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openHAB and HP printer

Recent openHAB versions come with a new HP Printer Binding, which is a big improvement over the more general IPP Binding for printers.

HP Color LaserJet: Unable to connect to the network

We have a HP Color LaserJet in the office, one of these devices which can do both printing and scanning. The newer versions include a very nice feature “Scan to network folder” - so I did setup options to scan different PDF sizes to all of our laptops. Very convenient!

Until it stopped working a while ago.

Update openHAB Things configuration using Ansible

In my earlier openHAB blog posts I automated the installation of extensions and linking of Channels to Items. Another problem I’m facing is the configuration of items. Again, that’s very easy in the UI - if you are willing to click through the list of Items, and manually do all the steps.

Among other things I’m using the binding-yahooweather and the binding-ipp bindings, and the first one needs configuration before it can work properly. For the second one, it righly discovered a laser printer in our network, but occasionally when openHAB requests the status information, this spins up an internal disk in the printer. Therefore it is feasible to increase the time between checks - it’s just the number of outstanding print jobs anyway. Doesn’t matter if someone reacts 5 or 15 minutes later, if the problem was not discovered instantly.

Papierformat (A4 oder Letter) in einer Ubuntu Installation

Eine standardmäßige Ubuntu Installation ist der Meinung, als Papierformat Letter nutzen zu wollen.