Regarding switch debounce: no problems, but more because although I just tested input "for fun" as it were, it's actually LCD display driving that I'm using the library for, so it's all outgoing. Your quite right - it was irresponsible of my to say "feel along"... use a plastic needle/plastic tweezer/plectrum ... anything non-conductive! As for burn avoidance... have a bowl of ice cubes handy?! (Kids, this is not qualified medical advice - you'll probably do more harm than good. Your fingers are at risk if you take advice from me. Always consult a physician.) =========================================================== The raspberry-vi mailing list Archives: //www.freelists.org/archives/raspberry-vi Administrative contact: <mike.ray@xxxxxxxxxxxxxx> ----------------------------------------------------------- Raspberry Pi and the Raspberry Pi logo are trademarks of the Raspberry Pi Foundation. This list is not affiliated to the Raspberry Pi Foundation and the views and attitudes expressed by the subscribers to this list do not reflect those of the Foundation. Mike Ray, list creator, January 2013