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Search took 0.06 seconds. Search: Posts Made By: flores
Forum: Fossil Fuel Free 09-16-2016, 01:33 AM
Replies: 3,480
Views: 915,249
Posted By MPaulHolmes
I got a new board made! I just want to mention...

I got a new board made! I just want to mention that I have really appreciated having Astro's controller for testing. I"m going to solder him one of the new boards.

This one includes voltage...
Forum: Fossil Fuel Free 07-21-2015, 04:37 PM
Replies: 12
Views: 3,517
Posted By cts_casemod
Just to get started on this thread Ill share some...

Just to get started on this thread Ill share some of the work I've been doing:

Disclosure: My work is primarilly concerning a single stage PFC controller, as such topology is slightly different...
Forum: Fossil Fuel Free 10-07-2014, 01:53 PM
Replies: 3,480
Views: 915,249
Posted By MPaulHolmes
It just took a huge leap closer to working last...

It just took a huge leap closer to working last night! Morgan LaMoore and Edward Cheeseman had some wonderful debugging ideas, and also this very helpful formula(s):

Va = duty1 - (average of the...
Forum: Open ReVolt: open source DC motor controller 09-29-2014, 05:50 PM
Replies: 7,381
Views: 2,409,244
Posted By jedsmd
Paul is right about the controller being smooth. ...

Paul is right about the controller being smooth. It responds to the pedal beautifully - even when creeping along with the motor barely turning. The controller also responds well to sudden throttle...
Forum: Open ReVolt: open source DC motor controller 09-03-2014, 09:45 AM
Replies: 7,381
Views: 2,409,244
Posted By MPaulHolmes
I shiuld probably send you the most recent code...

I shiuld probably send you the most recent code too. Was it a standard 0-5k throttle, with 0Ohm being zero throttle?
Forum: Open ReVolt: open source DC motor controller 08-21-2014, 09:27 AM
Replies: 7,381
Views: 2,409,244
Posted By MPaulHolmes
Those would be good. I've used that company's...

Those would be good. I've used that company's igbts for my job.
Forum: Open ReVolt: open source DC motor controller 08-21-2014, 05:57 AM
Replies: 7,381
Views: 2,409,244
Posted By MPaulHolmes
I think you would still need an external...

I think you would still need an external freewheel diode though. The dual igbts have the low side IGBT's diode acting as the freewheel diode.
Forum: Fossil Fuel Free 08-12-2014, 01:55 PM
Replies: 3,480
Views: 915,249
Posted By MPaulHolmes
haha, I know! Oh I just submitted the AC...

haha, I know!

Oh I just submitted the AC control/driver board a minute ago. I paid extra for the setup fee so the board will be white. I thought it would look cool. silver and white, with...
Forum: Fossil Fuel Free 08-10-2014, 11:28 PM
Replies: 3,480
Views: 915,249
Posted By Astro
Paul, Ever since i saw the copper sheet...

Paul,
Ever since i saw the copper sheet connecting the IGBT's to the Ring cap i have thought why not use something more solid.
Apologies for the terrible sketch. :o

I thought two concentric...
Forum: Open ReVolt: open source DC motor controller 08-07-2014, 11:51 AM
Replies: 7,381
Views: 2,409,244
Posted By MPaulHolmes
For anyone wanting to convert their 0-5k PB-6...

For anyone wanting to convert their 0-5k PB-6 throttle to hall effect, you can just take the original pot out and put this in:
...
Forum: Open ReVolt: open source DC motor controller 08-07-2014, 08:54 AM
Replies: 7,381
Views: 2,409,244
Posted By MPaulHolmes
Well, I think that would be fine then. I just...

Well, I think that would be fine then. I just finished the changes for a new command that gives a single stream and then stops. The command is ...

rtd

Boy that was dramatic. I'll email you...
Forum: Open ReVolt: open source DC motor controller 08-05-2014, 09:29 PM
Replies: 7,381
Views: 2,409,244
Posted By jhornbr225
Hello All, Longtime lurker, recently...

Hello All,

Longtime lurker, recently registered. I read this entire thread over the last week or so and can only say WOW.

Paul, you have made the difficult possible. You went from what seemed...
Forum: Open ReVolt: open source DC motor controller 08-05-2014, 07:55 AM
Replies: 7,381
Views: 2,409,244
Posted By MPaulHolmes
No problem. I have the flu right now, so it...

No problem. I have the flu right now, so it might take a day to get to it.
Forum: Open ReVolt: open source DC motor controller 07-31-2014, 08:32 AM
Replies: 7,381
Views: 2,409,244
Posted By Astro
Flores, correct me if i am wrong. If the...

Flores, correct me if i am wrong.

If the raspberryPi is setup as a wifi access point then any wifi enabled device(s) should be able to connect to it, tablets, smartphones, laptop etc.
Those...
Forum: Open ReVolt: open source DC motor controller 07-23-2014, 04:58 PM
Replies: 7,381
Views: 2,409,244
Posted By MPaulHolmes
Don't worry, my serial code is probably buggy...

Don't worry, my serial code is probably buggy too. haha. CR I think is current reference?? (throttle position on a scale of 0-512 I believe). CF is current feedback on a scale of 0-512 at the...
Forum: Open ReVolt: open source DC motor controller 07-20-2014, 05:20 AM
Replies: 7,381
Views: 2,409,244
Posted By MPaulHolmes
The sbe cap is like one big snubber. It's one of...

The sbe cap is like one big snubber. It's one of the selling points. They actually advertise that it eliminates the need for a snubber cap. The stray inductance of that capacitor, assuming a...
Forum: Open ReVolt: open source DC motor controller 07-17-2014, 12:42 AM
Replies: 7,381
Views: 2,409,244
Posted By jedsmd
Test run today with revised max current (800...

Test run today with revised max current (800 amps) and accelerator dead zone (6%). Both setting are good!

Really nice -- Very smooth fine control for parking, no valet switch will be needed.
...
Forum: Open ReVolt: open source DC motor controller 07-16-2014, 02:24 AM
Replies: 7,381
Views: 2,409,244
Posted By jedsmd
Loaded the software (Thank-you Paul) and took the...

Loaded the software (Thank-you Paul) and took the first test run today.

As Flores had reassured, loading the program with MpLab/Pickit3 was simple and uneventful.

Turned on the truck, a few...
Forum: Open ReVolt: open source DC motor controller 07-14-2014, 02:30 PM
Replies: 7,381
Views: 2,409,244
Posted By MPaulHolmes
Well, now that you mention it, yes! That would...

Well, now that you mention it, yes! That would be good. I had been half-heartedly trying to keep things as similar as possible to the other serial structure, but I've had to depart from it...
Forum: Open ReVolt: open source DC motor controller 07-13-2014, 09:24 AM
Replies: 7,381
Views: 2,409,244
Posted By MPaulHolmes
Ooh, now that I think about it, that would be...

Ooh, now that I think about it, that would be 100amp on a single IGBT. so, total motor amps would be in the neighborhood of 3*100. Don't program the motor amps to anything over, say, 400. 400...
Forum: Open ReVolt: open source DC motor controller 07-08-2014, 08:00 AM
Replies: 7,381
Views: 2,409,244
Posted By MPaulHolmes
Hi Flores. Nope, it doesn't matter which one...

Hi Flores. Nope, it doesn't matter which one plugs in where. I think the lengths work out best if the shortest sensor plugs into the connector that's closest to the copper sheets. Then the medium...
Forum: Open ReVolt: open source DC motor controller 07-07-2014, 04:15 PM
Replies: 7,381
Views: 2,409,244
Posted By MPaulHolmes
The capacitor could be run at like 500v. You...

The capacitor could be run at like 500v. You would probably need 2 of them if you wanted 2000amp for any extended period of time.

They have 800amp, 900amp, 1000amp, and 1400amp 1200v IGBTs. ...
Forum: Open ReVolt: open source DC motor controller 07-07-2014, 11:28 AM
Replies: 7,381
Views: 2,409,244
Posted By MPaulHolmes
They are uploading to photobucket right now. Let...

They are uploading to photobucket right now. Let me see if they are done...

dc-dc mounting. Use two 0.25" spacers per hole included (so it's 0.5" away from the aluminum enclosure):...
Forum: Open ReVolt: open source DC motor controller 07-03-2014, 02:47 AM
Replies: 7,381
Views: 2,409,244
Posted By jedsmd
End Panel details ...

End Panel details
http://i.imgur.com/xSEAOj7.jpg


http://i.imgur.com/OctZTzl.jpg
Cut a piece of ABS the size of the end of the controller. I used 1/8" sheet because I had some, I think 1/4"...
Forum: Open ReVolt: open source DC motor controller 07-02-2014, 03:49 PM
Replies: 7,381
Views: 2,409,244
Posted By MPaulHolmes
I'm fairly certain the control board has been...

I'm fairly certain the control board has been tested a couple months ago. Well, I do know I tested Duncan's, and yours is identical. And since my soldering skills are crazy mad good, the...
Showing results 1 to 25 of 70
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