I'm not sure if this is the right place to post this, but here goes.
I already have the ping))) ultrasonic range finder, but i was in my local electronics shop today and saw these boards labeled "Ultrasonic Rangefider" for $2, so i picked one up just to try it out. Anyway, I cant find any documentation on it anywhere and was just curious if anybody has come across them or might know anything about them. There appears to be both a single ultrasonic sensor, as well as two IR senors. There are 4 pins, 5v, gnd, and I.R. and U.S. Just for fun i hooked it up to my arduino and used the old 3 pin Ping sketch from the examples, but to no surprise it didnt work.
The only thing written on is Virtual Ink Corp., OPCOP6 94V-O, 500-0031 REV ____. That's it. Google came up with nothing.