Thanks for all the replies guys. I think at this stage, simply to keep the project moving along, I'll go with the Vinculum IC. Seeing as it's being sampled it would be silly not to. I've made a note of all the bit-banged solutions posted and would like to have a go in the future, maybe with a Scenix or 30F -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist