garygid
Well-known member
evnow,
Thanks, I updated my post.
By Monday I hope (no promise) to post my latest CAN-Do.
Thanks, I updated my post.
By Monday I hope (no promise) to post my latest CAN-Do.
Easy. Simple math. It can also do bargraphs, but I like the numeric readout.TonyWilliams said:How difficult would it be to take that % value readout and make a few columns that showed range at a few different parameters.mogur said:So, I want this to be my next Leaf construction project!
You certainly could, but I think what I'm looking for is different than most.For example, battery power level value divided by 2.16153846 equals "Best38mph" range. So, battery value 281 will display 130 miles.
Indeed. It has a dedicated wire for doing exactly this.garygid said:That is one of the questions that we want to answer, but I suspect that the to/from Carwings data only appears on the USB buss between the VCM and TCM.The charging station and RSS feed data seems to go over USB.
However, the TCU is on the EV BAT CAN Bus, which does wake up briefly during the status poll. I believe the TCU is getting it from this bus.
I believe that the TCM, receiving a call, can wake up the VCM with a special "ring, ring" line.
klapauzius said:I think these are the parts ( minus the software) needed for the Arduino based canbus-reader shown previvously
http://www.sparkfun.com/products/10039
http://www.sparkfun.com/products/9950
http://www.sparkfun.com/products/9393
http://www.sparkfun.com/products/10087
I am not sure about the cable, because it basically reads just one CAN bus and not three..
There is probably minimal soldering required with these parts (usually just the connectors between the shield and the arduino).
GroundLoop said:Imagine a real-time display of (wall) Watt-Hours Per Mile. This is definitive measure of how much energy you're expending to drive.......
My goal is to have an instant, 1-mile, and 5 or 10-minute average of Watt Hours per Mile, in addition to the remaining SOC and my own range calculation.
I can make a separate sub-forum for CAN and we can have new threads for the above topics, along with this thread. But splitting the posts in this thread into the new threads would be impractical.GroundLoop said:This thread is getting a bit long and windy.. I'd like to work with a mod to split it into separate topics, since it's likely to have long-term interest.
- CANBus interface hardware, DIY designs, kits, firmware
- EV-CAN CANBus message decoding (bus observations, bit analysis)
- Primary CANbus messages (the 6/14 pair)
- AV-CAN (likely to be a short thread!)
- PC Software projects to decode and display data
- Battery SOC behavior, as seen on the EV CAN bus
What would be useful for the rest of us is a part list and instructions on putting this together. We need more people to be doing this to get all the codes decoded quickly ...GroundLoop said:That said, I would not recommend the rig I built, so I'm hesitant to say "Go buy these parts! Build one!" It was a one-off experiment, but the overall package cost is a bit high. I think I have $130 or so in parts. Gary's AT90CAN128 Olimex board is a cheaper solution that doesn't use Arduino. Further up in this thread, the pros/cons of each configuration is discussed a bit more.
Done.garygid said:Yes, Please put this thread in a new CANBUS subforum.
Then I/we will branch out new threads from this point.
evnow said:What would be useful for the rest of us is a part list and instructions on putting this together. We need more people to be doing this to get all the codes decoded quickly ...GroundLoop said:That said, I would not recommend the rig I built, so I'm hesitant to say "Go buy these parts! Build one!" It was a one-off experiment, but the overall package cost is a bit high. I think I have $130 or so in parts. Gary's AT90CAN128 Olimex board is a cheaper solution that doesn't use Arduino. Further up in this thread, the pros/cons of each configuration is discussed a bit more.
Gary ?
Or Turbo can put together the parts, flash the uPs and sell us the whole thing. Fast.
mogur said:I'm ready to buy either way.
GroundLoop said:mogur said:I'm ready to buy either way.
I'll sell you my whole Arduino+CAN Shield+whatever kit, but I'm going over to AT90CAN128 so there's nothing other than an SOC meter for it.
The only downside is that I will miss the (2GB!) logging capacity and (maybe in the future) GPS.
But I do want to attach a 4-bit parallel LCD display and use the AVR native CAN rather than Microchip over SPI.
thimel said:Try to find the tire pressures. It would be very useful to have an accurate reading of these rather than only an idiot light when the pressure is 6 PSI low. I expect the pressures would be sent infrequently and only when the car is moving at speed. To be sure of the identification, you would have to change the tire pressure between trips.
mogur said:I like the AT90CAN128 concept personally... Perhaps we can put together a group buy for everything necessary to build one...
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