In arduino the 'delay' instruction is for milliseconds. Does it work for fractions of a ms. e.g 6.5ms? or say 0.5ms? I know you can use microseconds but it happens that milliseconds is more convenient in the sketch.

 

What makes delayMicroseconds() any more difficult to use than delay()?

 

If you google "Arduino delay function" you'll see what variable type the parameter is.

 

What makes delayMicroseconds() any more difficult to use than delay()?

the equation I am using gives a result in milliseconds. the equation would be too complex in microseconds

 

the equation I am using gives a result in milliseconds. the equation would be too complex in microseconds

The difference is a factor of 1000. Show the equation.