Search found 89 matches

by steiner
Sun Jun 28, 2009 6:44 pm
Forum: BMS thread
Topic: Old BMS Software Thread
Replies: 600
Views: 359328

Thanks for the information. I had already caught a few of the lines that were remed out. I had set the number of slaves to 2 (that is all that I built right not). I am using 90 Ahr Thundersky batteries. I changed the code to allow 650 Ahr cells max. I am using a simple 16x2 LCD display for now. I pl...
by steiner
Sun Jun 28, 2009 5:50 pm
Forum: BMS thread
Topic: Old BMS Software Thread
Replies: 600
Views: 359328

For now I am just going to rem out the watchdog portion of the code. I had already verified the 10k and 22k resistors. I will see if it will work with one of the two known working chips in the slaves. If not, I will try your power-up trick. I am about to power everything up and wanted to make certai...
by steiner
Sat Jun 27, 2009 11:45 pm
Forum: BMS thread
Topic: Old BMS Software Thread
Replies: 600
Views: 359328

Peter, For some reason I am having trouble programming the watchdog IC. I have successfully programmed two of the slaves and the master but all I get is "Hardware not found on Com1" when I try to program the watchdog. I have verified I am getting 5 volts between pins 1 and 8 on the watchdo...
by steiner
Thu Jun 25, 2009 2:36 am
Forum: BMS thread
Topic: Old BMS Hardware Thread
Replies: 613
Views: 372402

Peter, I am going to show my ignorance here..... The chips that you sent are Microchip PIC chips. I was under the assumption that Picaxe chips were different from Micrchip chips. Are they the same chips but just use different software? The reason this doesn't make any sense to me is the Micochip PIC...
by steiner
Mon Jun 22, 2009 4:12 am
Forum: BMS thread
Topic: Old BMS Hardware Thread
Replies: 613
Views: 372402

Peter, I have been looking at some displays similar to the one that you are using. I noticed that yours seems to have a resolution of 640x480 (standard RGB). The more common displays I have found here in have a resolution of 480 x 234. Do you think this will make much of a difference or should I kee...
by steiner
Sat Jun 20, 2009 12:00 am
Forum: BMS thread
Topic: Old BMS Software Thread
Replies: 600
Views: 359328

Peter, I have been looking at your code for the Master and had a question. In the "check cells" routine you have these two lines of code: PackVoltage = PackVoltage / 100 ;Get first part of decimal value (Before decimal point) poke PackV, WORD PackVoltage ;Store Pack Voltage in PackV Ram Wo...
by steiner
Wed Jun 10, 2009 12:58 pm
Forum: BMS thread
Topic: Old BMS General Thread
Replies: 658
Views: 508939

Peter,

Sorry to hear about the delay. I am very interested in your new approach. If there is anything I can do to help, please let me know. I would be more than happy to put a second set of eyes on the layout.

Rick
by steiner
Sun Jun 07, 2009 9:31 pm
Forum: BMS thread
Topic: Old BMS General Thread
Replies: 658
Views: 508939

Greg, I am currently using an analog board that I built myself for balancing my cells. It bypasses about 1.2 amps. I have 90Ahr Thundersky batteries. There have been a few times that I wish it had more bypass to keep an individual cell from going to high. My basic problem is that I don't have contro...
by steiner
Sun Jun 07, 2009 4:41 pm
Forum: BMS thread
Topic: Old BMS General Thread
Replies: 658
Views: 508939

Peter, Great work.... I am very interested in your new approach to putting all of the slaves on one board so they can be mounted away from the EMI source. I noticed a few pages ago you all were discussing putting fuses on the sense leads. I highly recommend this as a good friend of mine had a fire o...

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