Arduino boost Gauge

My idea to start an Arduino boost gauge came from an eBay listing of a LCD Boost gauge sent by a friend, asking if he need one is Nissan 200sx. The boost meter in question was a made by a Japanese company called "Mines". This gauge displays the boost pressure in on an LCD display rather than the normal round mechanical display. 

Mines LCD boost meter

Now I'm a big fan of boost gauges and having owned a number of turbo cars, both petrol and diesel I had a boost gauges in almost most of them. 99% of the time they will tell you the same information, but it’s that 1% that will simplify any trouble shooting you have to do, like diagnosing a boost leak or boost controller fault.   

Currently I'm driving an Audi S4 B5, a 4 door saloon one with a 2.7L V6 twin turbo engine (produces 265PS) and I have always wanted to put a boost gauge in the S4, but I decide as it quite nice sitting inside it I didn't want to spoil it with a cheap mechanical gauge, or fit the common centre vent mod that allows you to neatly fit a gauge in the centre vent, these can be costly at around $200. So I left it at that.

That was until I got sent the link. I looked at the mines boost gauge and like the look of it. As I thought it could fit nice in the black interior of the Audi. Being a nice rectangle shape I thought it would be easy to make it discreet.

Now I've played a bit with an Arduino controller, having bought one a year or so ago, but I never really got round to properly using it. so knowing the capability of the Arduino I decided to have a quick Google to see what others had used.

I found a posting on a Seat Cupra forum and a link to the guys blog nsfabrication. He uses a Arduino control and the popular 16 x 2 LCD display to display the boost pressure from a Freescale MPX4250AP pressure sensor.

Muzza1742's finished Boost gauge