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I got an oscilloscope today. It was $126. Almost new! Regular price was like $710. 50 mHz 2 channels. I also ordered an STK500 atmel microcontroller programmer and 2 ATMega8 chips. So the code on the computer can finally be sent to that little $1.50 ATMega8 chip that will be responsible for putting out the pulse width modulation from the throttle, monitoring battery level, monitoring temperatures of whatever I want, etc.
My first draft will be an upgraded controller for my bike. Then I'll be looking at maybe 300 or 400amp 144v controller for the car. I found a cheaper source for some big IXFX 120N20 mosfets. They will only be $13.15 each. I'll need like 6 or 10 of them for the car controller. The whole cost will be maybe $300 or so, but first will be the bike controller. I know this sounds sort of ambitious, but I know I can do it. A brushed DC motor controller is actually very simple. The devil is in the details, though. If I have the money, I might be able to finish it by the end of the summer? Well, things are always much harder than you think they will be. I'll be sure to show updates about the progress.
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