arduino Random Numbers
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Syntax
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random(max) //Returns a (long) pseudo-random number between 0 (inclusive) and max (exclusive)
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random(min, max) //Returns a (long) pseudo-random number between min (inclusive) and max (exclusive)
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randomSeed(seed) //Initializes de pseudo-random number generator, causing it to start at a specified point in its sequence.
Parameters
| Parameter | Details |
|---|---|
| min | The minimum possible value (inclusive) to be generated by the random() function. |
| max | The maximum possible value (exclusive) to be generated by the random() function. |
| seed | The seed that will be used to shuffle the random() function. |
Remarks
If randomSeed() is called with a fixed value (eg. randomSeed(5)), the sequence of random numbers generated by the sketch will repeat each time it is run. In most cases, a random seed is preferred, which can be obtained by reading an unconnected analog pin.
