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Unread 06-01-2011, 02:11 PM   #11
Gone Wild
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Default Re: PakTrakr battery monitor

I have a 2 channel 16 bit differential input tc3401 which has +- for both channels
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Unread 06-01-2011, 03:21 PM   #12
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Default Re: PakTrakr battery monitor

hmm, that looks like a nice lil chip! i guess you would need 3 of them?? hook it up to batteries and see if it lets the smoke out!

i have a mcp3002 here i was planning on trying as a SOC ADC. i got it because of the differential inputs. i've been using atmel µCs w/o lower vref setting capability and have had a difficult time configuring/tuning a rail to rail opamp for differential inputs. if i would just switch to PIC i wouldn't have this problem as the lower vref can be set in software.

that 16bit delta-sigma would also solve my lower vref dilemma; just throw more bits at the problem!
-sj
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Unread 06-01-2011, 04:17 PM   #13
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Default Re: PakTrakr battery monitor

Yea you can always through more bits at it but then you have to do the math !!!

I am currently reading the voltage out of my carts curtis controller what could be better than that. using the programming port!!
next step is sensor data, motor current on and on.
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Unread 06-01-2011, 04:41 PM   #14
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Default Re: PakTrakr battery monitor

reworking the math is a lot easier than tuning analog!

thats cool! does the curtis output current as well? can you keep the connection alive while operating the controller? are you parsing the data to a laptop? lcd? 7 seg? a in-dash on-the-fly programmer/monitor would be sweet!
-sj
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Unread 06-01-2011, 05:09 PM   #15
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Default Re: PakTrakr battery monitor

Okay slow down big boy!!! I haven't gotten that far yet! but my answer is yes . at this time I'm using a basic stamp for prototype then I will port it to a pic chip using a 2 or 4 line lcd if I really want to get fancy I will use a graphic lcd.
I haven't had a lot of time to work on it the last week for some reason the wife wants her 30,000 dollar car in the garage and not my cart well I guess you see who wears the pants in my family.
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Unread 06-01-2011, 05:49 PM   #16
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Default Re: PakTrakr battery monitor

Quote:
Originally Posted by gaminde View Post
I have a 2 channel 16 bit differential input tc3401 which has +- for both channels
Dude, you should see a doctor for that. Maybe some salve or something.....




LOL!
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Unread 06-01-2011, 05:55 PM   #17
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Default Re: PakTrakr battery monitor

don't be making fun of my illness Im doing the best I can
one thing for sure I don't drive an EZGO

Now that there is funny
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Unread 06-01-2011, 05:57 PM   #18
Stay thirsty my friends!
 
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Default Re: PakTrakr battery monitor

It's all good. Just havin' some fun!
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Unread 06-01-2011, 06:01 PM   #19
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Default Re: PakTrakr battery monitor

Im good !! I was laughing out loud, you couldn't here me in Chicago, what too windy

larry
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Unread 06-01-2011, 06:34 PM   #20
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Default Re: PakTrakr battery monitor

Dayum,
I thought I was on the wrong forum for a minute until Gorno showed up!
I gotta go take an asprin.............
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