OLED resolution issue

Projects Programming
1

Good evening,
I'm trying to make a date, time, temperature and humidity display from the project hub but the image is too big for the screen even though I've checked everything. Can someone point me in the right direction to resolve this please.

20221119_122254
20221119_1222541920×2560 200 KB

Blockquote

//Date, Time, Temperature and Humidity Display

/////////////////////////For OLED////////////////////////
#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

// If using software SPI (the default case):
#define OLED_MOSI 9 //MOSI aka SDA
#define OLED_CLK 10 //CLK aka SCL
#define OLED_DC 11
#define OLED_CS 12
#define OLED_RESET 13
Adafruit_SSD1306 display(OLED_MOSI, OLED_CLK, OLED_DC, OLED_RESET, OLED_CS);

#if (SSD1306_LCDHEIGHT != 64)
#error("Height incorrect, please fix Adafruit_SSD1306.h!");
#endif
/////////////////////////////////////////////////////////////

////////////////////////////For DHT//////////////////////////
#include<dht.h>
dht DHT;
#define DHT11_PIN 3
int DHTtimer = 0;
/////////////////////////////////////////////////////////////

////////////////////////////For RTC (DS3231)//////////////////////////
//SDA to A4, SCL to A5

#define DS3231_I2C_ADDRESS 0x68
// Convert normal decimal numbers to binary coded decimal
byte decToBcd(byte val)
{
return( (val/1016) + (val%10) );
}
// Convert binary coded decimal to normal decimal numbers
byte bcdToDec(byte val)
{
return( (val/1610) + (val%16) );
}
/////////////////////////////////////////////////////////////

void setup()
{
Wire.begin();
Serial.begin(9600);

//set the initial time here, after setting the time, comment this section
//DS3231 seconds, minutes, hours, day, date, month, year
//setDS3231time(00,24,12,6,3,2,17);
display.begin(SSD1306_SWITCHCAPVCC);
display.clearDisplay();
}

////////////////////////////DS3231 coding//////////////////////////
void setDS3231time(byte second, byte minute, byte hour, byte dayOfWeek, byte
dayOfMonth, byte month, byte year)
{
// sets time and date data to DS3231
Wire.beginTransmission(DS3231_I2C_ADDRESS);
Wire.write(0); // set next input to start at the seconds register
Wire.write(decToBcd(second)); // set seconds
Wire.write(decToBcd(minute)); // set minutes
Wire.write(decToBcd(hour)); // set hours
Wire.write(decToBcd(dayOfWeek)); // set day of week (1=Sunday, 7=Saturday)
Wire.write(decToBcd(dayOfMonth)); // set date (1 to 31)
Wire.write(decToBcd(month)); // set month
Wire.write(decToBcd(year)); // set year (0 to 99)
Wire.endTransmission();
}
void readDS3231time(byte *second,
byte *minute,
byte *hour,
byte *dayOfWeek,
byte *dayOfMonth,
byte *month,
byte *year)
{
Wire.beginTransmission(DS3231_I2C_ADDRESS);
Wire.write(0); // set DS3231 register pointer to 00h
Wire.endTransmission();
Wire.requestFrom(DS3231_I2C_ADDRESS, 7);
// request seven bytes of data from DS3231 starting from register 00h
*second = bcdToDec(Wire.read() & 0x7f);
*minute = bcdToDec(Wire.read());
*hour = bcdToDec(Wire.read() & 0x3f);
*dayOfWeek = bcdToDec(Wire.read());
*dayOfMonth = bcdToDec(Wire.read());
*month = bcdToDec(Wire.read());
*year = bcdToDec(Wire.read());
}
void displayTime()
{
byte second, minute, hour, dayOfWeek, dayOfMonth, month, year;
// retrieve data from DS3231
readDS3231time(&second, &minute, &hour, &dayOfWeek, &dayOfMonth, &month,
&year);
// send it to the serial monitor
Serial.print(hour, DEC);
// convert the byte variable to a decimal number when displayed
Serial.print(":");
if (minute<10)
{
Serial.print("0");
}
Serial.print(minute, DEC);
Serial.print(":");
if (second<10)
{
Serial.print("0");
}
Serial.print(second, DEC);
Serial.print(" ");
Serial.print(dayOfMonth, DEC);
Serial.print("/");
Serial.print(month, DEC);
Serial.print("/");
Serial.print(year, DEC);
Serial.print(" Day of week: ");

//////////////////////////////////////////////////////////////////

display.setCursor(50,0);
display.print(dayOfMonth, DEC);
display.print(",");

display.setCursor(91,0);
display.print("20");
display.print(year, DEC);

if (hour<10)
{
display.setCursor(40,10);
display.print("0");
display.print(hour, DEC);
display.print(":");
}
if (hour>9)
{
display.setCursor(40,10);
display.print(hour, DEC);
display.print(":");
}

if (minute<10)
{
display.setCursor(58,10);
display.print("0");
display.print(minute, DEC);
display.print(":");
}

if (minute>9)
{
display.setCursor(58,10);
display.print(minute, DEC);
display.print(":");
}

if (second<10)
{
display.setCursor(75,10);
display.print("0");
display.print(second, DEC);
}

if (second>9)
{
display.setCursor(75,10);
display.print(second, DEC);
}

//////////////////////////////////////////////////////////////////
//////////////////////////////FOR DAY OF WEEK/////////////////////
switch(dayOfWeek){
case 1:
Serial.println("Sunday");

display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(20,0);
display.print("Sun");

break;

case 2:
Serial.println("Monday");

display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(20,0);
display.print("Mon");

break;

case 3:
Serial.println("Tuesday");

display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(20,0);
display.print("Tue");

break;

case 4:
Serial.println("Wednesday");

display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(20,0);
display.print("Wed");

break;

case 5:
Serial.println("Thursday");

display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(20,0);
display.print("Thur");

break;

case 6:
Serial.println("Friday");

display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(20,0);
display.print("Fri");

break;

case 7:
Serial.println("Saturday");

display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(20,0);
display.print("Sat");

break;

}

//////////////////////////////FOR MONTH/////////////////////
switch(month)
{
case 1:
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(70,0);
display.print("Jan");

break;

case 2:
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(70,0);
display.print("Feb");

break;

case 3:
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(70,0);
display.print("Mar");

break;

case 4:
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(70,0);
display.print("Apr");

break;

case 5:
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(70,0);
display.print("May");

break;

case 6:
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(70,0);
display.print("Jun");

break;

case 7:
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(70,0);
display.print("Jul");

break;

case 8:
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(70,0);
display.print("Aug");

break;

case 9:
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(70,0);
display.print("Sep");

break;

case 10:
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(70,0);
display.print("Oct");

break;

case 11:
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(70,0);
display.print("Nov");

break;

case 12:
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(70,0);
display.print("Dec");

break;

}

/////////////HOUR HAND///////////////
float x1, y1, a, b;
const float pi = 3.14;
a=((hour-15)30);
b = (api)/180;

x1=40+(9cos(b));
y1=41+(9sin(b));

display.drawLine(40,41, x1, y1, WHITE);

/////////////MINUTE HAND///////////////
// float x1, y1, a, b;
// const float pi = 3.14;
a=((minute-15)6);
b = (api)/180;

x1=40+(17cos(b));
y1=41+(17sin(b));

display.drawLine(40,41, x1, y1, WHITE);

/////////////SECOND HAND///////////////
//float x1, y1, a, b;
a=((second-15)6);
b = (api)/180;

x1=40+(19cos(b));
y1=41+(19sin(b));

display.drawLine(40,41, x1, y1, WHITE);

////////////////PARTS OF THE ANALOG CLOCK THAT WILL NOT BE MOVING////////////////
display.drawCircle(40, 41, 22, WHITE);
display.drawCircle(40, 41, 1, WHITE);

display.drawLine(40, 20, 40, 25, WHITE); //12
display.drawLine(40, 63, 40, 58, WHITE); //6
display.drawLine(62, 41, 57, 41, WHITE); //3
display.drawLine(19, 41, 24, 41, WHITE); //9
display.drawLine(50, 24, 47, 28, WHITE); //1
display.drawLine(57, 31, 53, 34, WHITE); //2
display.drawLine(60, 51, 54, 48, WHITE); //4
display.drawLine(51, 58, 48, 54, WHITE); //5
display.drawLine(29, 58, 32, 54, WHITE); //7
display.drawLine(21, 51, 25, 48, WHITE); //8

display.drawLine(22, 31, 27, 33, WHITE); //10
display.drawLine(30, 23, 32, 28, WHITE); //11

}

void ReadTempAndHum ()
{
int chk = DHT.read11(DHT11_PIN);

display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(70,45);
display.print("Temp: ");
display.print(DHT.temperature, 0);
display.print("C");

display.setCursor(70,56);
display.print("Hum: ");
display.print(DHT.humidity, 0);
display.print("%");

Serial.print(" Humidity: " );
Serial.print(DHT.humidity, 1);
Serial.print("%");
Serial.print(" | Temperature: ");
Serial.print(DHT.temperature, 1);
Serial.println("C");
}

void loop() {

displayTime(); // display the real-time clock data on the Serial Monitor,

DHTtimer = DHTtimer + 1;

//To ensure that the DHT is read only every 2 seconds, we make a count that goes for 2 seconds
if (DHTtimer > 1)
{
display.fillRect(70, 45, 128, 64, BLACK);
ReadTempAndHum ();
DHTtimer = 0;
}
delay(1000);

display.display();
//The portion of the screen that shows the time and date are cleared
display.fillRect(0, 0, 64, 64, BLACK);
display.fillRect(0, 0, 128, 20, BLACK);
}

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2

The Adafruit_SSD1306 library is assuming a 128x32 display. You can either change the setting in the Adafruit_SSD1306.h file (not recommended), or use the newer version of the constructor where the width and height in pixels is specified in the constructor:

(this code is taken from the Adafruit_SSD1306 example)


#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels

// Declaration for SSD1306 display connected using software SPI (default case):
#define OLED_MOSI   9
#define OLED_CLK   10
#define OLED_DC    11
#define OLED_CS    12
#define OLED_RESET 13
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT,
  OLED_MOSI, OLED_CLK, OLED_DC, OLED_RESET, OLED_CS);
3

Next time you post, use code tags, not blockquote.

4

Thanks david_2018. All working now.