AgOpenGPS RTK Autosteer, How to Guide for £1000

Larel · Feb 27, 2024

Trying to get AOG set up. I’ve put the basic settings into the steer wizard but have a few queries.
what is the A/D converter

How do I know if I want to invert the hydraulic enable relay?

I’ve got a Baraki valve so I assume it’s no to the

where do I read the value for tilt? Can’t see anything moving when I tilt the tractor

When I turn the steering wheel the values in the screen don’t change

and i can’t get the autosteer to engage? But as I type this does the system think I have a motor instead of a valve??

and again I’m not sure about this screen?

Apologies for the noddy questions, but thanks in advance.

clbarclay · Feb 27, 2024

AD is analoge to digital converter. If you have only three wires to the wheel angle sensor then that should be single. Double is when you have a fourth wire from the WAS that is a separate ground for the analog signal to be referenced to.

Seems like something isn't connected right if the roll doesn't change as the sensor is tilted. Same with WAS. If they are working then you should see the wheels turning on the screen as you steer the tractor before using the wizard. They might not be pointing or moving the same way on the screen as tractors wheels, but they should still move when you steer.

Apart from the Danfoss valve which I understand use a different style of PWM signal, there PWM output from the cytron is the same for for brushed wheel motors and most proportional hydraulic valves. There isn't a setting for either one or the other.

Larel · Feb 27, 2024

clbarclay said:
AD is analoge to digital converter. If you have only three wires to the wheel angle sensor then that should be single. Double is when you have a fourth wire from the WAS that is a separate ground for the analog signal to be referenced to.

Thanks for that. However, I have a new development! Since I posted the last photos while playing with settings the steering went hard left when I selected autosteer. Since then I’ve lost the power steering completely! No idea what I’ve done. But will disconnect the Baraki valve tomorrow night and revert the steering hoses to where they were originally and see if I can get the power steering back working.

Andy26 · Feb 28, 2024

Larel said:
Trying to get AOG set up. I’ve put the basic settings into the steer wizard but have a few queries.
what is the A/D converter
View attachment 1166973
How do I know if I want to invert the hydraulic enable relay?
View attachment 1166974
I’ve got a Baraki valve so I assume it’s no to the
View attachment 1166975
where do I read the value for tilt? Can’t see anything moving when I tilt the tractor
View attachment 1166976
When I turn the steering wheel the values in the screen don’t change
View attachment 1166977
and i can’t get the autosteer to engage? But as I type this does the system think I have a motor instead of a valve??
View attachment 1166978
and again I’m not sure about this screen?
View attachment 1166980
Apologies for the noddy questions, but thanks in advance.

Just click through and accept default for AD, Danfoss etc, when you get to roll, click on invert as from your pictures you have Ampseal facing rewards. Your valve is just like an electric motor steered by PWM so when it says motor that applies to you.

WAS you should see the number change as you turn wheel and you want a positive value when you the wheels are turned to the right, so invert if not.

There must be something wrong with your plumbing, the Baraki valve should always fail safe (ie turn off power to AOG it should return steering to normal).

Andy26 · Feb 28, 2024

Larel said:
Trying to get AOG set up. I’ve put the basic settings into the steer wizard but have a few queries.
what is the A/D converter
View attachment 1166973
How do I know if I want to invert the hydraulic enable relay?
View attachment 1166974
I’ve got a Baraki valve so I assume it’s no to the
View attachment 1166975
where do I read the value for tilt? Can’t see anything moving when I tilt the tractor
View attachment 1166976
When I turn the steering wheel the values in the screen don’t change
View attachment 1166977
and i can’t get the autosteer to engage? But as I type this does the system think I have a motor instead of a valve??
View attachment 1166978
and again I’m not sure about this screen?
View attachment 1166980
Apologies for the noddy questions, but thanks in advance.

For roll.tilt, I cannot see what version of AOG you're using 5.7 variants will have bar on screen to see the tilt, on 5.8+ in the bottom right hand corner there's a bar/compass that tilts with tractor.

I can see in one of your pictures you have a roll set, as by default its zero.

Wombat · Feb 28, 2024

Larel said:
Thanks for that. However, I have a new development! Since I posted the last photos while playing with settings the steering went hard left when I selected autosteer. Since then I’ve lost the power steering completely! No idea what I’ve done. But will disconnect the Baraki valve tomorrow night and revert the steering hoses to where they were originally and see if I can get the power steering back working.

does it have a relief valve on the pump or was it on the orbitrol? and the valve just bypassed it?

Larel · Feb 28, 2024

I’ll take this to another thread but after investigating the pump tonight there’s a sheared woodruff key in the drive of the pump. Assuming the deadheading was the final straw but I don’t know if it was a hidden fault partially sheared and waiting to go completely.

Andy26 · Feb 28, 2024

Larel said:
I’ll take this to another thread but after investigating the pump tonight there’s a sheared woodruff key in the drive of the pump. Assuming the deadheading was the final straw but I don’t know if it was a hidden fault partially sheared and waiting to go completely.
View attachment 1167197 View attachment 1167198 View attachment 1167199

The P and T lines were not mixed up?

Larel · Feb 28, 2024

Andy26 said:
The P and T lines were not mixed up?

No, they are definitely not mixed up. I took a vid tonight. You have to study it at the end but the line from the pump definitely goes to P. The line at the back the. Comes from T and goes onto the original hose from the pump to the orbital.

Andy26 · Feb 29, 2024

Larel said:
No, they are definitely not mixed up. I took a vid tonight. You have to study it at the end but the line from the pump definitely goes to P. The line at the back the. Comes from T and goes onto the original hose from the pump to the orbital.

That sounds like thats all correct.

So has the pump dead ended when it steered hard left and the ram got to the end of its stroke?

There is a relief valve in the OC Baraki block that should of dumped oil to the T line if pressure gets to high.

Larel · Feb 29, 2024

Andy26 said:
That sounds like thats all correct.

So has the pump dead ended when it steered hard left and the ram got to the end of its stroke?

There is a relief valve in the OC Baraki block that should of dumped oil to the T line if pressure gets to high.

View attachment 1167251

Yes, Im assuming the pump deadheaded, but there is also a relief on the pump itself which should have lifted protecting the pump. To test the Pump internal relief I'm thinking I'd need a pressure gauge inline and deadhead the pump while watching the RV lift on the press gauge.. But initially I'm going to strip the RV and check its free to move and not jammed.
Then plumb it all up again and do another round of line checks on the wiring before attempting the steer wizard again.

Masseymad · Mar 2, 2024

Currently running a MF 7720 and using its own built in Autosteer but it's not great to use and keeps playing up. I'm I right in thinking that I could get AGopenGPS to use the current in built steering valve via canbus for steering and wheel angle sensor. Then an imu for tilt and a board with antenna attached for relaying back to a tablet?

Andy26 · Mar 2, 2024

Masseymad said:
Currently running a MF 7720 and using its own built in Autosteer but it's not great to use and keeps playing up. I'm I right in thinking that I could get AGopenGPS to use the current in built steering valve via canbus for steering and wheel angle sensor. Then an imu for tilt and a board with antenna attached for relaying back to a tablet?

Yes exactly, the IMU is mounted on the PCB with the GPS/RTK receiver, you'll see referred to as an 'All in One' PCB.

del_boy · Mar 2, 2024

Masseymad said:
Currently running a MF 7720 and using its own built in Autosteer but it's not great to use and keeps playing up. I'm I right in thinking that I could get AGopenGPS to use the current in built steering valve via canbus for steering and wheel angle sensor. Then an imu for tilt and a board with antenna attached for relaying back to a tablet?

Whats not great about it and what keeps playing up? If is the wheel angle sensor or wiring problems or steering valve you might still encounter these problems even if you go the agopengps route

Northern farmer · Mar 2, 2024

Masseymad said:
Currently running a MF 7720 and using its own built in Autosteer but it's not great to use and keeps playing up. I'm I right in thinking that I could get AGopenGPS to use the current in built steering valve via canbus for steering and wheel angle sensor. Then an imu for tilt and a board with antenna attached for relaying back to a tablet?

Perhaps not the correct thread to ask but I would also be interested knowing how it plays up and which GNSS receiver does it have (thought it is new enough to have either Novatel or Trimble that should work well)?

Masseymad · Mar 2, 2024

del_boy said:
Whats not great about it and what keeps playing up? If is the wheel angle sensor or wiring problems or steering valve you might still encounter these problems even if you go the agopengps route

The steering parts fine it's the receiver and the screen. Sometimes work fine one day and the next there's no GPS part on the screen. And then you can't get to any settings because there all in the GPS section that doesn't appear untill the dome is turned on so trouble shooting is impossible. That and the screen is a datatronic 4 and it's not user friendly so nobody else knows how to use it.

andyinv · Mar 2, 2024

Masseymad said:
The steering parts fine it's the receiver and the screen. Sometimes work fine one day and the next there's no GPS part on the screen. And then you can't get to any settings because there all in the GPS section that doesn't appear untill the dome is turned on so trouble shooting is impossible. That and the screen is a datatronic 4 and it's not user friendly so nobody else knows how to use it.

I did a 7720 the other week, works great over canbus. Check the thread on the agOpenGPS discourse for the 6718s I did

Larel · Mar 2, 2024

New key fitted to the pump, relief stripped and reassembled, doesn’t look like there was anything wrong with it.
I think I had the WAS in the wrong orientation last time and it drove the wheels the wrong way.

. Not sure why the relief didn’t protect the pump though.
Next issue, looks like the pressure sits about 23% but when I engage autosteer it rises to about 70% and deselects autosteer. Any thoughts on why it’s going so high?

davidroberts30 · Mar 2, 2024

Larel said:
New key fitted to the pump, relief stripped and reassembled, doesn’t look like there was anything wrong with it.
I think I had the WAS in the wrong orientation last time and it drove the wheels the wrong way. . Not sure why the relief didn’t protect the pump though.
Next issue, looks like the pressure sits about 23% but when I engage autosteer it rises to about 70% and deselects autosteer. Any thoughts on why it’s going so high?

Turn your angle setup to about 15 degrees till you set it up so it doesn't go full lock and deadhead it again

Larel · Mar 3, 2024

Things are going better with the autosteer today. I was getting over 6 volts out of the press sensor, hence it was sitting at 75%. Had an Instrument tech from my work have a look. I had wired the press sensor direct to the 5v and ground output from the transformer. He linked the ground from the transformer to the tractor chassis and it was back reading 0.6V (I think from memory) across the terminals and 19% on the screen.
It is now steering but quite a bit of overshoot on the steering rams do need so play with the gain etc I think.

AgOpenGPS RTK Autosteer, How to Guide for £1000

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