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Looking fantastic! Do you think you could add a potentiometer to make an electronic dial-a-boost, or is each boost level too unique to extrapolate like that? What's your plan for the final circuit? I've been brushing up on Eagle to make a PCB for another arduino project, so might have some Eagle parts that would help. I just learned that batchpcb is now changed and part of www.oshpark.com, which I plan to give a try shortly...
Looking fantastic! Do you think you could add a potentiometer to make an electronic dial-a-boost, or is each boost level too unique to extrapolate like that? What's your plan for the final circuit? I've been brushing up on Eagle to make a PCB for another arduino project, so might have some Eagle parts that would help. I just learned that batchpcb is now changed and part of www.oshpark.com, which I plan to give a try shortly...
Thanks Tom. Plan is to make the settings adjustable via button control and stored in the eprom. Four different programmable maps will be available. Final circuit will be on a dedicated PCB. I have been messing with Sunstone PCB123.
As of today, I now have rpm added to the maps (thanks to help from a friend) This weekend I am going to make the EBC TPS aware. Want to add boost after peak torque in any gear? No problem Here is the first cut of the map I put together for the strip:
The EBC project is making nice progress. In addition to TPS boost scaling, a Arduino based knock counter is being added along with built in knock boost protection.
Incredible work Shawn, this is likely the most important new feature for our cars since the stand alone. Not only our cars, for any high HP turbo car with traction issues. This is going to have massive appeal. You are on to a major breakthrough here!
Just got in the gauge panel for the EBC from Front Panel Express. Pretty happy with the look. The Adafruit LCD Shield (with longer tactile button switches) mounts nicely in the panel. This will allow very quick changes between boost maps.
Also, as you can see in the photo, I have some pretty serious help on the project. Joshua took my feeble code and has transformed it into something amazing. The EBC is going to be pretty special Still much to do but we are making progress...
This is really awesome. I've messed with microcontrollers in the past and have been planning to play with Arduinos. I'd be glad to ditch my Profec for one of these since I now have a traction problem in 1'st and 2nd gears at times. Maybe there could be a marriage with PLX in the future for display..
Looks great. If you drag it with a breadboard on the passenger seat, a video or two is a must....
Breadboard is definitely along for the ride Should have some video.
Originally Posted by gruhsy
When will it be ready for market?
We are about half way done, still a lot to do...maybe the Spring...
Originally Posted by kevincnc
This is really awesome. I've messed with microcontrollers in the past and have been planning to play with Arduinos. I'd be glad to ditch my Profec for one of these since I now have a traction problem in 1'st and 2nd gears at times. Maybe there could be a marriage with PLX in the future for display..
How are you scaling boost based upon TPS? I think TPS-velocity should be part of the algorithm. Let's say you have baseline TPS-scaling:
TPS___scale % of map
20%__0%
50%__25%
75%__70%
100%_100%
Now let's say TPS-position is changing at +X rate:
TPS___scale % of map
20%__0%
50%__50%
75%__75%
100%_100%
In effect, you're emulating the effects of a non-round throttle cam. At low throttle-positions and low-velocity, you have a mild-mannered NA car. At higher-velocities and larger openings, you'll tap into full-power. But still not have the torque-increase rate be so fast that the car is difficult to control. You're basically taming the mid-range hit of max-boost.
Please count me in for one of these when they're ready. Would it be available as a DYI kit?
Thx
How are you scaling boost based upon TPS? I think TPS-velocity should be part of the algorithm. Let's say you have baseline TPS-scaling:
TPS___scale % of map
20%__0%
50%__25%
75%__70%
100%_100%
Now let's say TPS-position is changing at +X rate:
TPS___scale % of map
20%__0%
50%__50%
75%__75%
100%_100%
In effect, you're emulating the effects of a non-round throttle cam. At low throttle-positions and low-velocity, you have a mild-mannered NA car. At higher-velocities and larger openings, you'll tap into full-power. But still not have the torque-increase rate be so fast that the car is difficult to control. You're basically taming the mid-range hit of max-boost.
Please count me in for one of these when they're ready. Would it be available as a DYI kit?
Thx
Right now the TPS input is linear with rpm but appreciate the feedback. We have been focused in other areas but eventually we will get back to looking at this in greater detail.
10-01-2014, 09:58 PM
This weekend I am going to make the EBC TPS aware. Want to add boost after peak torque in any gear? No problem 
Here is the first cut of the map I put together for the strip:
