Tom, For CAN logging, I use this: http://www.can232.com/?page_id=16 But, it is 10 times the price of a cheap ELM327-clone logger. I've heard of mixed success with the ELM327 loggers and Monitor All (MA) mode. Some work, other don't. The good quality ones use original ELM327 (or the better SN1110) chipset, but the cheaper ones use clone chipsets. For the OBDII Y cable, the China guys who make OVMS cables sell some really nice Y cables using the right-angle connectors, but their MOQ is 50 units! In the end, I ended up using this: http://www.amazon.com/gp/product/B000TMCX72/ref=oh_details_o08_s00_i00?ie=UT... and it works fine - just hate the straight-in connectors (good enough for logging, but no good for a permanent install). I see that Amazon now has another one which they didn't have when I got mine (http://www.amazon.com/Right-Angle-Splitter-Cable-Female/dp/B00EEDOWU8/ref=sr...) - cable arrangement seems better, but no idea about quality. Regards, Mark. On 4 Feb, 2014, at 6:53 am, Tom Saxton <tom@idleloop.com> wrote:

I've got a line on a scan gauge for a Ford Focus Electric and a vehicle I can plug it into. I should be able to read some interesting values: SOC as XY.Z%, energy to empty (kWh), battery average volts, battery average temperature, accessory battery volts, odometer, average battery charger input power (kW), charge time remaining.

I'd like to capture the CAN traffic while reading the values for analysis later. What's the cheapest way to get data out of the CAN bus? Would this work?

http://www.amazon.com/gp/product/B005FEGP7I/ref=ox_sc_sfl_title_1?ie=UTF8&p sc=1

Any suggestions on where to source an OBDII Y cable?

Tom

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On Feb 3, 2014, at 14:53, Tom Saxton wrote:

I'd like to capture the CAN traffic while reading the values for analysis later. What's the cheapest way to get data out of the CAN bus?

I purchased the OVMS (v2) with the intent of writing custom firmware that would log CAN traffic. I assumed that I'd need compression, pattern-matching to log only a subset of the data, or some other port to which I could stream the data (DIAG or USB). However, I never did get around to writing any new firmware. I know the memory is limited, but I hold on to some hope that intelligent filtering, or even just a histogram, could provide useful data. In fact, perhaps an initial phase of gathering histogram data, followed by targeted logging, would prove useful - assuming easier options aren't already available. Has anyone worked on custom OVMS v2 firmware for something like this? I'm looking forward to the OVMS CAN-USB, but I suppose that won't arrive soon enough for your project, Tom. Brian