticker text for scrolling
void setup() {
Serial.begin(9600); // Initialize Serial communication for debugging
rtc.begin(); // Initialize RTC
// rtc.adjust(DateTime(2017, 03, 21, 19, 47, 0)); // Uncomment to set RTC time
matrix.setIntensity(1); // Set initial brightness to low (1 out of 15)
dht.begin(); // Initialize DHT sensor
}
void loop() {
initMatrix(); // Set up matrix positions and rotations
unsigned long currentMillis = millis(); // Get the current time
// Update thermometer and photoCell variables at appropriate intervals
if (currentMillis - lastDHTReadMillis >= DHTReadInterval) {
lastDHTReadMillis = currentMillis;
hum = dht.readHumidity(); // Read humidity
temp = dht.readTemperature(); // Read temperature
controlBR(); // Adjust brightness based on photocell or manual setting
}
// Show content at regular intervals
if (currentMillis - previousMillis >= 1000) {
previousMillis = currentMillis;
count++; // Increment counter for seconds
}
// Display different content based on the current counter value
if (count >= 0 && count < 5) {
time(); // Display time
}
else if (count >= 5 && count < 8) {
today(); // Display day of the week
}
else if (count >= 8 && count < 11) {
date(); // Display date
}
else if (count >= 11 && count < 14) {
temperature(); // Display temperature
}
else if (count >= 14 && count < 17) {
humidity(); // Display humidity
}
else if (count >= 17) {
scroll(); // Scroll ticker text
count = 0; // Reset counter
}
}
// Brightness control function
void controlBR() {
if (autoBR) {
photoCellValue = analogRead(photoCell); // Read photocell value
photoCellValue = map(photoCellValue, 1023, 0, 0, 13); // Map to brightness levels
matrix.setIntensity(photoCellValue); // Adjust matrix brightness
}
else {
matrix.setIntensity(brLevel); // Set manual brightness level
}
}
// Display current time
void time() {
DateTime now = rtc.now(); // Get current time
int HH = now.hour();
int MM = now.minute();
int SS = now.second();
msg = (HH < 10) ? "0" + String(HH) + ":" : String(HH) + ":"; // Format hours
msg += (MM < 10) ? "0" + String(MM) + ":" : String(MM) + ":"; // Format minutes
msg += (SS < 10) ? "0" + String(SS) : String(SS); // Format seconds
length = msg.length() * width;
matrix.setCursor((numberOfHorizontalDisplays * 8 - length) / 2, 0); // Center text
matrix.fillScreen(LOW);
matrix.print(msg); // Print time
matrix.write(); // Update matrix
}
// Display day of the week
void today() {
DateTime now = rtc.now(); // Get current date
msg = daysOfTheWeek[now.dayOfTheWeek()]; // Get day of the week
length = msg.length() * width;
matrix.setCursor((numberOfHorizontalDisplays * 8 - length) / 2, 0); // Center text
matrix.fillScreen(LOW);
matrix.print(msg); // Print day
matrix.write(); // Update matrix
}
// Display date
void date() {
DateTime now = rtc.now(); // Get current date
int dd = now.day();
int mm = now.month();
int yyyy = now.year();
msg = (dd < 10) ? "0" + String(dd) + ":" : String(dd) + ":"; // Format day
msg += (mm < 10) ? "0" + String(mm) + ":" : String(mm) + ":"; // Format month
msg += String(yyyy); // Add year
length = msg.length() * width;
matrix.setCursor((numberOfHorizontalDisplays * 8 - length) / 2, 0); // Center text
matrix.fillScreen(LOW);
matrix.print(msg); // Print date
matrix.write(); // Update matrix
}
// Display temperature
void temperature() {
msg = "Temp: " + String(temp) + "oC"; // Format temperature
length = msg.length() * width;
matrix.setCursor((numberOfHorizontalDisplays * 8 - length) / 2, 0); // Center text
matrix.fillScreen(LOW);
matrix.print(msg); // Print temperature
matrix.write(); // Update matrix
}
// Display humidity
void humidity() {
msg = "Hum: " + String(hum) + "%"; // Format humidity
length = msg.length() * width;
matrix.setCursor((numberOfHorizontalDisplays * 8 - length) / 2, 0); // Center text
matrix.fillScreen(LOW);
matrix.print(msg); // Print humidity
matrix.write(); // Update matrix
}
// Scroll ticker text
void scroll() {
for (int i = 0; i < width * tickerText.length() + matrix.width() - 1 - spacer; i++) {
matrix.fillScreen(LOW); // Clear matrix
int letter = i / width; // Determine the current letter
int x = (matrix.width() - 1) - i % width; // Calculate x position
int y = (matrix.height() - 8) / 2; // Center text vertically
while (x + width - spacer >= 0 && letter >= 0) {
if (letter < tickerText.length()) {
matrix.drawChar(x, y, tickerText[letter], HIGH, LOW, 1); // Draw character
}
letter--;
x -= width; // Move to the next character position
}
matrix.write(); // Update matrix
delay(wait - 10); // Reduced delay for smoother scrolling
}
}
// Initialize matrix positions and rotations
void initMatrix() {
// Set positions for each display module
matrix.setPosition(0, 9, 0);
matrix.setPosition(1, 8, 0);
matrix.setPosition(2, 7, 0);
matrix.setPosition(3, 6, 0);
matrix.setPosition(4, 5, 0);
matrix.setPosition(5, 4, 0);
matrix.setPosition(6, 3, 0);
matrix.setPosition(7, 2, 0);
matrix.setPosition(8, 1, 0);
matrix.setPosition(9, 0, 0);
// Set rotations for each display module
matrix.setRotation(0, 0);
matrix.setRotation(1, 0);
matrix.setRotation(2, 0);
matrix.setRotation(3, 0);
matrix.setRotation(4, 0);
}
