I expected it to put out 5V on the Vcc pin when RAW and GND are connected to an external power supply (thei is example is a 9V battery, but I’ve tried others, same result).
I checked it with my meter, and it puts out ~3.3V (3.28/9). I was sure they sent me the wrong version, but then I checked when connected to an FTDI board, with RAW and GND not connected, and it puts out 5V on Vcc.
Google revealed this: http://www.tinyosshop.com/index.php?route=product/product&product_id=275 – an adjustable. I looked at my board, and there is something labeled “SW4” to the right of the pins for FTDI connection (if the board is oriented face up with the FTDI pins on the left).
I have tried to slide the switch in either direction, and it will not move. I do not want to put more force on it in fear of breaking something (not a huge financial loss, but I don’t have another–more on order, but it takes 3-4 weeks).
Should I force it? Is there another approach? Is this really adjustable or is it an anomaly?