This is a library for the SH1106 based 128x64 pixel OLED display running on the Arduino Attiny platform. There is no screen buffer so it is small enough to be used with the RAM of the Attiny85.

You can either download this library as a zip file and unpack it to your Arduino/libraries folder or (once it has been added) choose it from the Arduino library manager.

The Spirit level example shows how to use the graphics capability of the library. It makes use of the TinyWireM library.

An 8 x 8 bitmap (or font) can be drawn at any valid location within the display area. Note that if the bitmap does not fall on a vertical 8-bit boundary then two 8-bit writes are made. This may overwrite already written locations. When writing strings to the display there will be corruption if lines are too close.