====== Christmas decoration ======
A simple Christmas decoration that flashes in many colors.
{{ :fr:instructions:dsc0863.jpg?400 |}}
For that you will have to use the buttons and the LED of color.

===== Programming =====
Here's how to build an angel or a Christmas tree step by step for Christmas. Use the displayed blocks and put them in the correct order and test your code by clicking on  {{:en:instructions:play.png?direct&30|}}. 

==== Step 1: Turn on the LED in green ====
If I press the button A turns on the LED in green.

Use the following blocks and add them in Kniwwelino My program:

{{:en:instructions:wristband03.png?200|}}  {{:en:programmingblocks:led_1.png?200|}}

You can test your code.

==== Step 2: Change the color when you press the B button ====
If I press the B button then turn on the LED in another color.

Add the following blocks below what you already did in step 1:

{{:en:programmingblocks:wristband04.png?200|}} {{:en:programmingblocks:led_colors.png?200|}}


==== Step 3: Turn off the LED ====
Turn off the LED if buttons A & B are clicked at the same time.

{{:en:programmingblocks:aandb.png?200|}} {{:en:programmingblocks:led_2.png?200|}}



==== Solution ====
  * <color #ed1c24>Open the solution   [[https://code.kniwwelino.lu/?lang=en&xml=examples/Xmas.xml|KniwwelinoBlockly]] </color>
  * [[https://doku.kniwwelino.lu/_media/en/instructions/pe_xmas_decoration_en_instruction.pdf|Download version]]
{{:en:instructions:xmas_decoration_solution1_en.png?400|}}

===== Crafting =====

==== Material ====

  * 1 Kniwwelino
  * 1 USB cable
  * 1 elastic 
  * 1 ice cream stick 
  * Tape
  * Scissors
  * Glue
  * 1 sheet of A4 paper in white or colored
  * [optional] 2 other sheets of paper colors
  * [optional] glitter, markers, stickers, punch, ... all material needed to decorate
  * [optional] 1 sheet of tracing paper
  * [optional] 1 external battery

==== Model ====

[[ https://doku.kniwwelino.lu/_media/fr/instructions/templatexmastreeangel_3.pdf |Model]]

==== Instructions ====
  - Download the template and print it.
  -  Choose the model of your choice: angel, single fir or three-story fir.
  - Follow [[https://doku.kniwwelino.lu/_media/en/instructions/pe_xmas_decoration_en_instruction.pdf| downloadable instructions]]

{{:fr:instructions:dsc0863.jpg?400|Engel}} 

{{:fr:instructions:dsc0842.jpg?200|}} {{:fr:instructions:dsc0846.jpg?200|}} {{:fr:instructions:dsc0848.jpg?200|}} {{:fr:instructions:dsc0849.jpg?200|}}

{{:fr:instructions:dsc0891.jpg?400|Einzeltanne }} {{:fr:instructions:dsc0902.jpg?400|Dreistöckige Tanne}}

===== Your turn! =====
  * You can play on the blinking effects of the LED.
{{:en:programmingblocks:led_effects.png?200|}}

  * You can play on the brightness of the LED.

{{:en:programmingblocks:led_6.png?200|}}

  * You can use the time to add an effect on the LED and make it change color.
{{:en:programmingblocks:led_1.png?200|}}

{{:en:programmingblocks:time_1.png?200|}}

{{:en:programmingblocks:led_colors.png?200|}}

{{:en:programmingblocks:time_1.png?200|}}

  * You can also use the loops to repeat your effect 10 times in a row.

{{:en:programmingblocks:loops_1.png?200|}}

==== Solution ====

Downloadable version [[https://code.kniwwelino.lu/?xml=examples/XmasDecoration_complete.xml|in Blockly]].