Data Logging

I'm looking for someone the really knows computer language. I'm trying to get an 8 EGT CAN to BUS to talk to an AEM AQ1 Data Logger.

I know there is a protocol for each CAN/BUS and my 8 EGT to CAN device will match that.

I guess it comes down to frames inside the AEM AQ1 Data Logger, in order for the device to communicate it needs a frame to recognize the data sent over the CAN/BUS.

What really sucks is all the digital dashes will recognize this device.

HELP PLEASE!!!!

I hope this helps and I feel it is worth consideration so I will TRY to communicate what I don't fully understand so it will be in layperson terms and with small words (that's all I have)...A guy here thinks you may be looking for 'proprietary code' as a fix but you may actually need HARDWARE to resolve the issue...e.g.- CAN/BUS needs a termination loop with an 'engineered' resistance whereas the dashes you mention typically are ONE END. Now the question is; is there an alternative loop end?

I don't have a clue as to what you need to do, but have you talked to the vendors?

If so what have they told you?

Good Luck!

AEM said they would have to build a frame in the software to see the device, they called me back and said they were not going to do that because it was not their device.

Problem is AEM doesn't have an 8 EGT to CAN, if they built the frame in the software I would be home free. They have what they call AEMnet that can see gauges.

Anybody know if there is a small logger that could capture this data on a USB. The 8 EGT to CAN also has a USB port that ECU Master said could go live to a laptop.

I got an email several weeks ago from DIYAutoTune that said my Droid phone could be hooked to the EGTCAN with a USB-OTG cord. I am not far enough along on this build to try it yet.

I have an Iphone but I did think about that.

I don't know anything about these devices (AEM whatever + EGT/CAN thingy) but I can tell you that a CAN bus is very similar to a home computer (TCP/IP) network. Anything that has a hardware interface compatible with a CAN bus can communicate (send and receive) any message (data, control, status, etc) over a connected (and active) CAN bus. Think of your home router being the CAN bus. Anything that has a RJ45 network jack can plug into that connected and powered up (active) router and send/receive messages to any other device connected to the same router.

The average vehicle these days has at least 15-20 CAN devices for the simplest of vehicles. Lots of times there are even several CAN busses full of devices also.

That being said if your AEM or EGT devices do truly have a CAN bus interface then they can communicate on said bus. Now comes the software part. If AEM or EGTthingy writes their software to be able to send ONLY a specific type of data frame and/or receive ONLY a specific (or set of specific) frame types then there will be a limited amount of functionality available. There may be many frames passing by that CAN bus with valuable info but the AEM or EGTthingy software talking over that hardware CAN interface only knows how to decode or decipher the ones their company decided to implement.

BTW CAN bus communication isn't trivial from a software perspective. CAN bus hardware is a dime a dozen.

HTH

That is good info

I'm looking for the guy that says I can build a frame in the software to be able to log the EGT's from the ECUMaster 8 EGT to CAN module to the AEM AQ1 data logger through the CAN/BUS connection.

I looked up the hardware and specs of the two devices. Both can talk CAN but the AEM claims to only support their AEMnet devices over the CAN bus. Since they also make a EGT sensor I suspect they are only interested in supporting theirs. It even states this in the pdf install guide.

The good news is that the EGT to CAN module says it has configurable message id capability. With this you may be able to use one of the AEMnet message id's. The one for their EGT sensor would be best I suspect. You will have to find a way to get the correct message id to duplicate but there may be a chance it would work.

Second thought it probably wouldn't work with all 8 EGT's since the AEMnet one is only providing one temp. Need to snoop the bus and see what it coming out of the EGT to CAN module.