Car Suspension Airbag Monitor

Projects General Guidance
1

I've installed a set of suspension helper springs the rear suspension of my truck.

http://www.truckspring.com/products/Firestone-Sport-Rite-Air-Bag-Kit-Nissan-Xterra-Rear-2WD4WD__2409.aspx

At this time I have to manually check the PSI of each airbag. What I plan to install is the following:

I don't like the analog gauge and currently have an LCD screen mounted on the dash for a backup camera. The LCD currently has one unused RCA video input. What I would like and why I've come here is to see if its possible to build an arduino setup that will measure the PSI in the air line and then display that number onto the LCD screen as a gauge or simply a number display. Thanks.

2

You can probably do that.

Take a look at [u]TV Out[/u].

I think there are some display/resolution limitations due to limited memory, but I assume displaying a few digits is no problem.

You'd need a pressure sensor that puts-out voltage, and you'd need driver circuits (transistors/MOSFETs) to drive the compressor relay and any solenoid valves.