Hello Gang, On the model rocket subject; I beleive Circuit Cellar Ink (magazine) just recently had an article on a Pic based model rocket datalogger (and the use of conductive paint) which was interesting :) I am looking for ideas, information, products, sensors, techniques, etc. on testing for fuel oil leaks from above and below ground tanks (diesel). Thank You, Bob Carter, design engineer Wildlife Materials, Inc. 1031 Autumn Ridge Road Carbondale, IL 62901, USA voice (618) 549-6330 (ext. 225) fax (618) 457-3340 email wolftech@midwest.net www www.wildlifematerials.com