Hi!,
I'm not an expert but, as stated here , to be able to issue the command
<code>sudo apt-add-repository ppa:mutlaqja/ppa</code>
on Raspbian, you need to install the package software-properties-common beforehand with
<code>sudo apt-get install software-properties-common</code>

Hope it's not too late!

May I ask you how you got Nexus DSC / ServoCAT setup to talk to Indi / Ekos?
I've been reading Nexus DSC is LX200 compatible, but I would like to double check before upgrading my setup.

Thx in advance 

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