U8glib and SSD1306 I2C

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so here's problem

i have v2.1 adafruit 128x64 ssd1306 oled , can not life of me work u8glib library.
i'm using arduino uno r2, arduino ide 1.5.6 r2, , u8glib 1.16pre-release.  trying use i2c setup, have sda pin set a4 , scl pin set a5.  5v  , gnd in right place well.  know wiring right , display functional because can run display adafruit library.   i have tried every u8glib constructor involving ssd1306 , i2c, still darkness.  have adafruit 128x32 i2c oled, hooked up, same 128x64, change constructor , works instantly.  don't understand why can't work. 

any appreciated!! :)

can provide exact constructor calls? maybe repeat test arduino ide 1.0.5.

oliver


Arduino Forum > Using Arduino > Displays > U8glib and SSD1306 I2C


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