Ows wiki at 21:36, 26 August 2025

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Ows wiki at 21:36, 26 August 2025

2025-08-26T21:36:08Z

Ows wiki at 21:35, 26 August 2025

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Ows wiki at 21:09, 28 May 2025

2025-05-28T21:09:47Z

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Ows wiki: Created page with " Internet_Clock-XIAO-OLED_Display_1.12

 #include  #include  #include  #include  #include  #include    // Repla..."

2025-05-28T20:51:43Z

Created page with " Internet_Clock-XIAO-OLED_Display_1.12 <pre> #include <U8g2lib.h> #include <Wire.h> #include <WiFi.h> #include <NTPClient.h> #include <WiFiUdp.h> #include <time.h> // Repla..."

New page

Internet_Clock-XIAO-OLED_Display_1.12

<pre>
#include <U8g2lib.h>
#include <Wire.h>
#include <WiFi.h>
#include <NTPClient.h>
#include <WiFiUdp.h>
#include <time.h>

// Replace with your WiFi credentials
const char* ssid = "Your_wifi_SSID";
const char* password = "Wifi_password";

// Initialize OLED display (128x64 SH1106)
// U8G2_SH1106_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);

// Initialize OLED display (128x64 SSD1306) Ideaspark ESP32 0,96 OLED Board
U8G2_SSD1306_128X64_NONAME_F_SW_I2C
u8g2(U8G2_R0, /* clock=*/ 22, /* data=*/ 21, /* reset=*/ U8X8_PIN_NONE);

// NTP Client Setup
WiFiUDP ntpUDP;
// NTPClient timeClient(ntpUDP, "pool.ntp.org", 19800, 3600000); // Timezone offset (19800 seconds = UTC +5:30) Colombo
NTPClient timeClient(ntpUDP, "pool.ntp.org", 3600, 3600000); // Timezone offset (3600 seconds = UTC +1:00) Zurich

void setup() {
// Start serial communication for debugging
Serial.begin(115200);

// Connect to Wi-Fi
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Connecting to WiFi...");
}
Serial.println("Connected to WiFi");

// Initialize the OLED
u8g2.begin();

// Start the NTP client
timeClient.begin();
//timeClient.setTimeOffset(19800); // Indian Standard Time colombo (UTC +5:30)
timeClient.setTimeOffset(3600); // Europe Standard Time Zurich (UTC +1:00)
}

void loop() {
timeClient.update(); // Update time from NTP server

// Get current time in seconds
unsigned long currentEpoch = timeClient.getEpochTime();

// Convert epoch time (unsigned long) to time_t (signed long)
time_t currentTime = (time_t)currentEpoch;

// Convert time to time structure
struct tm* timeInfo;
timeInfo = localtime(&currentTime); // Convert to time structure

// Extract time components
int hours = timeInfo->tm_hour;
int minutes = timeInfo->tm_min;
int seconds = timeInfo->tm_sec;

// Extract date components
int day = timeInfo->tm_mday;
int month = timeInfo->tm_mon + 1; // tm_mon is zero-based, so add 1
int year = timeInfo->tm_year + 1900; // tm_year is years since 1900, so add 1900

// Extract day of the week (0 = Sunday, 1 = Monday, etc.)
String daysOfWeek[] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};
String dayOfWeek = daysOfWeek[timeInfo->tm_wday];

// Clear the display
u8g2.clearBuffer();

// Set font size for the clock
u8g2.setFont(u8g2_font_ncenB18_tr); // Larger font (18px)

// Format the time
String timeStr = String(hours) + ":" + (minutes < 10 ? "0" + String(minutes) : String(minutes)) + ":" + (seconds < 10 ? "0" + String(seconds) : String(seconds));

// Calculate the width of the time text to center it
int textWidth = u8g2.getStrWidth(timeStr.c_str());

// Set the cursor position to center the time text
int x = (128 - textWidth) / 2; // Center horizontally on 128x64 screen
int y = 24; // Set Y position to the middle of the screen for time

// Draw the time at the center of the screen
u8g2.setCursor(x, y);
u8g2.print(timeStr);

// Set font size for the date
u8g2.setFont(u8g2_font_ncenB10_tr); // Smaller font (10px) for the date

// Format the date as DD/MM/YYYY with leading zeroes if necessary
String dayStr = (day < 10) ? "0" + String(day) : String(day);
String monthStr = (month < 10) ? "0" + String(month) : String(month);
String dateStr = dayStr + "/" + monthStr + "/" + String(year);

// Calculate the width of the date text to center it
int dateTextWidth = u8g2.getStrWidth(dateStr.c_str());

// Set the cursor position to center the date text
int dateX = (128 - dateTextWidth) / 2; // Center horizontally
int dateY = 40; // Move the date 2px up from the previous position

// Draw the date below the time
u8g2.setCursor(dateX, dateY);
u8g2.print(dateStr);

// Set font size for the day of the week
u8g2.setFont(u8g2_font_ncenB10_tr); // Smaller font (10px) for the day of the week

// Calculate the width of the day of the week text to center it
int dayOfWeekWidth = u8g2.getStrWidth(dayOfWeek.c_str());

// Set the cursor position to center the day of the week text
int dayOfWeekX = (128 - dayOfWeekWidth) / 2; // Center horizontally
int dayOfWeekY = 56; // Set Y position below the date text

// Draw the day of the week below the date
u8g2.setCursor(dayOfWeekX, dayOfWeekY);
u8g2.print(dayOfWeek);

// Send the buffer to the display
u8g2.sendBuffer();

delay(1000); // Update every second
}
</pre>

@@ Line 9: / Line 9: @@
 XIAO-RA4M1 <br>
 OLED Display 1.12 (v2.1) 128 × 128 pixels, Port <b>I2c</b> <br>
 ----

@@ Line 8: / Line 8: @@
 Grove Base for XIAO <br>
 XIAO-RA4M1 <br>
-OLED Display 1.12 (v2.1) 128 × 128 pixels, Port <b>I2c</b>
+OLED Display 1.12 (v2.1) 128 × 128 pixels, Port <b>I2c</b> <br>
 ----

@@ Line 5: / Line 5: @@
 [[File:XIAO RA4M1 4.PNG|125px]]
 [[File:OLED Display 96x96 recto.jpg|150px]]
 <pre>

← Older revision		Revision as of 21:09, 28 May 2025
Line 1:		Line 1:

	Internet_Clock-XIAO-OLED_Display_1.12		Internet_Clock-XIAO-OLED_Display_1.12
		+
		+	[[File:Grove Base for XIAO 1.PNG\|200px]]
		+	[[File:XIAO RA4M1 4.PNG\|125px]]
		+	[[File:OLED Display 96x96 recto.jpg\|150px]]

	<pre>		<pre>

Internet Clock-XIAO-OLED Display 1.12 - Revision history

Ows wiki at 21:36, 26 August 2025

Ows wiki at 21:36, 26 August 2025

Ows wiki at 21:35, 26 August 2025

Ows wiki at 21:09, 28 May 2025

Ows wiki at 20:58, 28 May 2025

Ows wiki: Created page with " Internet_Clock-XIAO-OLED_Display_1.12
#include #include #include #include #include #include // Repla..."

@@ Line 14: / Line 14: @@
 const char* password = "Wifi_password";
-// Initialize OLED display (128x64 SH1106)
+// Initialize OLED display
-// U8G2_SH1106_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);
+U8G2_SH1107_SEEED_128X128_1_SW_I2C
 // NTP Client Setup
 WiFiUDP ntpUDP;