JeremyW
Well-known member
Sweet! It's better that it's the Nav time anyway, that's GPS based right?
That is my guess since it doesn't give you a "set" option, but rather, just the option to offset the time. Subtle difference but implies it is getting an accurate time from somewhere instead of generating it. I have added this to CANary and it seems to be working quite well to keep the clock synchronized. Now I need to figure out how to program the eyebrow clock via canbus so I can keep that one synchronized, too.JeremyW said:Sweet! It's better that it's the Nav time anyway, that's GPS based right?
It is a computed value. Once a second, I algorithmically find the value of Resr that minimizes the variation in the formula Vbat+Resr*Ibat. Once I gather enough data to show a trend, I hope to look for a message that tracks it. However, my Leaf really doesn't seem to be changing much - hovers around 100mOhms.garygid said:Where did you find the battery series resistance, please?
(Moving from the other thread)garygid said:Accessing the spreadsheet link from my Android Tablet,TickTock said:Take a look at https://docs.google.com/spreadsheet/ccc?key=0An7gtcYL2Oy0dGRaSWl6VTV2eXBQMy1ON2xZSzlMUXc#gid=5 (be sure to note the different tabs at the bottom). It contains everything I could find that has been unearthed on the various canbus messages. The content came from the contributions of Turbo2ltr, garygid, and many others. If you discover anything useful (or not ) please let us know!
I get what appears to be an endless loop (not tested
to the end).
Have you noted the increased impedance at cooler temps? The LeafDD also records series resistance calculated at high current points and logs the SOC and temperature at the time the test is done. When we had a few cool days recently and the battery temps dropped from 27-33 down to 18-20 I also saw the impedance rise from 88-90mOhm to 100. Not a surprise I guess, but this is the first time I'd seen it numerically.TickTock said:It is a computed value. Once a second, I algorithmically find the value of Resr that minimizes the variation in the formula Vbat+Resr*Ibat. Once I gather enough data to show a trend, I hope to look for a message that tracks it. However, my Leaf really doesn't seem to be changing much - hovers around 100mOhms.garygid said:Where did you find the battery series resistance, please?
Yeah, that does appear to be the case. I was reading between 89-99mOhm in the summer and now am seeing 102-111. However, I had a formatting bug in my tripLog so I only have a few datapoints (that I manually captured). I was rounding to the nearest tenth so all my tripLog entries read 0.1 :-/GregH said:Have you noted the increased impedance at cooler temps? The LeafDD also records series resistance calculated at high current points and logs the SOC and temperature at the time the test is done. When we had a few cool days recently and the battery temps dropped from 27-33 down to 18-20 I also saw the impedance rise from 88-90mOhm to 100. Not a surprise I guess, but this is the first time I'd seen it numerically.TickTock said:It is a computed value. Once a second, I algorithmically find the value of Resr that minimizes the variation in the formula Vbat+Resr*Ibat. Once I gather enough data to show a trend, I hope to look for a message that tracks it. However, my Leaf really doesn't seem to be changing much - hovers around 100mOhms.garygid said:Where did you find the battery series resistance, please?
That's what I've been seeing too.TickTock said:I was reading between 89-99mOhm in the summer and now am seeing 102-111. However, I had a formatting bug in my tripLog so I only have a few datapoints (that I manually captured). I was rounding to the nearest tenth so all my tripLog entries read 0.1 :-/
Enter your email address to join: