Go Back   EcoModder Forum > EcoModding > Fossil Fuel Free > Open ReVolt: open source DC motor controller
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 11-12-2009, 07:08 PM   #2571 (permalink)
PaulH
 
MPaulHolmes's Avatar
 
Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
Posts: 3,832

Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
Thanks: 1,368
Thanked 1,119 Times in 734 Posts
Hey Alvin! Have you gotten the new chip yet? You will have to turn the pot on the control board clockwise about 1/5 of the range of motion. Then if you have a computer with a serial port, you can change various settings.

By the way, I think it doesn't matter at all if you include something to support the capacitors or not.

__________________
kits and boards
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 11-12-2009, 07:17 PM   #2572 (permalink)
EcoModding Apprentice
 
apowers's Avatar
 
Join Date: Aug 2009
Location: Tn
Posts: 126
Thanks: 14
Thanked 18 Times in 15 Posts
Hi Paul. No I have not gotten it yet but thanks in advance. I just noticed your other thread this morning. You just don't quit do you? Ha Ha
Thanks again
Alvin
  Reply With Quote
Old 11-12-2009, 09:45 PM   #2573 (permalink)
EcoModding Lurker
 
Join Date: Jun 2009
Location: Australia
Posts: 35
Thanks: 0
Thanked 3 Times in 3 Posts
Quote:
Originally Posted by sawickm View Post
Hey, are you guy's using the revision "D" controller

If you are could you post the rev.D firmware in the wiki ??? the schematic and artwork is in there, but no firmware was posted.

The Rev.D controller has pre-charge and extra I/O on-board.

Thanks,

-Mark
Mark,

The reason there is no firmware for revision D in the wiki is that I haven't written it yet. I've just got a working hardware prototype, so I will be doing that soon ( a week or two).

Don
  Reply With Quote
Old 11-12-2009, 10:39 PM   #2574 (permalink)
EcoModding Lurker
 
Join Date: Sep 2009
Location: Western NY
Posts: 27
Thanks: 5
Thanked 1 Time in 1 Post
Paul

I'm working on the kit and tweeking the instructions. What is the sequence for J2? I guess I could look up the pin outs on a DB9. Als, am I supposed to have 3 or 4 polypropylene caps? I only got three in my kit.

John
  Reply With Quote
Old 11-12-2009, 10:51 PM   #2575 (permalink)
PaulH
 
MPaulHolmes's Avatar
 
Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
Posts: 3,832

Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
Thanks: 1,368
Thanked 1,119 Times in 734 Posts
Hey John! I've made about 6 controllers with 3 polypropylene caps, and then I tried one with 4, and it caused clearance problems, since I didn't have enough room for the 4th one to lay flat. It doesn't seem to affect performance at all, so I should change the directions to reflect that.

Here are a couple pictures for J2:

This is a picture from the DB9 top (the 5 pins sticking out):

And here's another view:


And now for the side that goes into the control board......... You are looking at the top. If I didn't send that part (it's easier just to solder the dang wires right into the holes), then just solder the wires in the same order. (black white red, left to right, or whatever colors they are now. hehe.)
__________________
kits and boards
  Reply With Quote
Old 11-12-2009, 10:54 PM   #2576 (permalink)
PaulH
 
MPaulHolmes's Avatar
 
Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
Posts: 3,832

Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
Thanks: 1,368
Thanked 1,119 Times in 734 Posts
And the 3 should lay like this:


You may have 2.2uF ones, and the ones in that picture were 4.7uF. I was told by people that know a lot more than me that the capacitance wasn't the important thing, just the ESR.
__________________
kits and boards
  Reply With Quote
Old 11-13-2009, 02:24 PM   #2577 (permalink)
Joe
 
Join Date: Feb 2009
Location: phx
Posts: 260
Thanks: 0
Thanked 41 Times in 34 Posts
Quote:
Originally Posted by Renny_D View Post
On the heat spreader I assume thicker is better but has any body done a fined one? I thought of just getting a block and a carbide bit for my table saw and doing some machining of fins for better cooling?

PS would love to see more videos and pics of completed units and completed units in cars.
Regarding the heat spreader, it's purpose is to move heat to the heat exchanger (whatever you happen to choose as your heat exchanger - i have a finned heatsink under the baseplate) and keep a more uniform temperature across all the mosfets and diodes (particularly the diodes).

If it's too thick and increases the distance between the mosfets and heat exchanger, you'll lose thermal efficiency and the controller will run hotter. Too thin and you'll increase the likelihood of different component temperatures.

Regarding the base plate, a thinner material may help if you have a heat sink attached to the bottom. You want to get the components as close to the heat exchanger as possible. In fact, removing the base plate and having the heat spreader bolt right to the heatsink would be best, though I think the actual difference may be insignificant, like a couple degrees.

If you don't have a heatsink/coldplate/heatpump or something, you better be taking short trips at low amperage and/or low voltage. A large baseplate may have enough thermal mass to 'soak up' the heat after a short drive, but without a real heat exchanger that heat will stay there for a while.


Here's a picture of the Curtis I had before - the Cougar is now in its place. You can barely make out the heatkink fins underneath - there's also 3 muffin fans moving some air through the heatsink fins.

__________________
ReVolt AZ testing thread:

http://ecomodder.com/forum/showthrea...ting-9325.html
  Reply With Quote
Old 11-13-2009, 04:23 PM   #2578 (permalink)
Master EcoModder
 
jackbauer's Avatar
 
Join Date: Sep 2009
Location: Ireland
Posts: 734
Thanks: 26
Thanked 296 Times in 168 Posts
Paul i think it was mainly the 16 and 18series pics but i'll double check. Bauer household has the flu right now ,obviously a bio weapon so will be a day or so.
  Reply With Quote
Old 11-13-2009, 07:11 PM   #2579 (permalink)
EcoModding Apprentice
 
Join Date: May 2009
Location: Orrville, Ohio
Posts: 108
Thanks: 9
Thanked 2 Times in 2 Posts
Bus bar direction & Heatsink

Hi,jyanof. Good to hear your controller is holding up. Have ordered ,by way of wifes good graces, the control board and parts for my own controller project. Wanted to ask if your bus bars all point the same way, and if I could build it that way without harming anything. Also was thinking of a thin baseplate and heatsink, with 2 12v computer fans. Keep us posted, Watt.
  Reply With Quote
Old 11-13-2009, 08:23 PM   #2580 (permalink)
Joe
 
Join Date: Feb 2009
Location: phx
Posts: 260
Thanks: 0
Thanked 41 Times in 34 Posts
Quote:
Originally Posted by watt-a-mezz View Post
Hi,jyanof. Good to hear your controller is holding up. Have ordered ,by way of wifes good graces, the control board and parts for my own controller project. Wanted to ask if your bus bars all point the same way, and if I could build it that way without harming anything. Also was thinking of a thin baseplate and heatsink, with 2 12v computer fans. Keep us posted, Watt.

Now that I'm home, I took a picture of the new controller. Yes, all 3 bus bars go out the same direction and I made some bus 'adapter' bars so that the lugs didn't interfere. I did something similar with the Curtis, and no problems so far.


__________________
ReVolt AZ testing thread:

http://ecomodder.com/forum/showthrea...ting-9325.html
  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Paul and Sabrina's Cheap 3 Phase Inverter (AC Controller) with Field Oriented Control MPaulHolmes Fossil Fuel Free 3472 01-12-2021 04:47 PM
Paul & Sabrina's Cheap EV Conversion MPaulHolmes Fossil Fuel Free 542 11-12-2016 09:09 PM
Three Dirt Cheap DIY Electric Cars - Part 5 SVOboy EcoModder Blog Discussion 0 12-12-2008 04:10 PM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com