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 08-03-2014, 07:34 AM   #6771 (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
Yes, but if the moment of full throttle was longer than 0.1sec, there would be a throttle fault, and it would disable the throttle. Even though this sounds like it could be pretty common, I've never heard of a throttle doing this in all the 5 years. I don't mind using a hall effect sensor. I've used a 0-5k pot default in the past because that's just what most people had (the curtis pb-6). It also made debugging easy, since I could just go get a $2 pot at radio shack. It was also easy to detect throttle faults. If the throttle line broke, it would go to infinity, which would be out of range, which would disable things.

The other concern I have is the signal being from 0v to 5v. At the moment, zero throttle is like 1.5v, and full is 3.5v (or vice versa), which protects the port from being close to 0 or 5v. 0v with noise would push it to the dreaded -0.6v (or 5.6v). The poor little diodes on the port have to conduct to prevent that. I know Damien has used one for some time. I'm sure they are fine. Those are just the thoughts running thru my head. Let me check out the hall effect throttle... brb.

Wow! That looks simple. Are they available outside of australia? It seemed like Damien's had 10 wires or something. I could be wrong.

__________________
kits and boards
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 08-03-2014, 08:55 AM   #6772 (permalink)
Dreamer
 
Join Date: Nov 2013
Location: Australia
Posts: 350
Thanks: 95
Thanked 210 Times in 150 Posts
Quote:
Originally Posted by MPaulHolmes View Post
Wow! That looks simple. Are they available outside of australia? It seemed like Damien's had 10 wires or something. I could be wrong.
I found one on eBay. Shipped from China for USD$75.99 including postage. Which is cheaper than the EV Works one.
Throttle PB 6 Type 0 5V Hall Effect Throttle BOX | eBay
They look the same, it may be a factory in China that supplies Ev Works just selling them direct on eBay. Or maybe the EV Works one is produced locally and the eBay one is a copy.
I have ordered the eBay one, it will be interesting to see what it is like.

Just had another thought, it shouldn't be too difficult to adjust the throttle arms travel to make it output 1.5v to 3.5v if required. Thereby avoiding any noise related excursions into diode death valley.

Last edited by Astro; 08-03-2014 at 09:05 AM.. Reason: Limiting throttle range
  Reply With Quote
Old 08-03-2014, 09:10 AM   #6773 (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
Lol. I'm right now just adding both as an option. You want hall? Ok. Use the connector labeled hall. You want pot? Visit my hometown of olympia washington. Haha. I'll just include 2 more robust diodes on the throttle port for safety. Then you wouldn't need to worry.
__________________
kits and boards
  Reply With Quote
The Following 2 Users Say Thank You to MPaulHolmes For This Useful Post:
Astro (08-03-2014), jedsmd (08-03-2014)
Old 08-03-2014, 09:58 AM   #6774 (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
A 3rd alternative is to use my ex brother in laws head for a throttle, since he's a pot head. Haha.
__________________
kits and boards
  Reply With Quote
Old 08-03-2014, 11:43 AM   #6775 (permalink)
PLUGnGO
 
jedsmd's Avatar
 
Join Date: Sep 2012
Location: Olympia Wa
Posts: 132
Thanks: 73
Thanked 75 Times in 52 Posts
Quote:
Originally Posted by MPaulHolmes View Post
Lol. I'm right now just adding both as an option. You want hall? Ok. Use the connector labeled hall. You want pot? Visit my hometown of olympia washington. Haha. I'll just include 2 more robust diodes on the throttle port for safety. Then you wouldn't need to worry.
Sound like those of us who already have controllers are out of luck.
  Reply With Quote
Old 08-03-2014, 11:48 AM   #6776 (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
Not necessarily. You can make a simple modification to the board that would allow a hall sensor. Cut out a couple resistors, add a wire or 2 and KABLAMEE... hall effect.
__________________
kits and boards
  Reply With Quote
The Following User Says Thank You to MPaulHolmes For This Useful Post:
jedsmd (08-03-2014)
Old 08-03-2014, 12:09 PM   #6777 (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
If you want to order one, I'll make the code change. You would have to take the board out for the change to hardware.
__________________
kits and boards
  Reply With Quote
Old 08-03-2014, 02:28 PM   #6778 (permalink)
PLUGnGO
 
jedsmd's Avatar
 
Join Date: Sep 2012
Location: Olympia Wa
Posts: 132
Thanks: 73
Thanked 75 Times in 52 Posts
Quote:
Originally Posted by MPaulHolmes View Post
If you want to order one, I'll make the code change. You would have to take the board out for the change to hardware.
Thinking about it. But don't make the code changes for it yet. If I continue to have problems with the pot I will order a hall one and ask you to Betty Crocker the hardware changes.
  Reply With Quote
Old 08-04-2014, 09:19 AM   #6779 (permalink)
Dreamer
 
Join Date: Nov 2013
Location: Australia
Posts: 350
Thanks: 95
Thanked 210 Times in 150 Posts
Quote:
Originally Posted by Astro View Post
I found one on eBay. Shipped from China for USD$75.99 including postage. Which is cheaper than the EV Works one.
Throttle PB 6 Type 0 5V Hall Effect Throttle BOX | eBay
They look the same, it may be a factory in China that supplies Ev Works just selling them direct on eBay. Or maybe the EV Works one is produced locally and the eBay one is a copy.
I have ordered the eBay one, it will be interesting to see what it is like.
Well they accepted my USD$50 (excluding postage) offer. Now i just have to wait for it to arrive.
  Reply With Quote
The Following User Says Thank You to Astro For This Useful Post:
jedsmd (08-04-2014)
Old 08-05-2014, 05:26 AM   #6780 (permalink)
EV Connoisseur
 
Join Date: Aug 2010
Location: Amsterdam
Posts: 309
Thanks: 70
Thanked 107 Times in 89 Posts
Paul,

Is it possible to create a 'rtd' command, that would spit out one line of rtd data on request? in addition to the rtd-period.

I'm having a hard time with the continuous stream of data on the raspberry a.t.m. and such a command would help me a lot.

thanks.

  Reply With Quote
The Following User Says Thank You to flores For This Useful Post:
MPaulHolmes (08-05-2014)
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 3477 05-24-2021 03:28 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