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Old 03-14-2010, 12:09 AM   #3171 (permalink)
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Hi Ludiagsm! The chip won't be of much use without the control board, unless you make a board that's very similar to the schematic. Gosh, I don't know what shipping over there would be. It might be cheaper for you to put together a basic programmer, and then buy one (really cheap) and program it. It's either a atmega168 or atmega8. Either one works fine.

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Old 03-14-2010, 12:38 AM   #3172 (permalink)
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Paul, have you considered getting 16 oz dead soft copper flashing and gluing it on each side of a piece of bare fiberglass or carbon fiber? Since you can mill the open spaces, the thickness of the copper is pretty arbitrary. I would try to find a bookbinding press, sandwich the copper-plastic-copper with good slow setting epoxy on each side of the plastic and put that between a couple of pieces of plywood, to keep the excess glue off the borrowed press.
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Old 03-14-2010, 12:40 AM   #3173 (permalink)
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Originally Posted by MPaulHolmes View Post
Hi Ludiagsm! The chip won't be of much use without the control board, unless you make a board that's very similar to the schematic. Gosh, I don't know what shipping over there would be. It might be cheaper for you to put together a basic programmer, and then buy one (really cheap) and program it. It's either a atmega168 or atmega8. Either one works fine.
Paul

I don't have any experience with pic programmers but i want to learn i have bought this before months ago is it good for atmega168 or atmega8
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Old 03-14-2010, 12:48 AM   #3174 (permalink)
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No, that's for pics or dsPICs. To program the atmega8 or atmega168 or 100 others (from Atmel) you should ask Jack Bauer on here. He made one. I've never made one myself, but I guess it's pretty easy and CHEAP! Then I could email you the .hex file, and you just transfer it to the chip, and then drive away! hurray!

I'm making good progress on the 1000amp controller, and that's using a dsPIC30F4011 40 pin chip, which you WILL be able to program with the programmer that you have, Ludiagsm! ya!

Hey, I was looking at your other pictures. You are popular with the ladies!!!
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Old 03-14-2010, 12:59 AM   #3175 (permalink)
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Originally Posted by MPaulHolmes View Post
No, that's for pics or dsPICs. To program the atmega8 or atmega168 or 100 others (from Atmel) you should ask Jack Bauer on here. He made one. I have have myself, but I guess it's pretty easy and CHEAP! Then I could email you the .hex file, and you just transfer it to the chip, and then drive away! hurray!

I'm making good progress on the 1000amp controller, and that's using a dsPIC30F4011 40 pin chip, which you WILL be able to program with the programmer that you have, Ludiagsm! ya!
Hey Paul that is really nice I will ask Jack Bauer for his programmer.
my e-mail is ludiagsm@abv.bg maybe i must send you some money i can't believe that you do that big fever for free thank you
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Old 03-14-2010, 01:04 AM   #3176 (permalink)
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The software is free! That's the beauty of Open Source. Hurray! There's no way I would charge you for sending an email. hehe. Email is easy! It's milling and drilling that I hate. Well, dislike a lot.
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Old 03-14-2010, 01:16 AM   #3177 (permalink)
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The software is free! That's the beauty of Open Source. Hurray! There's no way I would charge you for sending an email. hehe. Email is easy! It's milling and drilling that I hate. Well, dislike a lot.
Well than i will wait email from you
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Old 03-14-2010, 01:37 AM   #3178 (permalink)
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Thank you for e-mails MPaulHolmes when i have some progress i will inform you here
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Old 03-14-2010, 07:11 AM   #3179 (permalink)
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Each "ounce" of copper is 35um so 2oz. boards have a 70um thick layer of copper.
Thank You !
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Old 03-14-2010, 01:46 PM   #3180 (permalink)
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I must replay you here because I have only 6 posts and I can't send you PM

120v - 10 12v Lead acid battery for now

What is the AH rating for your batteries?
100ah

Which motor are you using for your vehicle?
serial wound DC, two terminals

What is the voltage and current rating for the motor?
72v, 85a (I think), 2200 rpm

The Mosfets can be driven with a 0 to 12V signal quite nicely.
12 volts will turn the Mosfets on, and 0V will turn them off.
I know that, I ask which voltage is the best to trigger gates for my case (40 pcs IRFP260N), is it the best to be 12v or 20v or some other?


Peja
Peja,

Then we agree that these Mosfets can be driven with a 12vdc source.
Your drive circuit needs to be able to supply the current to
drive the capacitive input to this many Mosfets.
I am pointing that out because it sounded like you were
trying to use some discrete transistors that are
already owned or more easily obtained by you.
The Curtis schematic shows a sample that could work for you.
They are driving 32 of the BUZ30 Mosfets and those have a slightly
smaller gate capacitance than do your chosen IRFP260N devices.

The driver IC's that are used in the Revolt controller are a much
better choice and you should still be able to get them in time
to meet your project goal. You would also need the DC-DC
converter. You can find scrap DC-DCs on old Co-ax based
network cards that are in some of our junk boxes.

Cheers
Mark

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