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#04. Fractional Numbers and PWM

Note This is a web-version of a tutorial chapter embedded right into the XOD IDE. To get a better learning experience we recommend to install the desktop IDE or start the browser-based IDE, and you’ll see the same tutorial there.

XOD uses fractional numbers (also known as floats) extensively. For example, the LUM pin on the led node can take values from 0 to 1. 0 means absolute minimum of LED brightness. Basically, it means that LED is off. 1 means full brightness. You can control LED brightness by setting fractional values on LUM pin.

Test circuit

Note The circuit is the same as for the previous lesson.


↓ Download as a Fritzing project


Use Inspector to enter a value with floating point. The following notations are supported:

  • 0.4
  • .4 (same as 0.4)
  • 4e-6 (scientific, 4×10-6 = 0.000004)


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