Search found 77 matches

by martinwinlow
Sun Mar 20, 2011 6:44 pm
Forum: BMS thread
Topic: Old BMS Software Thread
Replies: 600
Views: 323121

Re: Old BMS Software Thread

It's the middle 8 xx bytes you need to change ... Connect the sensors one at a time to the I2C sensor input ... "Yeah I know!..." but I can't understand which octet of code needs to replace what in what line of code... I can't even get it with hihosilver's help. I must be really dim. Can ...
by martinwinlow
Sun Mar 20, 2011 5:33 pm
Forum: BMS thread
Topic: Old BMS Software Thread
Replies: 600
Views: 323121

Re: Old BMS Software Thread

Hi Peter, I have finished testing the 3 x multi slave boards using my 4 x pairs of AA cells (as per pages 41 & 42) and found one or 2 glitches (inc a missed component) and then reprogrammed the Master and Watchdog with the latest code (V28 and V4_1 resp), installed the 1k resistor mod to the Mas...
by martinwinlow
Tue Feb 08, 2011 6:26 pm
Forum: BMS thread
Topic: Old BMS Software Thread
Replies: 600
Views: 323121

Re: Old BMS Software Thread

Hi peter, I just posted a connection diagram for my LEM Current Transducer HTFS 400-P/SP2 on the Hardware thread... can I confirm that to get it to read right (subject to a little tweaking maybe) the relevant line of code that needs changing in the subroutine calculatesoc is 'BatCurrent = ((Offset -...
by martinwinlow
Tue Feb 08, 2011 6:14 pm
Forum: BMS thread
Topic: Old BMS Hardware Thread
Replies: 613
Views: 335316

Re: Old BMS Hardware Thread

Hi Peter, Forgive me if this has been posted before but is this the right way to wire up my LEM current sensor...
by martinwinlow
Fri Feb 04, 2011 6:38 pm
Forum: BMS thread
Topic: Old BMS Software Thread
Replies: 600
Views: 323121

Re: Old BMS Software Thread

Peter, Looking at the schematic, it appears the Master Bus is in parallel and the Slave Bus is in series implying that if I moved the Slave bus connection temporarily to the first of the next 4 slaves on test that the system would recognize them and work correctly, yes? MW
by martinwinlow
Fri Feb 04, 2011 7:21 am
Forum: BMS thread
Topic: Old BMS Software Thread
Replies: 600
Views: 323121

Re: Old BMS Software Thread

I was thinking about the scenario when one or more cells are disconnected and what effective voltage the relevant slaves then see - can't quite get my head around it but I'll give it some thought. The other reason for asking was - for testing purposes, I'd like to use my 4 x 2xAA cells to test ALL t...
by martinwinlow
Thu Feb 03, 2011 9:11 pm
Forum: BMS thread
Topic: Old BMS Software Thread
Replies: 600
Views: 323121

Re: Old BMS Software Thread

Hi Peter, OK. Have re-progged all the slaves and have the system connected up to 4 x 2AA cells and all is nominal until I disconect a cell. If I disconnect the 1st cell nothing happens, if I disconnect the second or 3rd I get D6 (current limit/cont cutback) light up on the master PCB, if I disconnec...
by martinwinlow
Wed Feb 02, 2011 7:17 pm
Forum: BMS thread
Topic: Old BMS Software Thread
Replies: 600
Views: 323121

Re: Old BMS Software Thread

Peter, Have loaded up the hex file for the latest Master and left the slave and watchdog as is. The main program seems to be fine but I get a 'Offset 1020' on the splash screen on startup. My buttons work but have different button positions. I get a 'Cell 1 Error' no matter what. When I look at Cell...
by martinwinlow
Wed Feb 02, 2011 10:31 am
Forum: BMS thread
Topic: General questions about the BMS project here please.
Replies: 39
Views: 62368

Re: General questions about the BMS project here please.

P, On the I2C programming issue, I take it you are supposed to put them in one at a time for each reading not one first then then add the next in parallel? If you do the latter you still end up with 2 codes but one is different.... Am I right in thinking that my current Master version - PBP_MASTER_V...
by martinwinlow
Tue Feb 01, 2011 6:44 pm
Forum: BMS thread
Topic: Old BMS Software Thread
Replies: 600
Views: 323121

Re: Old BMS Software Thread

Hi Peter (and everyone else climbing on the band wagon), I have been busy with other things as well as boxing the Master PCB... I see things have moved on software wise and that the Master now only works with the new multi position switch setup. This is a bit of a blow as I have just finished making...

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