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afterdigital:
The board which is listed on this site is a little over kill for what you want, however you could strip it down and make it do what you want. The best solution for you would be to make a different version of board and simply add in PC turn on (off), inverter turn on and off section (relay). The board design could be very small with just a few components. Downside is that you will have a locked startup time and shutdown time, which means that you can't change it. As you already know, you need to have a delay time for when you crank your car on and you need to have shutdown delay to allow your PC to turn off, before power to the inverter is cut. Code for this is easy and could be written right away. I could design such a unit if a few people are interested. I could list the code and drawings in a few days. However, I would need to know the delay times which I have listed above for everyone to use, which makes it a little harder, since every PC boots faster and slower then others.
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