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Old 04-20-2011, 03:46 AM   #4651 (permalink)
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Yes, Espoo. I have a good friend who works there. Apparently gets a bit cold in winter.

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Old 04-20-2011, 03:55 AM   #4652 (permalink)
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I guess Espoo also got a lot of snow this winter. They had lots of problems with excess snow in Helsinki, which is very close to Espoo. It was something like -35C at worst and it lasted weeks. Southern Finland stays few degrees warmer. While diesel engines had problems with frozen pumps (and diesel itself, hehe), my EV did work okay, hehe. And so did controller. I was able to get heatsink temperature barely above 0C when pulling 200-300A from batteries.
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Old 04-20-2011, 04:51 AM   #4653 (permalink)
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Quote:
Originally Posted by mora View Post
I was able to get heatsink temperature barely above 0C when pulling 200-300A from batteries.
Ha ha 'cool'
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Old 04-22-2011, 03:01 AM   #4654 (permalink)
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Great looking Beast in your Pics. It makes the control board look tiny.
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Old 04-22-2011, 11:18 AM   #4655 (permalink)
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Hello
Thanks for the help. Now LED is fast flashing. I use this calculator.
Engbedded AVR Fuse Calculator

The picture for the ponyprog program is attach.

And now I hawe another problem. On the RTD explorer show me the alarm V-ref-fault.
I try to conect the pin 11 on the atmega8 on the + and -5V and the alarm is the same. What can I do.
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Old 04-22-2011, 12:22 PM   #4656 (permalink)
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The micro expects a 2.5v v ref signal if no current is flowing. You can simulate this with two 1k resistors across the 5v line with the center tap going to the vref input.

In other news I have made a start on the controller for the bike. I'm calling it the revoliton jr I'm using 2 of the powerex cm400du 400A 600V parts. I'm videoing this build and the liquid cooled revoliton 0.9 monster. So far i have over 90 minutes of video. I expect over 3 hours when done. I plan to upload the highlights to youtube and if anyone wants a dvd just ask. That way you can inflict the pain of listening to me drone on for 3 hours on your friends
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Now, Cole, when you shift the gear and that little needle on the ammeter goes into the red and reads 2000 Amps, that's bad.
www.evbmw.com
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Old 04-22-2011, 02:20 PM   #4657 (permalink)
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It's looking more and more refined. Beautiful!

I'm doing the wiring in the car and then I plan on testing the 3 1000amp controllers in the car this weekend. It's actually sunny today. The last 6 months or so it has rained every day.
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Old 04-23-2011, 01:16 AM   #4658 (permalink)
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My creation is alive
Thanks all for the help
The basic it works, now I must put together the curent measurment and the power stage.

But the first the one week holidays on the sea.

Happy easter
bye
stay good
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Old 04-24-2011, 10:30 AM   #4659 (permalink)
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Saga continues ........
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Now, Cole, when you shift the gear and that little needle on the ammeter goes into the red and reads 2000 Amps, that's bad.
www.evbmw.com
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Old 04-24-2011, 10:43 AM   #4660 (permalink)
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I think I figured out why copper is so expensive. Jack bought all of it! haha. That's looking friggen awesome!

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