gandalf50:
Sounds good, I'll try some more with other pin configs.I didn't provide the code since I have this problem with e.g. your example code with the sonar array and 3 sensors. I.e. your code with "This example code was used to successfully communicate with 15 ultrasonic sensors". Let me know if you still want the code (only updated the SONAR_NUM and objects in the sonar array).
Do you know if someone got multiple sensor working together with an Ethernet shield on the Mega 2560?
Brg,
/Magnus
The code is always helpful, even if it's basically the same as the sample. I've seen several times that a little change was made and that was causing the problem.
Tim