The reason why I divided it this way is that I can quickly and easily disconnect the small box (one USB cable and GPS antenna cable) and transfer it to another tractor and use the AG Open GPS in it without autosteering (for example spraying).
The tablet I’m using is a Umax Vision Book 10Wa, that runs the AGOpenGPS application. The holder that holds the tablet is 3D printed.
For the steering I use the hydraulic steering valve (by Baraki). I placed it under the hood above the engine (enough space, short hydraulic hoses). This valve has built in pressure sensor so if you touch the steering wheel, it automatically turns off the autosteering.
This tractor has also a built-in wheel angle sensor from the factory, so I used that. It is located on the front axle on the right side. And I am using the GPS antenna which is fixed on the roof.
Hello David! I’m trying to assemble autosteering in NH T7.210S. Also, I have pre-installed WAS. My question is…Did you have any issues while connecting pre-installed WAS into AgOpenGPS - I mean any errors (CANBUS errors) on screen? Did you phisically cut WAS wires and attached them into the steering board? Any photos?
Hi Bartolomeo, I don´t have photos, but the original WAS has 4 pin plug (under radiator, right side) and 3 pins are used: +5v, gnd, and signal. You must disconnect +5v and gnd, connect them with same power that powers arduino and you need to make by-pass on signal wire.
I don´t have any problems with it. Maybe on newer tractors there will be, because of disconnecting +5 and gnd.
Maybe disconnect the plug and see if you have any errors.
If you dont use the auto 4wd and diff lock function and no error codes it would be ok.
Reading on another thread its believed the factory fitted was used for the auto functions has a varying 5v supply so you will need to put the 5v and ground from the WAS pins on the ampseal to the sensor plug. I think if you just leave the signal wire alone and add a branch to the ampseal WAS signal you should have the auto 4wd functions still work
