New in version 1.2:
Lots of code clean-up thanks to Adruino Forum members. Rebuilt the ping timing code from scratch, ditched the pulseIn code as it doesn't give correct results (at least with ping sensors). The NewPing library is now VERY accurate and the code was simplified as a bonus. Smaller and faster code as well. Fixed some issues with very close ping results when converting to inches. All functions now return 0 only when there's no ping echo (out of range) and a positive value for a successful ping. This can effectively be used to detect if something is out of range or in-range and at what distance. Now compatible with Arduino 0023.
By default, it uses micros() to do the ping echo timing. But, I also included alternate code that uses loop counting (similar to what pulseIn uses). It's streamlined, but follows the same basic concept as pulseIn.
Let me know what you think, and if you have any issues or suggestions.
Tim