DIYEFI.org, FreeEMS and the future of TRUE DIY engine management
10-06-2008, 06:03 PM
#31
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Join Date: Jul 2007
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Re: DIYEFI.org, FreeEMS and the future of TRUE DIY engine management
Originally Posted by jay
i want a missus 
Fred.
10-27-2008, 08:15 PM
#32
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Join Date: Jul 2007
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Re: DIYEFI.org, FreeEMS and the future of TRUE DIY engine management
It's now got packetised checksummed header filled two way comms.
I send a start header body checksum stop and escape any starts stops and escapes in the middle and it gets received checksummed processed and actioned.
pretty cool, but not finished just yet.
its possible to make it reset via the pc which is a nice thing MS can't do. (you woudn't want ms trying this either as its data is raw and unchecked....
the flash burning stuff isn't qutie right though, it erases the wrong block and never writes anything. The guy that wrote it is working on it right now.
If any of you have 125 us spare and a jimstim, pretty soon there will be a genuine use for you bench testing a gui app and the serial interface and math code etc etc.
Fred.
I send a start header body checksum stop and escape any starts stops and escapes in the middle and it gets received checksummed processed and actioned.
pretty cool, but not finished just yet.
its possible to make it reset via the pc which is a nice thing MS can't do. (you woudn't want ms trying this either as its data is raw and unchecked....
the flash burning stuff isn't qutie right though, it erases the wrong block and never writes anything. The guy that wrote it is working on it right now.
If any of you have 125 us spare and a jimstim, pretty soon there will be a genuine use for you bench testing a gui app and the serial interface and math code etc etc.
Fred.
11-16-2008, 03:26 PM
#33
1.5 BAR
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Join Date: Jul 2007
Posts: 752
Re: DIYEFI.org, FreeEMS and the future of TRUE DIY engine management
Last week I put out 0.0.17-SpudEchoes With two way checksummed packetised headered IDed data and a matching really really simple gui called FreeEMS-Tuner.
It can do basic stuff like send back it's own name and version etc. It could also return blocks of memory, ve tables etc, thermistor lookups etc, and blocks of setting data.
In the unreleased code it can receive data too and thus it is now tunable :-)
It needs more work, but it's getting pretty close to being useful.
I reckon in a few weeks the gui and firmware will talk to each other in more detail and it will be tunable.
Why spud echoes?
spud because the source in that release is half baked... and echoes because it can echo data back and forth on command, and also because I listened to pink floyd echoes about 50 times while developing it.
I'll give you a screen shot of the big red button because that is fairly cool in a childish sort of way :
One guy in Wellington NZ and one in South Carolina are working on that, and I'm working on trying to make the EMS side of the comms deal ROCK solid. Currently it's pretty good, but I'm not done yet!
I hope to finalise more of the comms stuff and do another release in a few weeks or less such that those guys can focus on making a nice GUI for it while I work on the guts that will actually run the engine. Mean while the hardware guys will be working on their share, and hopefully we'll all come to a climax at exactly the same time producing a wonderful system that actually works TM :-)
Fred.
It can do basic stuff like send back it's own name and version etc. It could also return blocks of memory, ve tables etc, thermistor lookups etc, and blocks of setting data.
In the unreleased code it can receive data too and thus it is now tunable :-)
It needs more work, but it's getting pretty close to being useful.
I reckon in a few weeks the gui and firmware will talk to each other in more detail and it will be tunable.
Why spud echoes?
spud because the source in that release is half baked... and echoes because it can echo data back and forth on command, and also because I listened to pink floyd echoes about 50 times while developing it.
I'll give you a screen shot of the big red button because that is fairly cool in a childish sort of way :
One guy in Wellington NZ and one in South Carolina are working on that, and I'm working on trying to make the EMS side of the comms deal ROCK solid. Currently it's pretty good, but I'm not done yet!
I hope to finalise more of the comms stuff and do another release in a few weeks or less such that those guys can focus on making a nice GUI for it while I work on the guts that will actually run the engine. Mean while the hardware guys will be working on their share, and hopefully we'll all come to a climax at exactly the same time producing a wonderful system that actually works TM :-)
Fred.
11-18-2008, 12:10 AM
#34
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Join Date: Feb 2003
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Re: DIYEFI.org, FreeEMS and the future of TRUE DIY engine management
Originally Posted by fe3tcourier
standalones have their advantages even on a honda where much free stuff is already available.
Also, I'm sticky-ing your thread, you insufferable -------. :P
11-18-2008, 12:14 AM
#35
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Re: DIYEFI.org, FreeEMS and the future of TRUE DIY engine management
11-18-2008, 12:16 AM
#36
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Join Date: Feb 2003
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Re: DIYEFI.org, FreeEMS and the future of TRUE DIY engine management
Record's over a grand to the wheels with the distributor architecture. Also, most affordable OEM COPs are weaker than an MSD blaster coil :1
How about a valid advantage?
How about a valid advantage?
11-18-2008, 12:24 AM
#38
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Join Date: Feb 2003
Posts: 0
Re: DIYEFI.org, FreeEMS and the future of TRUE DIY engine management
Yeah, trigger off the crank while the valve event varies *****-nilly. Either way is equally flawed, to the point it's moot.
How about we let Fred answer my question? Not to be a dick but he's the one making the claim, as well as the one who's been thinking about it all of the time.
How about we let Fred answer my question? Not to be a dick but he's the one making the claim, as well as the one who's been thinking about it all of the time.
I will step out as I am not really a skilled tuner, just thought I would throw that out.
11-18-2008, 07:00 PM
#40
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Join Date: Jul 2007
Posts: 752
Re: DIYEFI.org, FreeEMS and the future of TRUE DIY engine management
I'm not a skilled tuner either, just a skilled software developer.
Modern coils mean the dizzy disadvantage is not so bad anymore, but you couldn't pull off much power without CDI on a 6 pot. If your examples are using CDI then its cheating really and not really a dizzy anymore.
The crank argument is a valid one, but I did some math to prove someone wrong and proved myself wrong, that doesn't matter much either, esp not at high revs.
What I was referring to was the IO capabilities. Your honda ECU may be fantastic, but what happens when you want to datalog a dozen more temps and control 20 more solenoids etc? You are SOL. That's all I meant really.
I'm sure there are other reasons though.
At the end of the day it depends what you want to do, horses for courses etc. I quite like the build it yourself thing. That alone is a good reason for me.
Thanks for the sticky status :-)
New eye candy :
Now it's comprehensible too :-)
He's like me, working on it daily heaps! Will be useful in no time :-)
Modern coils mean the dizzy disadvantage is not so bad anymore, but you couldn't pull off much power without CDI on a 6 pot. If your examples are using CDI then its cheating really and not really a dizzy anymore.
The crank argument is a valid one, but I did some math to prove someone wrong and proved myself wrong, that doesn't matter much either, esp not at high revs.
What I was referring to was the IO capabilities. Your honda ECU may be fantastic, but what happens when you want to datalog a dozen more temps and control 20 more solenoids etc? You are SOL. That's all I meant really.
I'm sure there are other reasons though.
At the end of the day it depends what you want to do, horses for courses etc. I quite like the build it yourself thing. That alone is a good reason for me.
Thanks for the sticky status :-)
New eye candy :
Now it's comprehensible too :-)
He's like me, working on it daily heaps! Will be useful in no time :-)
