OK, so I got the 'guino installed, finally found my ECU, and tapped the VSS and INJ wires. Hooked it up, and would you know it, it worked right away!
Immediately saw raw data flowing in. Got the VSS pulses calibrated at 8000 to match my ODO perfectly. I might calibrate to my GPS instead though since its more accurate.
One issue tho, the garbage on the LCD issue came back.
Seems like it doesn't like the noise added by the VSS and INJ wires. I did notice though that it only seems to happen on the double-line screens. The big MPG screens will stay up fine. Are there any differences in the timing or anything for the displays? I'm going to have to dig in and tweak.
Aside from that, now that this prototype is working, I think its time to look into the clean install, w/ a smaller 'duino (iduino) and a backlit LCD. Has anyone come up with a green or red backlit LCD that is known to work well? I think my primary issue is a difference in tolerance between my LCD and the NKC. I just won't be able to handle the glare off a blue LCD at night (which is what I'm after since my non-backlit LCD works fine in the daytime).
