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 01-05-2012, 06:40 PM   #5381 (permalink)
EcoModding Lurker
 
Join Date: Jan 2012
Location: Henderson ky
Posts: 10
Thanks: 7
Thanked 2 Times in 2 Posts
No, just when the throttle is pressed

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 01-05-2012, 06:52 PM   #5382 (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: 1,362
Thanked 1,202 Times in 765 Posts
OK, then the pwm isn't making it from the microcontroller to the output of the driver. We just need to backtrack until we find where it's not making it. It's then probably just a bad solder joint or something. OK! Now, check the voltage across R16. One probe on one side of R16, and the other on the other side of R16, at zero throttle and at some nonzero throttle.
__________________
kits and boards
  Reply With Quote
The Following User Says Thank You to MPaulHolmes For This Useful Post:
Ken6881 (01-06-2012)
Old 01-05-2012, 06:56 PM   #5383 (permalink)
EcoModding Lurker
 
Join Date: Jan 2012
Location: Henderson ky
Posts: 10
Thanks: 7
Thanked 2 Times in 2 Posts
there is no voltage across r16 at any time ( i did check my voltmeter to ensure it was working)
  Reply With Quote
Old 01-05-2012, 08:04 PM   #5384 (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: 1,362
Thanked 1,202 Times in 765 Posts
OK, so the mosfet driver is probably fine. The next culprit to check out is the HCPL-4504 optocoupler. Check opposite sides of R15 at zero and full throttle.
__________________
kits and boards
  Reply With Quote
The Following User Says Thank You to MPaulHolmes For This Useful Post:
Ken6881 (01-06-2012)
Old 01-05-2012, 08:25 PM   #5385 (permalink)
EcoModding Lurker
 
Join Date: Jan 2012
Location: Henderson ky
Posts: 10
Thanks: 7
Thanked 2 Times in 2 Posts
it is also zero at all times

for fun i went ahead and checked r14 and it is .88v at all times
  Reply With Quote
Old 01-06-2012, 01:33 AM   #5386 (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: 1,362
Thanked 1,202 Times in 765 Posts
Try it with R12.
__________________
kits and boards
  Reply With Quote
The Following User Says Thank You to MPaulHolmes For This Useful Post:
Ken6881 (01-06-2012)
Old 01-06-2012, 07:49 AM   #5387 (permalink)
EcoModding Lurker
 
Join Date: Jan 2012
Location: Henderson ky
Posts: 10
Thanks: 7
Thanked 2 Times in 2 Posts
0v at zero throttle and 4.5v at full for R12
  Reply With Quote
Old 01-06-2012, 08:06 AM   #5388 (permalink)
EcoModding Apprentice
 
Join Date: Oct 2009
Location: Jyvaskyla, Finland
Posts: 143

Golfwagen - '89 Volkswagen Golf mk2
90 day: 107.14 mpg (US)
Thanks: 44
Thanked 35 Times in 28 Posts
Is your controller connected to a motor? If yes, how? (I mean which wire goes where).
  Reply With Quote
Old 01-06-2012, 08:51 AM   #5389 (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: 1,362
Thanked 1,202 Times in 765 Posts
Well good! the PWM is working!! What's Pin 2, 6, 9, or 13 doing of the NAND (U5)? They should all be connected together, so I guess you could check that the resistance from one of those 4 pins to another is almost zero. I'd check ALL the solder joints connected in any way to U5, because I think that's where the problem is.
__________________
kits and boards
  Reply With Quote
The Following User Says Thank You to MPaulHolmes For This Useful Post:
Ken6881 (01-06-2012)
Old 01-06-2012, 05:54 PM   #5390 (permalink)
EcoModding Lurker
 
Join Date: Jan 2012
Location: Henderson ky
Posts: 10
Thanks: 7
Thanked 2 Times in 2 Posts
That was it, resoldered U5 pins and tested PH1 and PH2 to GR 1-10, got voltages. Then reconnected to pack, precharged, closed contactor. Controls motor! Thanks Paul!

  Reply With Quote
The Following User Says Thank You to Ken6881 For This Useful Post:
MPaulHolmes (01-06-2012)
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 3431 05-04-2022 05:43 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 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com