Today we are building an Arduino based air ride/air bag controller for our 1969 (nice) VW Beetle LS swap. Unfortunately all the air suspension kits I found were all over $1000 and seem super complicated compared to what I wanted. The rear end of our car sits on two air bags and I simply wanted a controller to turn a relay "on" that would allow the compressor/valve to open and then using an air pressure sensor it would automatically turn itself off. The written DIY guide and Arduino code to run this project is all available on our website, linked below.