IFD:Interaktive Elektronik 2012/Arduino programming beginners: Difference between revisions

IFD:Interaktive Elektronik 2012/Arduino programming beginners (view source)

157 bytes added , 10 May 2012

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 === using variables ===
-variables are a place to store numbers in the memory. They make life easier in many cases:
+variables are a place to store numbers in the memory of a computer. They make life for us now:
-replace pin number by a variable - changing pin is much less tedious and cumbersome.
+replace pin number by a variable - changing the pin is much less tedious and cumbersome.
-replace delay by a variable - doesn't seem useful first. but:
+replacing the delay by a variable - only change it once.
 Changing variables during runtime (while the program is running) is also possible:
+'''Most simple example of changing a variable:'''
+<source lang="c">
+myVariable = 100;
+delay(myVariable);
+myVariable = 1000;
+delay(myVariable);
+</source>
 '''Having some random fun'''
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 <source lang="c"> delaytime = 200 </source>
 Now the value of delaytime is 200.
 === a new kind of output: ''analogWrite'' ===