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 03-07-2009, 05:27 PM   #521 (permalink)
PaulH
 
MPaulHolmes's Avatar
 
Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
Posts: 3,822

Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
Thanks: 1,365
Thanked 1,106 Times in 725 Posts
I think your grammar is excellent! I have no trouble understanding you. Thank you so much for writing! Your work is absolutely beautiful! I'm sure I'll have questions! How did you get such tight fitting and perfect drilling? What sort of equipment are you using?

__________________
kits and boards
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 03-07-2009, 06:44 PM   #522 (permalink)
EcoModding Lurker
 
Join Date: Mar 2009
Location: Croatia / EUROPE
Posts: 10
Thanks: 1
Thanked 0 Times in 0 Posts
MPaulHolmes

My coutroller is not 100% finished it's more like 89%
You are building your controller with microcontroller for brain ? Are you planing to put temp. monitoring and stuff like this or is it just for the PWM ?

The main diferent between your and mine is that mine is made with just ~100$. It's cheap and very simple , it's based on SG3525 ( for PWM ) , bd139/140 ( for sig.amp. ) , irfp450 ( for power grup x6 ) and for dides byv72ew200 x4 .
In a video it didn't have capacitor ( only one from power supply ) I'm putting few in there ! All electronics are electricaly isolated from the aluminiun box but they aren't thermal isolated !!
  Reply With Quote
Old 03-07-2009, 06:57 PM   #523 (permalink)
PaulH
 
MPaulHolmes's Avatar
 
Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
Posts: 3,822

Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
Thanks: 1,365
Thanked 1,106 Times in 725 Posts
$100!!! That's awesome!!!!!!! You are very talented. That's going to be a great controller. I saw your motor cycle. Very nice! What tools did you use to make such a beautiful box???!!! It was amazing!

That's the nice thing about a metal box is the heat can get out! hehe. My controller has an ATMega8 for PWM and monitoring throttle position, current, and temperature. Later I'll add a sensor to limit motor RPM too. I had an extra A/D channel I wasn't using, so why not? And it's only about an extra $5 to do it. Current limiting is also implemented in hardware. The hardware sends a signal to the microcontroller that the mosfet driver has been disabled. The microcontroller then waits for the current to come back under 500 amps, and then re-enables the mosfet driver.

I fixed a few mistakes in the program. I tested everything in the simulator, and it all seems to work very well. I think it's ready to put on the chip. Now all I need to do is finish the breadboard of the control circuit to test it out. Well, I also need to finish the dang box. It's getting close!
__________________
kits and boards

Last edited by MPaulHolmes; 03-07-2009 at 11:13 PM..
  Reply With Quote
Old 03-08-2009, 05:25 PM   #524 (permalink)
PaulH
 
MPaulHolmes's Avatar
 
Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
Posts: 3,822

Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
Thanks: 1,365
Thanked 1,106 Times in 725 Posts
I mostly finished the box. It will work best I think with the heat sink down rather than up. Now I just need to add 4 holes on maybe the M- side? For 12v+, 12v-, and 2 wires for 5k pot.







__________________
kits and boards
  Reply With Quote
Old 03-08-2009, 05:31 PM   #525 (permalink)
EV-FNG
 
Join Date: Feb 2009
Location: Keene NH
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via AIM to krispyllama Send a message via Yahoo to krispyllama
All these chips and extra parts are making it a little hard to follow. Just got internet back (just moved to a new house). Took some time while at work to catch up.

Paul, you program these chips using C, is there any good source you can suggest for someone like myself to get into the language? I used to use QBasic way back and jumped to visual studio 6.0. So basic is about all I know. I have been out some time but want to get back into things. The project looks great. Also you mentioned that you can get double sided 4oz copper boards would that mean 2oz per side or 8 total ozs? I can't wait till Ben gets his hands on this. Seeing the union of the best guys in the ev scene will be great. Will we be seeing them metro tired smoking? I'm sure we will.

Keep up the good work guys. I'm learning so much from you all.
  Reply With Quote
Old 03-08-2009, 05:51 PM   #526 (permalink)
PaulH
 
MPaulHolmes's Avatar
 
Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
Posts: 3,822

Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
Thanks: 1,365
Thanked 1,106 Times in 725 Posts
I'm pretty sure that 2 sided 4 ounce copper means 4 ounce copper on each side. I got some 3 ounce double sided PCB and it is 3 ounce on each side.

Hmm... A good book on C? Microcontroller programming is quite a bit simpler in a sense than regular programming. Any basic C tutorial on loops, if..then statements, and bit operations would be fine for micro-controller programming. This looked like a pretty good place:

C tutorial! ya!
__________________
kits and boards
  Reply With Quote
Old 03-08-2009, 06:15 PM   #527 (permalink)
EV-FNG
 
Join Date: Feb 2009
Location: Keene NH
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via AIM to krispyllama Send a message via Yahoo to krispyllama
Talking

Thanks for the quick reply and link. I'm still stuck guarding this place till 11 so I have lots of time on my hands and will read up. I tend to think too deeply when programming so I'm sure ill do the same with these chips. I think I alreayd have the basics figured out like the physical pins are just variables that can be read via the program. At least that's how I would design a chip. I was very comfortable learning assembly language several years ago but writing a program with that in your head can give one a migrain esp if the program is as complex as yours. Well ill stop bugging you and let you get back to work. Also great pics. Makes me want to get back into modding I have 2 ccfl lights with the 12volt driver if you ever want to pimp out the box lol ones blue and ones red, gives a nice wash with a purple mid-range. Just say the word and its yours.
  Reply With Quote
Old 03-08-2009, 07:30 PM   #528 (permalink)
EcoModder Student
 
esoneson's Avatar
 
Join Date: Nov 2008
Location: Youngsville, NC
Posts: 117
Thanks: 11
Thanked 11 Times in 10 Posts
Beauty, Paul, real beauty!
__________________
1995 BMW 318i EV in the making
  Reply With Quote
Old 03-08-2009, 10:05 PM   #529 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 21,126

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 53.67 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 73.57 mpg (US)
Thanks: 2,917
Thanked 5,764 Times in 2,981 Posts
I agree - that box is awesome, Paul. I'd definitely want to show off my controller like that!

--

Oh - congrats on winning the "Mod of the Month" contest for projects active in Feb 2009: http://ecomodder.com/forum/showthrea...onth-7325.html !
__________________
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
Old 03-09-2009, 02:31 AM   #530 (permalink)
PaulH
 
MPaulHolmes's Avatar
 
Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
Posts: 3,822

Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
Thanks: 1,365
Thanked 1,106 Times in 725 Posts
We won??!! Yahoo!!!!!!!! I can't wait for the free t-shirt! I'm so excited!!! Go Paul, It's your birthday, light a candle, throw a party!

__________________
kits and boards
  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 3457 10-03-2019 04:50 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 - 2019, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com