Speed through GPS sensor
I want to use Dashcommand for my gauges in a hot rod using a 2003 chevy ls engine. However it just hit me today that I am using the old Turbo Hydromatic transmission. Is there a way to display the speed using a GPS module, like with a Aurduino? Also the sending unit for the gas level is a after market 20 Olms I believe that does no is the engines computer either. Is there a way to hook this up as well while still using Dashcommand? Or is there a better operating system I can use? Any help would be greatly appreciated.