Hi Mike, Friday, February 2, 2007, 4:34:57 PM, you wrote: ML> Just Google "555 timer circuit" and start looking through the 437,000 ML> hits. Or you can download a program here to design it for you : http://www.schematica.com/555_Timer_design/555_Timer_PRO.htm -- Best regards, Richard in the UK _______________________________________________ ATM mailing list http://www.atmlist.net/