Interactive door sign [Kniwwelino Documentation]

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===== Interactive door sign =====
An interactive door sign with external LEDs to show if you are currently welcoming visitors in your room. Three LEDs of different colors are connected to the Kniwwelino and attached behind tracing paper with different messages. By pressing button A, you can navigate through the LEDs and by this, select one of the areas with a message. By pressing button B, you can switch off the LEDs.

{{:en:doorsign.jpg?direct&400|}}{{:en:doorsign2.jpg?direct&400|}}

==== Needed materials ====
  * 1 Kniwwelino
  * 1 Micro USB cable
  * 1 Powerbank or USB plug
  * 3 LEDs in red, green and blue
  * Silicone wire in black and red
  * Small screws M2 or M2.5
  * Adhesive tape
  * 1 piece of yellow cellular rubber 16x12cm
  * 1 piece of white cardboard 16x12cm
  * Small pieces of cellular rubber of different colors (to cut the letters of your name)
  * 1 piece of tracing paper
  * Scissors
  * Cutter
  * Duct tape
  * Pens


==== Crafting ====

=== Model ===
The model for the door sign is available here: {{ :en:instructions:model_doorsign.pdf |}}

=== Instructions ===
  * Use the model A to cut with the scissor and the cutter the enclosing made of cellular rubber
  * Cut the tracing paper using model B and stick it to the back of the cellular rubber
  * Cut the two slots and insert the Kniwwelino

{{:en:instructions:doorsigncraft0.jpg?direct&600|}}

  * Turn it around and write your messages on the front
  * Follow the instructions on [[en:extensions:extled|]] to add the three external LEDs to the Kniwwelino with silicon wire. 

{{:en:instructions:doorsigncraft1.jpg?direct&600|}} 

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  * Attach the Micro USB cable, arrange the LEDs and fix them with duct tape. 

{{:en:instructions:doorsigncraft2.jpg?direct&600|}} 

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  * Cut the outline of the door sign made of white cardboard and stick it to the back of the doorsign.

{{:en:instructions:doorsigncraft3.jpg?direct&600|}} 

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  * Cut the letters of your name with cellular rubber of different colors and stick it to the front.

{{:en:instructions:doorsigncraft4.jpg?direct&600|}} \\

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==== Programming ====

Open project in [[https://code.kniwwelino.lu/?xml=examples/Room_Sign_LEDs_v4.xml|KniwwelinoBlockly]]

[[https://code.kniwwelino.lu/?xml=examples/Room_Sign_LEDs_v4.xml|{{:en:instructions:doorsign_solutiona.png?direct|}}]]
[[https://code.kniwwelino.lu/?xml=examples/Room_Sign_LEDs_v4.xml|{{:en:instructions:doorsign_solutionb.png?direct|}}]]