AgOpenGps USB

My Setup
Panasonic FZ-G1
This kit from Ardusimple. [RTK Portable Bluetooth Kit, lightest solution with ZED-F9P - ArduSimple](https://www.ardusimple.com/product/simplertk2blite-bt-case-kit/
I am using the USB cable to supply power and data, rather than the bluetooth.

I am simply using it as a lightbar rather than Autosteer.

It all works great until the tractor engine is switched on and then I guess a mix of vibration and electrical noise cause a lot of problems. It all works fine too driving around in the car, I guess no vibration or electrical noise in the car.

Problems
I have issues with USB dropoff with agopengps.

To investigate this I installed this USB port monitor tool.
https://www.nirsoft.net/utils/usb_log_view.html?fbclid=IwY2xjawRSsOZleHRuA2FlbQIxMABicmlkE…

When you plug and unplug a USB port it records it.

I did some testing yesterday.
Observations - When AgOpengps drops its NOT disconnecting in the log tool. When I unplug the cable physically yes the log tool picks it up. Thus I guess I should conclude its not the USB ports are the problem.
Cables - Im using this cable. It goes from the pixhawk connector on the f9p board to the usb port on the Fz-g1.
https://www.ardusimple.com/pro…/usb-to-jst-gh-6-pin-cable/
All the cables I have been using are unshielded I tested them all with a multimeter this evening, if that makes any difference.

Receiver Data
The data coming from the receiver, which has been setup using the recommended file transmitting at 115200, when setup on a bench runs at either 1230 or 1845. When driving around in tractor it reduces going down to 500 and 600 and the screen gets v slow to update, it’s like it freezes. Sometime after this happening it can jump up to 60 000approx for 1 seconds and drop down again to 12-1800.

Any ideas


You didn’t say how you are powering the setup. I would guess you are right saying it is electrical noise. Maybe the diodes in your alternator are going bad and letting ac voltage into the system. If that’s the case it will be worse when there is more load on the electrical system.

all powered from the panasonic during my tests, I didn’t have any external power supply plugged in, 2cores of the USB cable supplying 5V to the f9p and antannae, the other 2 cores taking back the signal to the FZ-G1

You mean you are powering it off the computer battery? You are totally isolated from the tractor electrical system?

yes totally isolated all powered off the computer battery

It must be the vibration then. Maybe if it’s not the USB cable it’s the antenna cable. But I’m just guessing.

Is there any software tool I could use to monitor the USB port to see what is going on