Good day to all. I've just been handed a project where the customer needs to have a=20 spark suitable for igniting combustible gases. This is an outdoor=20 application and he wants a spark every few seconds. The unit needs=20 to run from a 12V battery that is charged with a solar panel - no=20 outside power is available. The obvious solution is to have a simple timer that drives an=20 ordinary automobile ignition coil from a 12V battery. I used to do=20 stuff like this several decades ago. But I always got better results when I used a Capacitive Discharge=20 setup, where a small (1uf) capacitor was charged to a fairly high=20 voltage, then dumped into the ignition coil's primary. Fast forward a couple of decades - cheap Chinese-made CDI modules=20 seem to be everywhere. But I'll be darned if I can find one right now. What I'm looking for is an off-the-shelf CDI module that doesn't=20 consume a lot of power while its quiescent and that I can trigger=20 with a 555 timer (or a PIC !!) every few seconds. Does anyone have any idea where I can purchase something like this=20 fairly inexpensively? FWIW - I'm currently looking at a "2 STROKE RACE CDI IGNITION JOG=20 Minarelli 1PE40QMB" module on eBay right now. Its cheap at $8.99 but=20 I'm pretty sure that its intended for magneto ignition rather than a=20 12V battery supply. But something like that is what I'm looking for. Suggestions greatly appreciated. Many thanks! dwayne --=20 Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax www.trinity-electronics.com Custom Electronics Design and Manufacturing --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .