I have purchased the IIC 128x64 OLED Module by ELECFreaks. However, I am confounded by the documentation. There is actually no documentation on RobotShop, but at ELECFreaks, there was a great deal of documentation, much of it highly technical and devoted to things like the precise timing of the serial signal. But, I really cannot make heads or tails of it. There is a sample Arduino program, but it is not really documented well enough to understand what is going on.
On their forum, there is a person in a similar situation as myself. They posted over a year ago, but with no reply. My own query has been stuck in moderation for a day, so I am starting to feel there is not going to be any support from them. [Edit: My message has now been approved by the moderator. I suspect the big Maker Fair had them away. Though, they have not posted any more info themselves]
Ideally, I would find a blog that went into using the product, or even a tutorial. But, I have not found any yet. I am willing to put more time into their manuals, if someone can recommend a particular portion where I should focus my attention.
-Joe