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 01-09-2011, 12:22 PM   #4191 (permalink)
EcoModding Lurker
 
Join Date: Jan 2011
Location: Lubbock, Texas
Posts: 11
Thanks: 0
Thanked 1 Time in 1 Post
The scienceprog dot com link is some type of file that I can't open. Were you trying to send a link to a website for me to read?

jake

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 01-09-2011, 05:04 PM   #4192 (permalink)
PaulH
 
MPaulHolmes's Avatar
 
Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
Posts: 3,831

Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
Thanks: 1,367
Thanked 1,115 Times in 730 Posts
Quote:
Originally Posted by twotires View Post
I ordered an equal since that particular part wasn't available at Digikey or Mouser, and alas, the equal (rated for 3A instead of 2A) is a larger part and won't fit the board.
Well dang it! That's not good. Right, it's just there for reverse polarity protection. In general, it's never going to conduct unless you reversed your 12v wires by mistake. I think those others you have would be just fine.
__________________
kits and boards
  Reply With Quote
The Following User Says Thank You to MPaulHolmes For This Useful Post:
twotires (01-09-2011)
Old 01-11-2011, 11:42 PM   #4193 (permalink)
EcoModding Lurker
 
Join Date: Apr 2010
Location: sacramento
Posts: 12
Thanks: 1
Thanked 1 Time in 1 Post
Quote:
Originally Posted by emeded View Post
By the way, if anyone has found that their serial communications isn't working, it may be because of using 0.1uF caps with a MAX232 chip. It was just pointed out to me by a friend that I had been misreading the max232 datasheet. The max232 datasheet says 1uF caps are required, whereas you can use 0.1uF caps with the max202. But I had sent 0.1uF caps with a max232. I'll order some 1uF and figure out who to send them to. It should be pretty easy to add them to the top of the board without having to desolder the 0.1uF caps.

Thanks Paul!
I will update wiki part list with the new parts.
For the capacitors, are we talking about C2-C19 caps (K104K15X7RF5TH5)?
Do you have a specific part for the substitution?

Thanks

Erni
Hi Paul,
what's the deal with those caps? Do you have a part number for the new ones? I wanted to update the wiki.

Thanks

Erni
  Reply With Quote
Old 01-11-2011, 11:47 PM   #4194 (permalink)
EcoModding Lurker
 
Join Date: Apr 2010
Location: sacramento
Posts: 12
Thanks: 1
Thanked 1 Time in 1 Post
Quote:
Originally Posted by MPaulHolmes View Post
Well dang it! That's not good. Right, it's just there for reverse polarity protection. In general, it's never going to conduct unless you reversed your 12v wires by mistake. I think those others you have would be just fine.
twotires,
could you update the part list once you find part that fits on the board, or just write it here in the forum so we can update the part list?

Thx.

Erni
  Reply With Quote
Old 01-11-2011, 11:54 PM   #4195 (permalink)
PaulH
 
MPaulHolmes's Avatar
 
Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
Posts: 3,831

Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
Thanks: 1,367
Thanked 1,115 Times in 730 Posts
I changed the wiki this morning so that everything should be good. Instead of a max232, it's the equivalent of a max202, which can use 0.1uF caps. Also, the 3 amp diode was replaced with one that will fit.
__________________
kits and boards
  Reply With Quote
Old 01-11-2011, 11:58 PM   #4196 (permalink)
EcoModding Lurker
 
Join Date: Apr 2010
Location: sacramento
Posts: 12
Thanks: 1
Thanked 1 Time in 1 Post
Quote:
Originally Posted by MPaulHolmes View Post
I changed the wiki this morning so that everything should be good. Instead of a max232, it's the equivalent of a max202, which can use 0.1uF caps. Also, the 3 amp diode was replaced with one that will fit.
Great, thanks Paul!
  Reply With Quote
Old 01-12-2011, 03:04 PM   #4197 (permalink)
EcoModding Noob
 
twotires's Avatar
 
Join Date: Dec 2010
Location: Raleigh, NC, USA
Posts: 24
Thanks: 9
Thanked 4 Times in 3 Posts
Uh-oh ... I already soldered in a MAX232. Do I need to swap out C7, C8, C9, C10, and C12 to 1uFs instead of 0.1uFs?

Also, the 9-Pin sub-D Female serial connector needs to be added to the BOM, and the 5-Pin Molex connector and pins can be removed, I think.

Most people don't install that 5-Pin connector, do they?

Now I wish I had taken time to read all 423 pages of this thread!
  Reply With Quote
Old 01-12-2011, 03:11 PM   #4198 (permalink)
EcoModding Lurker
 
Join Date: Apr 2010
Location: sacramento
Posts: 12
Thanks: 1
Thanked 1 Time in 1 Post
Maybe we should keep this thread for the 144V 500amp controller, and create another thread for new 1000amp controller, one for AC controller and one for the charger. It would keep things more organized, and easier to find/navigate/read. Just a suggestion.

Paul what do you think?
  Reply With Quote
Old 01-12-2011, 03:35 PM   #4199 (permalink)
PaulH
 
MPaulHolmes's Avatar
 
Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
Posts: 3,831

Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
Thanks: 1,367
Thanked 1,115 Times in 730 Posts
Hi Two Tires! I just ordered some 1uF caps. You could remove the 0.1uF caps or you could add the 1uF caps by soldering their legs to the legs of the 0.1uF caps, and chopping the head part off of the 0.1uF ones? I bet that would be pretty easy. I can mail you some for free if you want. PM me your address, and I'll send you some.

There is a AC thread, but no 1000amp thread. That's not a bad idea. Man, it would be so easy to do it now. I just need another week or so where I'm not doing anything. makes me mad!!!
__________________
kits and boards
  Reply With Quote
Old 01-12-2011, 04:48 PM   #4200 (permalink)
EcoModding Noob
 
twotires's Avatar
 
Join Date: Dec 2010
Location: Raleigh, NC, USA
Posts: 24
Thanks: 9
Thanked 4 Times in 3 Posts
Hey, thanks Paul. I've got some 1uF tantalums - they're polarized, though. Not a big deal as the schematic shows which end is + and -.

Is it just the (5) caps around the RS232 interface, or should I change out all (13) of the 0.1uFs?

My controller has passed all the checks up until you hook it up to the power section - I've not bought a power section yet, so I've no current sensor or RT1 hooked up yet - powers up fine and the yellow LED is flashing about 100 HZ, so I think everything is successful to this point! Yeah! This is way cool - can't wait to finish up the whole thing.

  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 3471 06-01-2020 10:53 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 - 2020, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com