Thanks for the input, Tim. I tried the Simple Sketch mentioned in your last post with the same results- "Ping: 0cm". I double-checked my connections against the diagram using pins 11 and 12 for echo and trigger. Also, I have swapped jumper wires to no avail. Any other suggestions?
Also, no reason to open a new thread with an ultrasonic sensor question, you can just ask on the NewPing thread if you're trying to get your sensor to work with NewPing.
I feel kinda awkward hijacking a thread with my own personal problem. Time and again, I see moderators telling people to start a new thread.