Hi. I drive a Seat Altea (VW) in Germany. Here speed limits change continuously and I'm becoming obsessed checking tacho after getting a couple of fines (driving 39 and 41km/h with limit 30 ) . This reduces greatly the attention I give to the road.
To ease things I use a lot the cruise control, but with it you just fix the speed when you reach it, and this means to watch the tacho instead of pedestrians. Annoying.
My dream: OBD, arduino and 4 accessible buttons. After activating the cruise speed in the standard way, pushing each button would SET a different cruise speed. I assume the cruise speed is normally written inside a register: I would only change this value.
The hack doesn't activate the cruise speed, but change it when already active.
As soon as I brake the cruise control switches off. From the point of view of security it doesn't change anything.
Is it possible to SET values with ODB or just reading them?
If yes, any idea about where to find "register " maps to know where to write the value?
I know my Seat Altea is Volkswagen compatible because my car is involved in the gas scandal... >:(