Need help with making a sound alarm on arduino grove kit

Projects General Guidance
1

Hello, I am new here. I am trying to make a background sound alarm that shows the time on the oled display and makes noise when it is a certain time. I am on the first part which is getting the oled display to show time but i do not know how since our teacher never taught us how to use the oled display. I tried searching for videos on how one writes a program that will project time on the display but none of them are for arduino grove specifically and require extra parts not given with the grove kit so i can't use them. How do i write code that will display time?

2

There are probably tens of thousands of examples. The way the forum works is you do your best, and when you get stuck, we can help. We expect a wiring diagram (photo of hand drawn is fine) and all code in code tags after being auto formatted. I find the best approach is to look at the code examples for a library that sounds like it gives me what I want. Search the library manager for oled. I got 32 pages of matches.

Screenshot 2025-04-11 at 11.43.27
Screenshot 2025-04-11 at 11.43.27650×1300 66.3 KB

3

I happened to have a sketch for Grove beginner kit. You need to install the library "U8g2" by Oliver.

/*

Test sketch for Grove 0.96" OLED screen.

*/

#include <Arduino.h>
#include <U8g2lib.h>

#ifdef U8X8_HAVE_HW_SPI
#include <SPI.h>
#endif
#ifdef U8X8_HAVE_HW_I2C
#include <Wire.h>
#endif


U8G2_SSD1306_128X64_NONAME_F_HW_I2C oled(U8G2_R2, /* clock=*/ SCL, /* data=*/ SDA, /* reset=*/ U8X8_PIN_NONE);  // High speed I2C
// U8G2_SSD1306_128X64_NONAME_F_SW_I2C u8g2(U8G2_R0, /* clock=*/ SCL, /* data=*/ SDA, /* reset=*/ U8X8_PIN_NONE);    //Low speed I2C

unsigned fontHeight;

void setup(void) 
{
  oled.begin();
  
}

unsigned line_pos (byte lineNum)
{
  return (lineNum+1) * fontHeight - 4;
}

void loop(void) 
{
  oled.clearBuffer();                   // clear the internal memory
  // choose a suitable font for 4 lines

  //oled.setFont(u8g2_font_helvR12_tr);  // proportional spaced  
  oled.setFont(u8g2_font_crox2c_mr);     // monospace, 24 chars per line
  fontHeight = 16;
  
  oled.drawStr(0,line_pos(0),"Hello World!");    // write something to the internal memory
  oled.drawStr(0,line_pos(1),"[ My line 2");
  oled.drawStr(0,line_pos(2),"[_My line 3");
  oled.drawStr(0,line_pos(3),"12345678901234567890");

  oled.sendBuffer();                    // transfer internal memory to the display

  delay(1000);  
}