DIYEFI.org Forum

1: Eagle is very nice for the wide variety of libraries available and the ease of use, but is crippleware in that you have to pay to design boards beyond certain limitations. Kicad is an open source alternative, but is a bit harder to use and the library setup on windows is not as intuitive or well ...

Be aware of the cost of the eTPU compiler though. The eTPU is a fairly amazing piece of hardware, and there have been ECU projects based on it before, but few hobbiests are willing to shell out the $5k to write code for it. They have some binary blobs for standard crank/cam configurations to run in ...

I have some idea. Why would the output swing back and forth... rich and lean... if the AFR is constant?? AFR isn't constant. Narrow band sensors are very narrow band in the electronic sense of the term. They tell you if you're rich or if you're lean. Think a ball balanced on a knife, it'll fall one...

What are your thoughts on "tuning devices" that use a narrow band sensor?. Can a NB be "offset" to measure between, say, 12.0:1 and 13.0:1 ?? Nope. They're pretty much only useful for an ECU (typically stock, aftermarket closed loop use should WB anyway) to maintain a stoich AFR...

Negative: http://en.wikipedia.org/wiki/Oxygen_sen ... _the_probe

flat4power Check out the docs Fred sent to you related to the comms protocol, it'l give you a base idea how to implement it. If you wish to use the FreeEMS plugin for communications, there are certain message EMS Tune expects to receive responses to, I'll see if I can get a quick list of them togeth...

Hi! As far as I know, Jaguar is considered the most up to date, and is certainly the most tested design out there at the moment. You are probably best off basing your design off of that. You will also be limited to batch fire fuel injection with wasted spark ignition, as there are only 6 timer chann...

Something else to try if it always looks like something is using the port, uninstall modemmanager (on ubuntu: apt-get remove modemmanager), as it often ties up USB serial ports.

It looks like you've selected megasquirt as your ECU in megatunix. Select FreeEMS and try it again?

EMStudio will not read all green unless it is good, so I'd say the firmware loading process succeeded, but MTX cannot talk to FreeEMS in megasquirt mode

jenylaloka: I've discontinued this project, and now use a Jaguar board