Hint to make this work
The part shipped has an address on the back of 0x78 with an option of 0x7A. The recommended Adafruit libraries have 0x3D as a default. I spent quite a few hours trying to make the system work with these without luck. After much experimentation and sheer bumbling about, I found that the I2C address of 0x3C will work, at least with the one that I have. Without an oscilloscope, I would have never found the address. This piece of info was listed nowhere!!!
Since it's now working, it's a nice little monochrome display that seems to work well with the Adafruit libraries. Just make sure change the default address, not to what is on the back of the display, but to 0x3C. Hopefully yours will work with this address as well.
-kbellco
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