Hi all,

a few days ago I connected an airquality sensor with 0-10V output to the analog input of the Unipi board (V1.1).
In FHEM I'm getting values like "408421.875".

I have no idea how to convert these values to a standard voltage value like 4,5 V.
Can anybody help me?

Regards,

Peter

Hi all,

a few days ago I connected an airquality sensor with 0-10V output to the analog input of the Unipi board (V1.1).
In FHEM I'm getting values like "408421.875".

I have no idea how to convert these values to a standard voltage value like 4,5 V.
Can anybody help me?

Regards,

Peter

In the new FHEM image v 0.3 I don't get ??? for the digital inputs anymore.
Seems this was fixed as well.

With the new FHEM image v 0.3 the analog output works great.
Before I had some problems - I think mainly based on missing privileges.

I had the same situation with 3 digital inputs showing "???" instead of light bulbs.
Maybe this is caused when there is no reading available for these inputs.

So I went into the affected inputs and pressed the set (read value) button.
As soon as there was a reading, the "???" turned into a light bulb.

Since that everything is allright regarding the digital inputs, also after rebooting.

The UniPi board is fully compatible with RPI2. I'm also using this combination.
See here: http://unipi.technology/raspberry-pi-model-2-in-stock/

You will need the same cable as for the B+ model. From model B to B+ the number of GPIO pins was increased from 26 to 40.

But it seems you don't need to worry about this anymore because UniPi simplified the order process by adding "RPi 2 Model B" as cable type.