Arduino Measurement Projects for Beginners: Arduino Programming basics and Get started guide by Simone bales

Author:Simone bales [bales, Simone]
Language: eng
Format: epub
Published: 2018-10-19T07:00:00+00:00

map()

This function is used to change covert a value in a particular range to other range. for example, if we read a value from analog port A0 is 25, its between a range of 0-1023 in order to cover the value of analog port A0 to a range of 0-255 we use the map function

map(value, fromLow, fromHigh, toLow, toHigh)

// example

analogValue = map(analogValue, 0, 1023, 0, 255);

random()

The random() function returns a semi-random number up to the parameters specified. If no parameters are specified, it will return a value in the signed long data type, with a range of -2,147,483,648 to 2,147,483,647. Its syntax follows:

random(min, max) // "min" minimum possible value expected from the random()

// "max" maximum value expected from the random()

function

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