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Ran into a snag though regarding switched power circuits and how the STN1110 controls them, as well as picking the right MOSFET. Making progress on the BoM and circuit design stuff, also just received my ECU plug. I'm keeping an eye on things, but I feel the OBD II interface is the most pressing (and to me, important) concern at the moment.
Acura mdx navigation dvd download b1 software#
As far as the software goes for GPS and Media playback goes I'm not too concerned at this point. If that isn't quite feasible, I may just pick up an Arduino of my own or even get the Gertboard that is in the works for the RPi (although it looks to be severe overkill). Hopefully once my RPi arrives it won't be too hard to connect it to the GPIO pins. I have access to an Arduino, so first and foremost I want to proof that in my car.
Acura mdx navigation dvd download b1 full#
Right now my next step is to write out the full BoM for getting the OBDII thing going. Not sure if I want to go bigger, but it's only $10 so not a big deal.
It's a red 16x2 char LCD (my car has red dash lights). This one supplies up to 3A which should be plenty, but again it's something I'll have to specifically figure out just how much amperage the whole unit will use.Īs far as display output for the OBDII, I'm thinking something like this: It's a switching regulator so it's got over 90% efficiency. I'll be purchasing as much as I can from digikey.ca which has great prices.Īs far as getting 5V and 3V goes, following the aforementioned protection circuit I will incorporate probably the MCP16323 which comes in both flavours of output.
The key for me right now is decifering what hardware to buy. The STN1110 datasheet also lists protection circuits, optional LED status lights, voltage sense and protection circuits. I think I'll start with just an ISO breadboard and go from there.Īlso on this subject, there's a bunch of people already doing similar OBD II interfaces with Arduinos. One thing I'm kind of debating is wiring this up to be used on any OBD II car, by incorporating CAN and J1850 as well, though that definitely complicates the circuitry and might be beyond my capabilities. As far as wiring into the OBDII port, my 2002 Acura RSX Type S uses the ISO standard which makes it fairly simple. It runs on 5V though, as does the RPi, and I will probably need 3V as well. The STN1110 datasheet has diagrams for wiring it up. It actually just showed up today, I have it in my hand.
As for interfacing with the ECU, I got this one covered too! I found the STN1110 ( ) and, lo and behold, they will ship you a free sample!! Amazing. I just bought one from - a simple male plug with wire pins for $8 shipped.
Acura mdx navigation dvd download b1 Pc#
Yes, I like PC hardware a lot, but I've never built a circuit board.įortunately I've found a lot of stuff to help, at least in the hardware/electronics department.įirst off, the OBDII plug. First off, I'm not a programmer, and secondly, I'm not an electronics guy either. There's still 2 massive issues with this project. GPS is probably the most minor portion of this idea, as I barely use it as is. In that case I would control music selection with my smartphone, I could still have the OBDII LCD, and I could use GPS on my smartphone as well. Alternatively, I could get a smaller screen and mount it on top of the dash, or even run the Pi "headless" which means without a screen at all. This means spending probably $300 right there, which is already getting a little pricey. There's a pretty good one available that would work well on ebay ( ) which would be great in dash, but the problem is it means removing my current Pioneer deck and therefore I will require a 6 channel USB sound card (front L/R, rear L/R, Sub L/R) and a 4 channel amp to run my speakers. I'm a bit uncertain about the touchscreen idea. Misc entertainment (emulate NES, SNES, etc) Connect to OBDII port and readout to an small LCD screenĤ. However, I'd like to use this page to track current progress.įirst off, I should list what my ultimate/dream goals are with this.ģ. The project I have in mind is pretty big, and I don't expect to get it done any time soon.
Acura mdx navigation dvd download b1 android#
The RPi runs Linux natively, although it looks like Android is very nearly going to get released on it as well so that's pretty cool. The RPi is a credit card sized computer, about as powerful as a smartphone (slighly slower CPU, much more powerful GPU) with HDMI, USB, General Purpose Input/Output pins (GPIO), and an ethernet port, all for $35 (+tax and shipping). I've recently put in an order for a Raspberry Pi, which should arrive in about 2 months (hopefully!).
Acura mdx navigation dvd download b1 update#
UPDATE 11/2/12: All future updates will be on
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