Functions To Change PWM Frequency In Arduino UNO & MEGA.

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Change PWM frecuency ARDUINO UNO

Function: setPwmFrequencyUNO(pin,divisor);

Description:

DO NOT MODIFY pin 6 as it is the one on which rely all time functions in Arduino: i.e., if you change the frequency of this pins, function like delay() or millis() will continue to work but at a different timescale (quicker or slower!!!)

For pins 6 and 5: (5 and 6 are together, can not modify individually,same timer)

Divisor Frequency 1 62500 Hz 2 7812.5 Hz 3 976.5625 Hz <--DEFAULT Diecimila bootloader 4 244.140625 Hz 5 61.03515625 Hz

For pins 9, 10, 11 and 3: (9 & 10 and 11 & 3 are together, can not modify individually,same timer)

Divisor Frequency 1 31372.55 Hz 2 3921.16 Hz 3 979.527 Hz 4 490.20 Hz <--DEFAULT Diecimila bootloader 5 244.882 Hz 6 122.55 Hz 7 30.610 Hz

Change PWM frecuency ARDUINO MEGA 2560

Function: setPwmFrequencyMEGA2560(pin,divisior);

This pins are together, can not modify frequency individually,same timmer):

  • pin 13, 4
  • pin 12, 11
  • pin 10, 9
  • pin 5, 3, 2
  • pin 8, 7, 6

For pins 13,4 (DO NOT MODIFY pins 13 & 4 as are tho ones on which rely all time functions in Arduino: i.e., if you change the frequency of this pins, function like delay() or millis() will continue to work but at a different timescale quicker or slower!))

Divisor Frequency 1 62500 Hz 2 7812.5 Hz 3 976.5625 Hz <--DEFAULT Diecimila bootloader 4 244.140625 Hz 5 61.03515625 Hz

For pins 2 to 13 EXCEPT 13,4: Divisor Frequency

1 31372.55 Hz 2 3921.16 Hz 3 490.20 Hz <--DEFAULT Diecimila bootloader 4 122.55 Hz 5 30.610 Hz

Tag » Arduino Mega 2560 Pwm Timers