wtf! I'm a blogging virgin, but I've been working on a simple diy cdi ignition system for about 2 years now. I chose an arduino as controller and an sg3525 as the core of the 12v - 250v dc-dc converter. I now have working system and here is where I want to share it with the world. The full description, circuit diagram, parts list and arduino code will be posted soon. I have borrowed liberally from all those generous enough to publish schematics etc. on the web. I am no electronics guru, my interests are cars and motorbikes, but I couldn't find what I needed elsewhere, so I made my own!