HI there
I am trying to make the display scroll but was unable to do so.
I tried @ANDREAS SPIESS tinyOzOLED library which i can see has a scrron right and diagonal function.
If you could please help with a simple example code would be helpful.
Thank you

Hi again,
As comment before, for scaling 4x the fonts i made this:
Add this to TinyOzOLED.h:
void printCharX4(char c, byte X=255, byte Y=255);
void printStringX4(const char *String, byte X=255, byte Y=255, byte numChar=255);

And this to TinyOzOLED.cpp:

void OzOLED::printStringX4(const char *String, byte X, byte Y, byte numChar){
byte count=0;
while(String[count] && count<numChar){
printCharX4(String[count++],(X+count),Y);
}
}
void OzOLED::printCharX4(char C, byte X, byte Y){
byte o,c,dy,i;
//Ignore unused ASCII characters. Modified the range to support multilingual characters.
if(C 127) C=’*’; //star – indicate characters that can’t be displayed
for (dy=0;dy<4;dy++) //real Y size
{
for(i=0;i<8;i++) //bytes of font
{
c=pgm_read_byte(&BasicFont[C-32][i]);
o=0;
if ((i % 2)==0) setCursorXY((X<>1),(Y<<2)+dy); //set cursor only even numbers
if ((c&(2<<(dy<<2)))!=0) o+=128+64+16+32;; //bit is on?
if ((c&(1<<(dy<<2)))!=0) o+=8+4+2+1; //bit is on?
sendData(o); //send 4 times
sendData(o);
sendData(o);
sendData(o);
}
}
}

The link to the library zip is dead, can you please update it ? Thank you !

Neat little library! Well done!
But, I’ve noticed that some decimal numbers are printed wrong when using printNumber(). First of all the numbers are truncated and not rounded but the real problem is with numbers beginning with zero after decimal point, for example:

OzOled.printNumber( (float) -0.00199, 3, 0, 0) prints -0.1 !

Hi Oscar
#include
#include

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

}

void loop(){
int a = analogRead(A0);
Serial.print(a);
OzOled.init(); //initialze SEEED OLED display

OzOled.printString( 0, 15, a); //Print the String.

}
Uploads a code or three $ 5 * oled that output. Help me!.

Hi Oscar
Great library, thanks for sharing.
I like it is non-buffered and just update the characters in question.
For your information, I made a few changes in my copy .
Easy to modify to use text on SH1100 controlled oleds.
I added a few functions in order to flip the display vertically as well as adding (a usable) font for the range 128 to 255, iso8855-1 like, and only made changes in printChar() to accomodate for unsigned char output. It adds about 1K to the code size.

Carl

Hi Oscar
Great library – I can seen how to print text in quotes, but is there any way to print a String variable? Can’t see any examples.

Hi hello,
thanks for great work about OLED.
I`ve some question:
1. how should I do, if I want the display is big alphabet or number?
2. I have RTC, but I don`t know how to display in OLED, her is the RTC example:
———————————————————————————————————————————————————–
#include
#include

RTC rtc(DST_ON);

void setup()
{
Serial.begin(9600);
while(!Serial);
delay(1000);
}

void loop()
{
Data d = rtc.getData();

// GET DATE:
Serial.print(d.year); Serial.print(“/”);
Serial.print(d.month); Serial.print(“/”);
Serial.print(d.day); Serial.print(” “);

// GET TIME:
Serial.print(d.hour24h); Serial.print(“:”);
Serial.print(d.minutes); Serial.print(“:”);
Serial.println(d.seconds);

delay(1000);
}

Clemzo,

Mail me buddy, I am more than happy to give you a copy of the modified Lib.

I am still tweaking it adding more, I want to tweak the text print routine so uses standard print format to enable storage in progmem and not ram.

:)

[email protected]

Happy coding :)

Hi..great tutorial….Do you have any idea how to add charge pump to use your library with SSD1306 oled display

just received my package. find your library very helpful! (Adafruit’s not fits my memory) and have some brightness problem on both pieces.. at maximum .setBrightness(254) it lit very very dim… any ideas where might be the problem? using 10K pull-up resistor. pic@dropbox: https://www.dropbox.com/s/dnvfxrixaizd7xp/Photo%2023-01-15%2018%2033%2031.jpg?dl=0

Hey, what do you type into the void loop and the “ozoled.init(?);”?
I’m stuck dude.

Hello Oscar! I have this problem: After power off and restart Arduino text, the display shows the “top down”!!! I don’t know – why is it? Following the reboot, nothing. All remains to the top of your feet! And yet – I can’t increase the font size, and transfer from one line to the next! ( if the text does not fit on one line, it is not transferred to the second…) Help me Please! Here is my sketch: #include
#include
#include “DHT.h”

#define DHTPIN 7 // what pin we’re connected to

#define DHTTYPE DHT11 // DHT 11
DHT dht(DHTPIN, DHTTYPE);

void setup(){

OzOled.init(); //initialze OLED display

OzOled.clearDisplay(); //clear the screen and set start position to top left corner
OzOled.setNormalDisplay(); //Set display to Normal mode
OzOled.setPageMode(); //Set addressing mode to Horizontal Mode
{

OzOled.printString(“DHTxx test!”);

dht.begin();
}

}

void loop(){
{
// Reading temperature or humidity takes about 250 milliseconds!
// Sensor readings may also be up to 2 seconds ‘old’ (its a very slow sensor)
float h = dht.readHumidity();
float t = dht.readTemperature();

// check if returns are valid, if they are NaN (not a number) then something went wrong!
if (isnan(t) || isnan(h)) {
OzOled.printString(“Failed to read from DHT”);
delay(1000);
} else {
OzOled.printString(” Humidity: “);
OzOled.printNumber(h);
OzOled.printString(“% “);
delay(4000);

OzOled.clearDisplay();
OzOled.printString(” TEMP: “);
OzOled.printNumber(t);
OzOled.printString(“* C”);
delay(4000);

OzOled.clearDisplay();

}
}
}
It would be desirable that the temperature and humidity are displayed on the center screen and large font. And, of course, was not turned over “to the top of the legs when turning the power off and reboot. THANK you very much!

So, i’m was working in my own library using you oZoLed library. I was Implemented the full ASCII table, and others things, like BMP arrays. I’m looking the adafruit and u8glib library, and they can control a independent pixel in the display, example:

DrawPixel(0,0); //this is a example

i tried use this code in my library:

sendData(0x01);

they draw a single pixel, but when i change to de next line, they cue some pixels off and then turn on a pixel, away from the other pixel line..

Can you help me to fix this?

SORRY FOR MY ENGLISH, I’M BRAZILIAN AND I’M LEARNING HOW TO SPEAK ENGLISH haha :D
thanks!

You might want to look at the u8glib library. I’ve been using that to controller the same OLED display and it works great.

It works with both Arduino (I’ve had it working on Arduino Uno) and AVR (on my atmega328p).

Got the Oled today
Downloaded the lib
loaded the demo …..AND…..
Works like a charm!!!!!

I should be very greatful to take a look at your library, i sitting to create my own for SSD1306 and looks like they working a lot the same.

Send me a e-mail if you whant to share the code, i am looking forward to see your e-mail ;-)