On some older models with the pulse type encoder I run into issues. It seems like the wheel constantly moves in some position.
I’m thinking about increasing pulses to 3-5 (that needs more turn on the wheel to trigger) and at the same time every 3-5? seconds I’d do a pulse - 1 that way if the wheel itself doesn’t shake a lot it would not disengage.
Any thoughts about this?
Do you guys experience the same?
could yous describe model and year of JD ?
in this video it will be 6120M 2023-2024 series
The encoder is sending a pwm value that it will be impossible to read with ADC converter
but if you check the frequency and his evolution * you can do it
*It means the quantity of modification during time like a do with my virtual turn sensor
I was able to convert it to a % it was a few years old model 6110M with FEMA valve.
(we couldn’t bypass the errors of autotrac though… maybe someone can disable it via a laptop?)
but my scope was showing the exact same output and I decided to use the Pressure input as it has the voltage divider and protection
You need a friendly JD tech with the laptop and a payload file to tell the tractor to shut up about it - not easy to come by, apparently.
From what I know, 30 series are quadrature encoders, newer are variable duty, mostly.
For the code, I saw that I could disable autotrac in the diagnostic menu on a 6430. But I didn’t, in case it would not reactivate later if wanted. If the owner want sell it.
Hi, from where are you powering the nano? I just tried to power it with 5v and ground from the deere encoder. This turns the power off from ssu to encoder, and it throws a code. I mesure +4,5v when nano is not hooked up, but seems like som kind of detection in the ssu turning power off
From AiO board was 5v and GND
Hi, just by reading thru these posts i had a idea in order to surpass the Autotrac error.
If we would use a Nano or something simmilar as a sort of middleman inbetween the encoder and the SSU, which passes the signals like normal to the SSU until Agopengps engages, then id should emulate the steeringwheel moving realtive to the WAS position (to keep the SSU happy) and detect a turn of the steeringwheel by the operator in order to disenagage Agopengps and pass the actual encoder value back to the SSU.
Installing the Nano into the harness should be the smallest problem. Let me know what you think.
It’s a good idea. Let us know how it goes.
I believe it is agleader that provides passive resister packs to plug into the ssu cables on their auto steer system to prevent it from complaining about unplugging things.
On any Deere tractor older than about 15 years I know you can just unplug the ssu and get no errors. Because many tractors back then could be bought without being greenstar ready.
Reverse engineering the ssu protocol would be even better. It’s possible. I know of one guy in Alberta who sells a device that pretends to be an ssu so greenstar can steer other brands of tractors using their OEM valve and sensors.