Search found 19 matches

by jackbauer
Sun Jan 30, 2011 2:29 pm
Forum: BMS thread
Topic: General questions about the BMS project here please.
Replies: 39
Views: 132876

Re: General questions about the BMS project here please.

Yep i'm modding the code for my setup regards current sensor etc. Regards the timing loop , if i remember correctly (been a while!) the pic keeps count of clock cycles used for any given program , branch or loop. So could we not just count the cycles used , hence time and use that for SOC? I'll look...
by jackbauer
Sun Jan 30, 2011 1:33 pm
Forum: BMS thread
Topic: General questions about the BMS project here please.
Replies: 39
Views: 132876

Re: General questions about the BMS project here please.

Yeh i'm getting there. Stuggling a bit with the speed sensor input and calcs today!
by jackbauer
Fri Jan 28, 2011 7:30 pm
Forum: BMS thread
Topic: General questions about the BMS project here please.
Replies: 39
Views: 132876

Re: General questions about the BMS project here please.

Thanks a lot. Its up an running. Bit the bullet and lashed pbpro on the credit card :). I figure its a good investment as i'll need to make changes to the current sensor code soon (going to use a lem hass 300-s). Can't be annoying you guys everytime i need a code change :)
by jackbauer
Thu Jan 27, 2011 8:54 pm
Forum: BMS thread
Topic: Building a cheaper charger
Replies: 8
Views: 41319

Re: Building a cheaper charger

I built this charger over a year ago using mostly parts rescued from a scrap plasma cutter. Still going strong and hold voltage very well:
http://www.youtube.com/watch?v=LLa7hYbOEhE
by jackbauer
Thu Jan 27, 2011 8:49 pm
Forum: BMS thread
Topic: General questions about the BMS project here please.
Replies: 39
Views: 132876

Re: General questions about the BMS project here please.

Ok i have 2 serial codes from the sensors:

sensor 1 : 28F6877E020000B6

sensor 2 : 28F6C57E020000DC

From what i can see pic basic pro costs $250. Not an option for me right now. Could i impose upon your good self to recompile the master code with these ids? Sorry for being a pain!
by jackbauer
Thu Jan 27, 2011 5:13 pm
Forum: BMS thread
Topic: General questions about the BMS project here please.
Replies: 39
Views: 132876

Re: General questions about the BMS project here please.

Up and running now with 8 slaves. Looks like the problem was with running one on its own. Now to get that I2C temp sensor working ......... :mrgreen:
by jackbauer
Thu Jan 27, 2011 7:01 am
Forum: BMS thread
Topic: General questions about the BMS project here please.
Replies: 39
Views: 132876

Re: General questions about the BMS project here please.

Does the report slave version command work? Yes Is the master set to the correct number of slaves? Yes Have you checked your boards against my high res photos posted on the other threads? Yes Does the display cell voltage option work on Master? No Try using the latest version of the master code post...
by jackbauer
Wed Jan 26, 2011 9:47 pm
Forum: BMS thread
Topic: General questions about the BMS project here please.
Replies: 39
Views: 132876

Re: General questions about the BMS project here please.

ok , by removing c7 and c9 i have all commands working except command 1. This still returns an error. I also removed vr5 and i can now read the id from the ds1820. Screen is still flashing up bms error on powerup. I have tried 1k and 330r in r8. same results.
by jackbauer
Wed Jan 26, 2011 8:53 pm
Forum: BMS thread
Topic: General questions about the BMS project here please.
Replies: 39
Views: 132876

Re: General questions about the BMS project here please.

Hi all, Thanks to the generosity of Greg and Peter for supplying the pcbs i'm in the process of building the bms for my 48s4p pack of headway 16ah cells. I am currently experiencing a problem with getting the master to talk to 1 slave channel of a 16 cell multi board. I can send commands to the slav...

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