What steps will reproduce the problem? 1. Using teensy++2.0 and 1.5" ssd1351 from adafruit. 2. Wired up like this The numbers in parens are arduino pin numbers. B0 (20) -> OC (OLEDCS) B1 (21) -> CL ...

Arduino based Spectrum Analyzer with an .96" OLED display (SSD1306). Button used to switch between different bar sizes 12, 8, and 6.

T. K. brings us a brilliant open-source light meter with OLED display. This Arduino project may not illuminate the way, but can tell you how bright it is!