H3rk, I built the software from the ground up.
Bes, I have been thinking about getting a couple of those to test. The load is a coil on a hydraulic valve, and it was creating a voltage drop/spike that the FB didn't like. Moved the FB to a different power source, and it has behaved normally ever since. I'm also seeing some odd behavior from my GPS antenna, which I suspect is also being caused from the voltage drops/spikes. I'm going to change where they are powered from to isolate that spike, which means a mosfet won't work for me any more. For right now, I like the sound of the relays to know what they are doing, but ultimately I need something more resilient, and a solid state relay looks to be a good option.
HiJackX1 UAMCB w/ The Tobiathin Core Android/Win 7 hybrid system!
4x 10inch Tablet
1x Win 7 / Rear Entertainment PC
ft/ Web Server Streaming
These are likely the solution I'll be using in my setup.. Absolutely no chance of power leaking across the gate as there is no physical connection for it to happen to.
Brilliant idea for running a tractor BTW.. I should show your idea to my aunt.. Maybe she'll let me pimp out her tractor too!
'02 Mazda Protege5
'92 Jetta IDI
No carputer yet - but its in the planning!
I work for a company that makes all kinds of relays.... I'm going to spread the word how these are used....
Solid state relays will do the job, these can handle up to 125 Amps...
EPIA TC 1G 256MB 60GB Linux,WindowMaker, Roadnav, Xine, XMMS, iGuidance3
Lilliput 8", Pharos i360, WUSB11v2.6 WiFi
Here are a couple videos of the system in action. The first video is what it looks like in the cab, the second video shows the blinky lights on the FB.
Since I originally posted, I have added a yaw sensor to the system, which makes the steering much smoother. The only time I feel it make a steering adjustment is when I go through some rough ground. Even then, it is only a 3-6" steering move. I have gotten the line-holding ability down to staying within 6" of the line, and I'm still working on making the even smaller. My goal is 2-3".
And since you guys brought it up, I am told that there are city buses in Minneapolis that are being driven by GPS. The driver brings the bus to the curb, and puts it back in the traffic lane, but then the computer takes over and steers the bus along the route. The driver still has control of the throttle/brakes, and of course can manually steer to avoid a collision or whatever.