Heltec Oled (128x64, 1.3'') doesn't work

Hi, i just bought this cheeap Oled display in my local electronics store two days ago.


(no scratch, just annoying dust)

I only now that is a Heltec 128x64, 1.3'' Oled display, it was on exhibition so i have no box or documentacion about it (yeah, buying this wasn't a brilliant idea) and i can't make it work or even turn on.

I first try with the Adafruit libraries: Adafruit_SSD1306 and Adafruit-GFX. But now i'm pretty sure that this doesn't work for my display

Then i try with the U8glib library using the inside "Hello world" example and this constructors

U8GLIB_SSD1306_128X64 u8g(13, 11, 10, 9);	// SW SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
U8GLIB_SSD1306_128X64 u8g(4, 5, 6, 7);	// SW SPI Com: SCK = 4, MOSI = 5, CS = 6, A0 = 7 (new white HalTec OLED)
U8GLIB_SSD1306_128X64 u8g(10, 9);		// HW SPI Com: CS = 10, A0 = 9 (Hardware Pins are  SCK = 13 and MOSI = 11)
U8GLIB_SH1106_128X64 u8g(13, 11, 10, 9);	// SW SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
U8GLIB_SH1106_128X64 u8g(4, 5, 6, 7);	// SW SPI Com: SCK = 4, MOSI = 5, CS = 6, A0 = 7 (new blue HalTec OLED)

One at a time obviously and following the wiring of each constructor (Vcc -> 5v, GND -> GND), i try with some other constructors but i don't remember which one, i change the pins, the voltage supply to 3.3v and the display doesn't even gives signs of life.
i'm using an generic arduino UNO by the way.

I'm running out of ideas, do you know what's going on?, should i use some other libraries?, some people suggest the use of pull-up resistors, these are necessary for the SPI bus? i´m kinda new in all this business.

Thanks for the advice.

The driver chip is 3.3V and some do not work if driven by 5V signals. You could try adding series resistors (say 2K2) in the control line feeds but I think you will need to drive from a 3.3V Arduino or to use a level converter.