lancsdude:
My SSD1306 128x64 is running I2C, works fine, then locks up after 20 seconds, the screen does not refresh until I power off.
So I was looking at this thread for help, assuming I am having a RAM issue? but I have 2K (Nano 328P)
and my sketch upload sjows 52% of programme memory and 14% dynamic memory.. ?
Should I change to U8g2lib ?
Some threads say not to use the 5v from the Nano and to power the OLED sperately?
And I remember you asking someone if they were using pull up resistors (on I2C)?What are my first steps would you say?
Maybe look in the other parts of your code for the root cause of this behavior. I do not think that there is an hardware issue or a problem with u8glib. Also consider to create a new thread for this.
Oliver