Quote: Originally Posted by
Mrbmw99 
So can we consider you a customer now? 
- Brett
Sure !
Quote: Originally Posted by
Mrbmw99 
Thanks for the diagram - it's actually pretty close to what will be done. I haven't looking into the TDA 7560 yet, but I will. I think we will be using the Microtune AM/FM/RDS modules (IF they ever return my calls!).
Nonono

! don't waste time (concentrate on UNSOLVED problems! don't reinvent the wheel) - the XTronic guys have solved this problem already - contact them (they can supply you with IC's, ...) - what about installing a HQCT onboard ? (everyone needs a radio and its cheaper to design it onboard) (removing their PIC still saves money)
Quote: Originally Posted by
Mrbmw99 
.... and lets collect for Bill Gates he will not be the richest man on the world if this Indash Unit is done !
Boy - that'd be nice!
Did you ever install a PC into a Car ? think about the problems and try to solve them with your Unit ! (this is the secret)
Remember: a carinfotainment-system with DVD and Navigation costs around 2500 Euro/$ - if your system with a PC (Voom+M2ATX+MiniITX) costs the same and has the same features (plus the versatility of the PC) then you have a killer-prooduct.
Such carinfotainment-systems have a daylight sensor (thats only a "cent part") so if the headlights are on they turn on their night skin - if its bright now in the car (lamps beside the streets) they raise their background illimunation.
DON'T do this logic yourself (THIS has to be done in the frontends!).
Some of these I/O lines are also a good idea to consider:
If the ON button on your unit is pressed you can switch on the PC...
or if the doors are opened/or the central lock is switched... (this is a firmware issue - see my statement about open source) then the PC could start with switched off TFT...
Illumination of Buttons:
Measure the Voltage of the Indash_Illumination/Headlights_on_signal to be able to control their brightness (also done in "professional" systems).
Have you ever see blue illumination in a BMW ? Looks like aftermarket and not factory install (and "battles" with the orange dash illum.). So use RGB LED's (they are some cents more expensive) than green, orange, blue or red LED's.
You see: some parts are only cents but raises the unit from cheap aftermarket crap to professional level.
Quote: Originally Posted by
Mrbmw99 
I am looking into using USB audio chips. This would be my preferred way of doing this because it would allow the frontend to "fade" or switch between audio sources nice and cleanly.
these things are really nice...
Quote: Originally Posted by
Mrbmw99 
The GPS will be a module that we can install. It's not our design. So, it's easy for someone to say yes they want it or no they do not. Either way, the mainboard will have the circuitry to interface to it regardless of whether or not the module is actually install (meaning it can even be added later). I don't know much about dead reckoning, maybe you can send me some good documentation?
Sorry there is none available ... but if the Satellites=0 then look for the Gyro and the speed pulse and continue to write the NMEA stream yourself...
The U-Blox module + Gyro is expensive if your order only one - but I could imagine if your order masses of them their price may fall significantly...
(search for U-Blox in this forum for more info)
www.u-blox.com
Don't care for the software - concentrate on hardware... What about open source ? You feel that it could be copied easily ?
Sorry guy I could copy it without your open source software too - I only need some money...