> Thermal pile ? There's an idea! Perhaps you can find some "loose" radioactive strontium or whatever in one of those toy countries on the edge of civilized Europe. ******************************************************************** Olin Lathrop, embedded systems consultant in Littleton Massachusetts (978) 742-9014, olin@embedinc.com, http://www.embedinc.com -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu