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Search took 0.02 seconds. Search: Posts Made By: Freyguy
Forum: Open ReVolt: open source DC motor controller 09-25-2012, 08:52 AM
Replies: 436
Views: 84,694
Posted By Freyguy
Error message is because your using an older...

Error message is because your using an older version of MPLAB. I switched to v8.83 back in April and it needs to see "PORTB" to compile. For older version, try "PORTBE". (see attachment)

Very nice...
Forum: Open ReVolt: open source DC motor controller 09-22-2012, 03:34 PM
Replies: 436
Views: 84,694
Posted By Freyguy
toledi, In 1.4 software, if you uncomment...

toledi,
In 1.4 software, if you uncomment (remove semicolons) from the battery amp section, it will use the hall scaler value for Lem Hass 300 (value=.29). I assume this is what you had done in the...
Forum: Open ReVolt: open source DC motor controller 11-21-2011, 12:29 PM
Replies: 436
Views: 84,694
Posted By Freyguy
Hi archieoz, I've moved on from this, but if...

Hi archieoz,
I've moved on from this, but if you pm me your email I'll send you the protel files.
Forum: Open ReVolt: open source DC motor controller 11-12-2011, 12:38 PM
Replies: 436
Views: 84,694
Posted By Freyguy
No, don't need vref output at all. It's 1/2 VCC...

No, don't need vref output at all. It's 1/2 VCC which I accomplish on the board with VR1 and two resistors.

Sorry about the bAmp_scale. I just went off memory since I didn't have my development...
Forum: Open ReVolt: open source DC motor controller 11-04-2011, 04:49 PM
Replies: 436
Views: 84,694
Posted By Freyguy
Mora, Yes, that would work. Since its max range...

Mora,
Yes, that would work. Since its max range is 750A vs 500A you’d need to set bAmp_scale to 24 to account for 1.5x decrease in sensitivity.
There are other options if you’d rather use a LEM. I...
Forum: Open ReVolt: open source DC motor controller 10-04-2011, 12:14 PM
Replies: 7,381
Views: 2,412,123
Posted By Freyguy
isaac_alaska, The actual part number should be...

isaac_alaska,
The actual part number should be MLX91205KDC-HB.
Both Digi-key and Future Electronics show stock.

Digi-Key - MLX91205KDC-HB-ND (Manufacturer - MLX91205KDC-HB)...
Forum: Open ReVolt: open source DC motor controller 09-22-2011, 01:52 PM
Replies: 13
Views: 3,615
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: Fossil Fuel Free 09-08-2011, 10:08 PM
Replies: 3
Views: 1,439
Posted By Freyguy
Bill, do you have the thermistor and throttle pot...

Bill, do you have the thermistor and throttle pot attached to your controller board? Not sure, but if these aren't attached then raw throttle count and heatsink temp may come up as zero. On a static...
Forum: Open ReVolt: open source DC motor controller 08-04-2011, 08:36 AM
Replies: 436
Views: 84,694
Posted By Freyguy
Thanks DJ. I really appreciate this. Particularly...

Thanks DJ. I really appreciate this. Particularly the cheap shots you took in your comments. I am a hardware guy with this representing only my second attempt at writing PIC code. I don't know C , am...
Forum: Open ReVolt: open source DC motor controller 08-02-2011, 08:08 AM
Replies: 436
Views: 84,694
Posted By Freyguy
Ian pretty much summed it up. Also, if you press...

Ian pretty much summed it up. Also, if you press SW2 AFTER power up it will toggle the green LED with each press.
Bill, are you sure you're setting bit 2 of Sysval? Try this-
Constant Sysval=...
Forum: Open ReVolt: open source DC motor controller 08-01-2011, 08:20 PM
Replies: 436
Views: 84,694
Posted By Freyguy
Charge mode will only register charge amps up to...

Charge mode will only register charge amps up to 29. Since you have no hall sensor plugged in the op amp output is railed and no amount of adjustment with VR1 will bring it back less than 29. As I...
Forum: Open ReVolt: open source DC motor controller 08-01-2011, 08:05 AM
Replies: 436
Views: 84,694
Posted By Freyguy
OK, so you are getting the charge mode screen....

OK, so you are getting the charge mode screen. Normal operation is that it will start with the volt/amp screen, then if it sees a negative bAmp over 3 amps, it will enter charge mode screen. If you...
Forum: Open ReVolt: open source DC motor controller 07-31-2011, 10:48 AM
Replies: 436
Views: 84,694
Posted By Freyguy
Hi Bill. The green led should only be flashing if...

Hi Bill. The green led should only be flashing if you are in charge mode. Since you don't mention that screen, the only thing left is a compiling/programming problem. I assume you are using the file...
Forum: Open ReVolt: open source DC motor controller 07-11-2011, 08:31 AM
Replies: 436
Views: 84,694
Posted By Freyguy
Version 1.4 release

OK guys, version 1.4 is ready for release. Fixes/additions in this revision:
- write capacity to EEPROM immediately after SOC reset
- skip capacity write to EEPROM if battery amps less than 2...
Forum: Open ReVolt: open source DC motor controller 06-05-2011, 08:14 PM
Replies: 436
Views: 84,694
Posted By Freyguy
Mora, Use value of R20 or PWM_Max to set fuel...

Mora,
Use value of R20 or PWM_Max to set fuel gauge needle to full when SOC=100%. For SOC values under 100%, the position of VR2 comes into play. At 20%VR2 has most significant impact and is used to...
Forum: Open ReVolt: open source DC motor controller 05-23-2011, 03:37 PM
Replies: 436
Views: 84,694
Posted By Freyguy
Hey Alvin, thats funny. I just found that bug...

Hey Alvin, thats funny. I just found that bug yesterday and didn't get to post it. Basically, when you reset SOC, it will update the capacity in ram immediately, but still relies on the 1 minute...
Forum: Open ReVolt: open source DC motor controller 05-05-2011, 12:25 PM
Replies: 436
Views: 84,694
Posted By Freyguy
Sorry to say the pinout is different. While the...

Sorry to say the pinout is different. While the pin assignments are the same, the physical location of those pins on the board are in a different order.
(see attached)

The eio display goes pin...
Forum: Open ReVolt: open source DC motor controller 05-04-2011, 12:26 PM
Replies: 436
Views: 84,694
Posted By Freyguy
Yes, from the datasheet you can see the LEM Hass...

Yes, from the datasheet you can see the LEM Hass 300 up through 600 have a measurement range to 900A. Each model differs only in their sensitivity.
The 300= 2.08mV/A, 400=1.56mV/A, etc. The Tamura...
Forum: Open ReVolt: open source DC motor controller 05-03-2011, 10:01 PM
Replies: 436
Views: 84,694
Posted By Freyguy
Hall sensor alternative to Tamura

Since it appears that getting the Tamura 400A sensor is almost impossible, I wanted to let everyone know that the LEM Hass 300-S can also be used. Starting with version 1.3 I placed the mod used by...
Forum: Open ReVolt: open source DC motor controller 05-03-2011, 10:06 AM
Replies: 436
Views: 84,694
Posted By Freyguy
Updated firmware version 1.3

Sorry for the delay, but have been busy and the display refresh change turned into a real chore. Turns out my ADC rolling average of 16 (for analog filtering) relies on the time of the display...
Forum: Open ReVolt: open source DC motor controller 05-01-2011, 09:43 AM
Replies: 436
Views: 84,694
Posted By Freyguy
Thanks Paul! Hey, don't think all the EV's...

Thanks Paul!
Hey, don't think all the EV's there were that polished. Nevyn posted the "eye-catchers". There were a few there where the layouts weren't that clean.
But the bottom line is that all of...
Forum: Open ReVolt: open source DC motor controller 04-30-2011, 09:17 PM
Replies: 436
Views: 84,694
Posted By Freyguy
Hey everyone, got back from the EV-ent in...

Hey everyone, got back from the EV-ent in Macungie and it was bigger and better than ever! I was about to upload pictures but found this thread by Nevyn who pretty much got all the same shots I did-...
Forum: Open ReVolt: open source DC motor controller 04-27-2011, 08:12 PM
Replies: 436
Views: 84,694
Posted By Freyguy
Your welcome:) The display refresh option was...

Your welcome:)
The display refresh option was probably a good thing to add due to everyone's taste when it comes to digital displays. I had regular panel meters installed earlier and I felt their...
Forum: Open ReVolt: open source DC motor controller 04-27-2011, 12:41 PM
Replies: 436
Views: 84,694
Posted By Freyguy
Youri, I figured I'd take a quick look and see...

Youri,
I figured I'd take a quick look and see how involved the display refresh delay would be, and it's really very simple. Added 5 lines of code and a refresh rate constant you need to specify....
Forum: Open ReVolt: open source DC motor controller 04-27-2011, 09:08 AM
Replies: 436
Views: 84,694
Posted By Freyguy
Youri, The alternate part you show is 5mm...

Youri,
The alternate part you show is 5mm spacing vs 2.5mm. Instead use 140-50N2-180J-TB-RC. It's the same as original but will be on a paper strip (ammo pack).

For 863-NTD4858N-1G use...
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