Thanks for the effort Brendan. I'm planning on this being an I2C weekend (sob, I have neither friends nor life so what else have I got to do ?) and will be keen to see the module in action. I suspect that the various timing and sequence diagrams in the manuals will be valuable too -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.