I've created a data logger that records temperature to an SD card with the Adafruit data shield. Now, I'd like to be able to print that data as a graph to the mini thermal receipt printer that I got from Adafruit as well. Didn't realize it would be as difficult as it is. I figure the next step would be to create a bitmap on the SD card as I'm recording the data points, then just send it to the printer. Does that seem right?
I've searched for every combination of keywords that make sense, but haven't found much useful info. Any help or a direction to look is appreciated.