Citrin Solar CS 1.3

[Luca]

Dear all,

my name is Luca, I would like to read some data from my solar regulator

Citrin Solar CS 1.3. Is this regulator compatible with Resol VBUS/USB controller.

Do you have some experience with this regulator working with

Resol VBUS/USB + raspberry Pi?

I tried this hand made VBUS adapter without results. I'm not able to decode the signals.

I would like to try with the USB interface, probably the VBUS/USB interface can translate the messages?

Thank you in advance.

Best regards.

[Andrew White]

I don't know this controller , but it looks like it has a vbus interface.  What have you done to try decode signals on the pi ?

I use the official serial interface, I haven't tried interface to a PI

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[Luca]

Hi Andy,

I try this script https://github.com/martinvw/vbusdecode.

I connected the vbus to one side and the serial pins of Raspberry PI on the other side as shown on the diagram.

I configure the standard serial port of Raspberry at 9600 bps but I'm not able to decode the signal. "cat /dev/serial0 | ./vbusdecode" doesn't work.

Launching "cat /dev/serial0" I'm able to see something and I saved it on a file with a python script but vbusdecode cannot translate the messages.

[Dave Liquorice]

On Thu 25 Feb 2021 19:11, Luca wrote:

> I configure the standard serial port of Raspberry at 9600 bps but I'm
> not able to decode the signal.

There is more to serial comms than just the rate. IIRC the resol data
stream is 9600, 1 start, 1 stop, 8 data, no parity.

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Cheers
Dave