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I finally figured out how to use the STK500 as an in system programmer (ISP). So, I can add a 6 pin plug on the outside of the controller so that the microcontroller can be reprogrammed while leaving it "in system" (hence ISP). So, you can even make it possible for other people to program their own controller with the features that they want, like ramp up time, current limit, etc... Like if you know you are going to drag race for just a little while, you could set the current limit really high, or if you want to go for long range, you could set the rampup to be long, and the current limit to be low.
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