Parts List

This list is only a starting point. Each hardware installation will be unique to the tractor. This list is not yet complete but it is based on a JD7930. My original installation used actuators to physically move the controls but a better solution is to tap into the wires of the controls using an arduino but this comes with its own challenges, mainly dissasembling the tractor and cutting and soldering wires in tight areas. Also I haven't wrecked any swithces on my tractor yet but if you short something out this will not be cheap to get replacemnents and they will most likely be days away so pick a time to work on your tractor when it wont be urgently needed.

Pixhawk Don't forget the telemtry radios. If you are serious about making it work good on a tractor ditch the small lightweight gps recievers and opt for a commercial agricultural reciever. Or a very interesting alternative is Piksi Haven't had time to try this yet but it looks very promising.

Arduino Pro Mini (x2) One for the shuttle shift and another for the speed control lever. Possibly a third for the throttle??

RS232 Convertor For converting the NMEA stream from your gps reciever to something the pixhawk can use.

12v remote relay For use as a redundant safety sytem. It's cheap so order as many as you have people in the field so everyone can stop the tractor if neccessary.

Touchscreen tablet with a usb port I like the microsoft surface because it doesn't have a keyboard and it has a full size usb port. Would be nice to get it working on an ipad or nexus tablet as well.

Outback steering valve and controller with feedback such as jrk12v12

Ram Mount for tablet

Wire

Soldering Iron

Logic analyzer Invaluable tool for monitoring electrical signals and troubleshooting.