Big update:
Got the new prototype finished and installed in the car! Barely had time to get some photos of it before I had to entertain some company, have not had a chance to drive it yet, but wow this new display looks GOOD:
Lots more screenshots as well as mounting shots in my car available in the gallery, high res and all - you can even make out the reflection of my fingers holding the camera in the display's glass.
http://www.thawa.net/gallery/LegaCU-Prototyping
Tomorrow I will have an opportunity to take a test drive and perhaps tweak a few settings, and hopefully I'll have something functional to layout onto a printed circuit board and get production started.
Looks like the minimum I can sell an assembled unit for will end up around the $150 - $200 range, so of course I will offer the lowest possible price to Legacy Central board members. My friend intends to market the unit as a universal electronic boost controller in a slightly different configuration and sell it for more than twice that, but don't worry, you guys can always get them direct from me just a little over my cost (just payin' me for the labor of assembling and testing them).
Those who have donated parts and assisted with the general research (off the top of my head, I can think of Vikash and Jason) can get units at parts cost, I will return your favors by giving away my labor.
I also plan to offer a lower-cost kit that just includes a programmed control chip, printed circuit board, schematic diagrams, parts list, and online supplier list for those who wish to assemble their own parts and units. (a different 4x20 LCD or different buttons can be selected, for example) Most people will probably end up just getting assembled units though.
This product will have serial datalogging for laptops, and I will write Windows software to gather and assist in analyzing it. This may not all be in the first revision, however the hardware will all be in place. This means that, when I get the datalogger done and have software available for download, I can sell an upgrade chip for like $20 to those who wish to add the new capabilities.
Whew! I'm tired. Good night!
Edit: Oh yeah - I forgot... coming soon, the option of vertical bar graphs! These screen shots ought to be food for thought as far as how you guys think this stuff ought to be displayed. If you have any suggestions by all means post them here, otherwise I'll keep adding to and refining my interface, which I believe will be quite intuitive and user-friendly.
Oh oh oh and I did get the settings saving to EEPROM/Flash memory successfully now. I can now set my three boost levels, throttle threshold, etc, and save the settings, then next time I turn on the unit they're still there.
I have also worked out the button readings to happen in such a way that most of the button combinations can easily be separate functions or shortcuts, and I already have 6 buttons (up/down/left/right/overboost toggle/reset peaks). This all only takes up a single input pin on the PSoC, too. This is VERY expandable...