Hi Richard:

> In addition to this, if you have an oscilloscope available to you, you can measure this with the scope and see if this is what's happening.

Unfortunately I don't have access to an oscilloscope though I have been seriously considering buying the little one on seeedstudio.com <http://www.seeedstudio.com/depot/digital-storage-oscilloscope-diy-kit-with-panels-p-166.html>. If you or anyone else has an opinion of that device I would be interested to hear it.