I installed an auto steer system over the winter using the v4.5 aio pcb. I’m using a phidgets motor to turn the wheel, and a single F9p paired with an imu. I have the lates version of AOG installed and went through the setup wizard. I’m using my own RTK base station that is located 3 miles away from my field.
Today I went to layout some beds for seeding. At first it was all over the place deviating up to 5 centimeters from the line. I adjusted settings to make it more aggressive and got it to a point where it was driving amazing. I did 3 rows 1 after the other alternating directions. Once I was established on the line it held zero the entire 1000’ row. Then on the 4th row it starts deviating up to 4 centimeters. I had to adjust the steer settings again and gave up for the day with it driving within 2 centimeters accuracy.
It doesn’t make any sense to me, is it common to have to adjust steer settings regularly? I was expecting to set up steer settings once and then forget about them. Seems like every time I start a job I have to spend 40 minutes dialing in the settings.
Here are my steer settings.
steering response: 2
Integral: 1
WAS zero: 9.1
CPD: 91
Ackermann: 93
Max Steer Angle: 30
Dead zone: Default
Speed Factor: Default
Aquire: Default
P Gain:40
Max limit: 180
minimum to move 45(steer wizard had me set it at 30-35 ish but it was way to slow to make corrections and bumping it up helped a lot)
everything else is I believe is default.
Kind of losing my mind over here so any help is greatly appreciated. I was blown away by how well it was driving for the 3 rows. I really hope I can get it to that level of precision more consistently.
I have it oriented with X facing front and this is set in AOG as well. I have to revers roll in order to get a positive indication when rolled to the right. the pcb is located to the right of my seat not sure if it has to be centered in the tractor?
Not needed to be center. But it MUST be level AND firmly secured to cabin ( floor or side)
IMU is correct with the X arrow pointing forward as you say, but again level with Z looking up.
pcb is hard mounted inside a 3dprinted box and the box is double sided sticky taped to the metal floor its pretty solid defiantly not moving from bumps.
Not at computer now, but when F9P is set as rover, you should see that Hz number when you click the antenna symbol(or one of the other symbols) at around top centre of screen (will show in black info box at left side of screen)
What kind of Wheel angle sensor do you use? I would double check that there is no backlash or play in it.
Having an incorrect CPD can also have some bad effects. It is recommended to use the record function and adjust CPD to have the actual angle matching the recorded one.
Some people then tweak it by raising (or lowering? I don’t remember) a bit.
If all this is correct then there will be the other settings to check.
Either is good as long it’s stable, (not fluctuate between 5 or so and 10) and never stable at 1 Hz
Show pictures of tractor and implement, and also seeding beds, they are not what I thought, because you drive quite fast. Low speed is below 1 or 2 kmh
You have not shown picture of tractor and machine, but at this moment I suspect sidedraft from mashine, and perhaps slip(sideways) between front wheels and ground.
When I use my 12 m weed killer harrow, I have ± 20 cm, at speed of about 12 kmh, even with duals at both front and back axle.
Perhaps extra front weight could help you?
Seeding with 8m trailed mashine was around± 5 cm, it look like this. And you see I still have issues going through slopes.
its possible but why would It drive perfect for a couple rows and then drive terrible for the rest without changing anything. Same field, same settings, same speed, same ab line.
