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Search took 0.05 seconds. Search: Posts Made By: twotires
Forum: Open ReVolt: open source DC motor controller 06-30-2012, 12:25 PM
Replies: 7,381
Views: 2,407,902
Posted By MPaulHolmes
Ya, you need 2.5v to trick the controller into...

Ya, you need 2.5v to trick the controller into thinking that there's a current sensor there. To do that, just use like a 2.2k (or whatever you want) and a 2.2k from 5v to ground, and pick the middle...
Forum: Open ReVolt: open source DC motor controller 05-02-2012, 08:52 PM
Replies: 7,381
Views: 2,407,902
Posted By pamcmills
In response to electricstorm, I'm also using a...

In response to electricstorm, I'm also using a forklift motor in my S-10. It's a GE motor a little over 11 inch and in the 200 pound range. Except for the spline shafts and different bolt pattern on...
Forum: Open ReVolt: open source DC motor controller 04-24-2012, 08:52 AM
Replies: 7,381
Views: 2,407,902
Posted By jmcginley
I'm running a fork lift motor in my Toyota pickup...

I'm running a fork lift motor in my Toyota pickup at 120 volts. It works great with Paul's controller! I bought it from an outfit in Elgin, IL that has a lot of used and junked forklifts; there must...
Forum: Open ReVolt: open source DC motor controller 09-22-2011, 01:52 PM
Replies: 13
Views: 3,611
Posted By Freyguy
twotires, Glad you figured out to measure DC/DC...

twotires,
Glad you figured out to measure DC/DC output side reference power ground. I burned myself on that one when I first bench tested my controller.
The +12V draw of the controller should be in...
Forum: Open ReVolt: open source DC motor controller 09-16-2011, 10:05 AM
Replies: 13
Views: 3,611
Posted By DJBecker
The DC-DC converter will have a high frequency...

The DC-DC converter will have a high frequency triangle wave of 10mV-100mV superimposed on it's output. If it's higher (it likely is, or you wouldn't have mentioned it), check for a problem in the...
Forum: Open ReVolt: open source DC motor controller 03-17-2011, 10:41 PM
Replies: 7,381
Views: 2,407,902
Posted By MPaulHolmes
I recently read about the Kelly 600amp...

I recently read about the Kelly 600amp controller. Evidently, they use ten 330uF caps. Take it for whatever it's worth. 13 of the 470uF caps might be fine? The only reason I originally used 16 of...
Forum: Open ReVolt: open source DC motor controller 02-03-2011, 07:05 AM
Replies: 7,381
Views: 2,407,902
Posted By Nevyn
Soldering TQFP isn't so bad, once you know how to...

Soldering TQFP isn't so bad, once you know how to cheat! :) I'm not saying it's easy, it's just not demoniacally hard.

SMD Soldering Guide by Infidigm...
Forum: Open ReVolt: open source DC motor controller 01-12-2011, 05:00 PM
Replies: 7,381
Views: 2,407,902
Posted By MPaulHolmes
Hi TwoTires! It's just the 0.1uF caps for the...

Hi TwoTires! It's just the 0.1uF caps for the MAX232 that need to be 1uF. I think that tantalums would be fine.
Forum: Open ReVolt: open source DC motor controller 01-09-2011, 05:04 PM
Replies: 7,381
Views: 2,407,902
Posted By MPaulHolmes
Well dang it! That's not good. Right, it's just...

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...
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