Modifications

PWM stand for ''Pulse Width Modulation''.  

PWM stand for ''Pulse Width Modulation''.  

PWM is a method for reducing the average power delivered by an electrical signal. The average voltage that feds the load is controlled by fastly switching on & off the power between supply and load. PWM is abusively named "''Analog Output''" but don't be fooled by this expression, PWM is not a True analog output (like DAC is).

PWM is a method for reducing the average power delivered by an electrical signal. The average voltage that feds the load is controlled by fastly switching on & off the power between supply and load.  

 

{{ambox|text=PWM is abusively named "''Analog Output''" but don't be fooled by this expression, PWM is not a True analog output (like DAC is).}}

[[Fichier:ENG-CANSAT-FEATHER-PICO-pwm-01.png]]

[[Fichier:ENG-CANSAT-FEATHER-PICO-pwm-01.png]]

The onboard LED is tied to the GPIO 25.  

The onboard LED is tied to the GPIO 25. And that GPIO 25 can also be controled with PWM.

We can control its luminosity by setting the duty cycle of a PWM signal.

Thank to PWM we can control the effective luminosity of the LED by setting-up the duty cycle of the PWM signal.

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