Sorry for not responding till now. I guess I don't check to see if there are updates to my subscribed threads often enough.
I've been working on V2 of this thing. Basically just a consolidation of all components used onto one single PCB. Makes assembly much cleaner. Logging with RR is flawless thanks to Paul's efforts.
I collaborated with an EE friend of mine to develop the schematic for this. Once we checked and rechecked everything, he laid the components out in PCB design software and sent out for the bare boards to be made. He then soldered all the components on by hand.
Here it is during some initial testing in car.
I would like to use a 20x2 Serial VFD. I'm trying to talk to some sales rep from Noritake that might get me a sample but he takes forever to respond. Also, the ability to read the gauges in sunlight is paramount. This is why I will only use a Transflective LCD or a VFD with a proper filter.