Hey everyone!
Problem finally solved!
I switched to a different Arduino — and bingo, it worked!
On the bright side, I learned so much about Linux, Arduino, and troubleshooting in general.
Big thanks to Laurence and Martin for the support.
73, S50BN

To make things clearer:

when I start p2app with the optional argument -d, I can control the radio through Thetis and everything works normally.
However, when I start p2app with the optional argument -p, the G2 panel is recognized by p2app, but Thetis then shows the same erratic VFO behavior (as in ...

Hi again,
I’ve done a few things:

-Checked the two traces from the 10k resistor to the Arduino SDA and SCL lines – they are OK.

-Re-uploaded the software to the Arduino board (as suggested by EA2K in the post “G2 Ultra VFO encoder issue”).

Unfortunately, nothing helped — the behavior is still the ...

Hello Laurence and Martin,
Thank you for your suggestions — I’ll give them a try and, of course, report back.
However, my G2 won’t be accessible to me again until November 8.
(And yes, an oscilloscope is available.)
Best regards,
Bonin,S50BN

This behavior is new, and I haven’t changed anything in my setup.

Until about two weeks ago, everything was working fine.
Then, suddenly, the VFO stopped working correctly — no changes were made on my side.

I'm not exactly sure which pins you're referring to, but I can confirm that previously the ...

One more thing I’ve noticed now:

When I start P2App, I can control the G2 from Thetis without any problems.

However, when I enable G2 control in P2App (i.e. enable Front Panel Control, -p), the VFO in Thetis starts moving on its own.

So at the moment, I can control the G2 via Thetis — but I must ...

Mine is the same – 5 pins.
There is a small PCB on the encoder, connected to the main PCB via 5 rigid wires.

On the disconnected/cut rigid wire in the middle, I measure 5V on both sides of the resistors, and also on the second and fourth rigid wires (which are signal lines) on the encoder.
On the ...

I think the one we’re using is an Arduino Nano Every

In the meantime, I cut the power wires going to the encoder, so it is now inactive—but the VFO still behaves the same.
It seems the problem is not with the encoder.

Hi Laurence,

first of all thank you very much -You are the only one who has taken my problem seriously, and I truly appreciate that.

I was previously in contact with Apache Labs—specifically with Doug. His only suggestion was to try making a copy of the SD card. I followed his advice, and I ...

I've finally followed Doug's suggestion from Apache Labs and flashed the factory image — unfortunately, it didn’t resolve the issue.
I'm still experiencing the same behavior as before.

Could someone with expertise kindly advise me on the next steps?
Many thanks in advance for your help.

Best ...

Hi Laurence,

yes, everything else work es it should.
I need a schematics, or does anyone know what encoder is used?

73, S50BN

Thanks a lot to all,

i will contact AVG Radio.
Has anybody schematics from G2-ultra.
I have already contact Apache labs, no response.

73, S50BN

Thanks James,

do you know where - i am in Europe?

Best regards,
Boni, S50BN

On Discord is video from VFO behavior:

https://discord.com/channels/1271453528 ... 9700886611

or in Groups.io

https://groups.io/g/apache-labs/message/3880

Hi,
today my G2-ultra show strange behavior, namely VFO running alone and VFO knob is barley responsive?
The same is in Thetis.
Anny idea what can be wrong?

Thanks

Is fully functioning again - have edit only command line several times.

Hello,

i have one issue with p2app desktop shortcut -

when i try to start them i get a error message " in folder - /home/pi/github/Saturn/sw_projects/P2_app - could not be changed (file or directory not found)".

But, wen i run p2app thru command window with lines:

- cd github/Saturn/sw_projects ...