Here is the chip.... as I find these kind of details matter and are often omitted on these kinds of Internet tutorials and discussions. I will replace this photo (taken quickly with my iPhone) with a screen shot from my computer when I find the USB cable to my little microscope.
In fact, the way I got this test to work (finding a starting point sketch) was to use my microscope to read the model number on the chip: the
CC2541
A number of times recently, I received some modules with the model number of the chip "burned off" with a laser, which is really annoying.
Update: Here is the same chip shot using the USB interface to my Mac Pro :
Both "chip shots" were taken though the plastic wrapper around the BLE module... that is why the image is a bit blurry)