This is a library for our Monochrome OLEDs based on SSD1305 drivers Pick one up today in the adafruit shop! * https://www.adafruit.com/products/2675 These displays use I2C or SPI to communicate Adafruit invests time and resources providing this open source code, please support Adafruit and open-source hardware by purchasing products from Adafruit! Written by Limor Fried/Ladyada for Adafruit Industries. BSD license, check license.txt for more information All text above must be included in any redistribution To download. click the DOWNLOADS button in the top right corner, rename the uncompressed folder Adafruit_SSD1305. Check that the Adafruit_SSD1305 folder contains Adafruit_SSD1305.cpp and Adafruit_SSD1305.h Place the Adafruit_SSD1305 library folder your <arduinosketchfolder>/libraries/ folder. You may need to create the libraries subfolder if its your first library. Restart the IDE. You will also have to download the Adafruit GFX Graphics core which does all the circles, text, rectangles, etc. You can get it from https://github.com/adafruit/Adafruit-GFX-Library and download/install that library as well