Note: Divide the PWM frequency by 2 for an 8MHz clock, multiply by 1.25 for a 20MHz clock. For Arduino Mega1280, Mega2560, MegaADK, Spider or any other board using ATmega1280 or ATmega2560 ———————————————- Set PWM frequency for D4 & D13 —————————— TCCR0B = TCCR0B & B11111000 | B00000001; set timer 0 divisor to 1 for PWM frequency of 62500.00 Hz TCCR0B = TCCR0B & B11111000 | B00000010; set timer 0 divisor to 8 for PWM frequency of 7812.50 Hz TCCR0B = TCCR0B & B11111000 | B00000011; set timer 0 divisor to 64 for PWM frequency of 976.56 Hz TCCR0B = TCCR0B & B11111000 | B00000100; set timer 0 divisor to 256 for PWM frequency of 244.14 Hz TCCR0B = TCCR0B & B11111000 | B00000101; set timer 0 divisor to 1024 for PWM frequency of 61.04 Hz

———————————————- Set PWM frequency for D11 & D12 —————————– TCCR1B = TCCR1B & B11111000 | B00000001; set timer 1 divisor to 1 for PWM frequency of 31372.55 Hz TCCR1B = TCCR1B & B11111000 | B00000010; set timer 1 divisor to 8 for PWM frequency of 3921.16 Hz TCCR1B = TCCR1B & B11111000 | B00000011; set timer 1 divisor to 64 for PWM frequency of 490.20 Hz TCCR1B = TCCR1B & B11111000 | B00000100; set timer 1 divisor to 256 for PWM frequency of 122.55 Hz TCCR1B = TCCR1B & B11111000 | B00000101; set timer 1 divisor to 1024 for PWM frequency of 30.64 Hz

———————————————- Set PWM frequency for D9 & D10 —————————— TCCR2B = TCCR2B & B11111000 | B00000001; set timer 2 divisor to 1 for PWM frequency of 31372.55 Hz TCCR2B = TCCR2B & B11111000 | B00000010; set timer 2 divisor to 8 for PWM frequency of 3921.16 Hz TCCR2B = TCCR2B & B11111000 | B00000011; set timer 2 divisor to 32 for PWM frequency of 980.39 Hz TCCR2B = TCCR2B & B11111000 | B00000100; set timer 2 divisor to 64 for PWM frequency of 490.20 Hz TCCR2B = TCCR2B & B11111000 | B00000101; set timer 2 divisor to 128 for PWM frequency of 245.10 Hz TCCR2B = TCCR2B & B11111000 | B00000110; set timer 2 divisor to 256 for PWM frequency of 122.55 Hz TCCR2B = TCCR2B & B11111000 | B00000111; set timer 2 divisor to 1024 for PWM frequency of 30.64 Hz

———————————————- Set PWM frequency for D2, D3 & D5 ————————— TCCR3B = TCCR3B & B11111000 | B00000001; set timer 3 divisor to 1 for PWM frequency of 31372.55 Hz TCCR3B = TCCR3B & B11111000 | B00000010; set timer 3 divisor to 8 for PWM frequency of 3921.16 Hz TCCR3B = TCCR3B & B11111000 | B00000011; set timer 3 divisor to 64 for PWM frequency of 490.20 Hz TCCR3B = TCCR3B & B11111000 | B00000100; set timer 3 divisor to 256 for PWM frequency of 122.55 Hz TCCR3B = TCCR3B & B11111000 | B00000101; set timer 3 divisor to 1024 for PWM frequency of 30.64 Hz

———————————————- Set PWM frequency for D6, D7 & D8 ————————— TCCR4B = TCCR4B & B11111000 | B00000001; set timer 4 divisor to 1 for PWM frequency of 31372.55 Hz TCCR4B = TCCR4B & B11111000 | B00000010; set timer 4 divisor to 8 for PWM frequency of 3921.16 Hz TCCR4B = TCCR4B & B11111000 | B00000011; set timer 4 divisor to 64 for PWM frequency of 490.20 Hz TCCR4B = TCCR4B & B11111000 | B00000100; set timer 4 divisor to 256 for PWM frequency of 122.55 Hz TCCR4B = TCCR4B & B11111000 | B00000101; set timer 4 divisor to 1024 for PWM frequency of 30.64 Hz

———————————————- Set PWM frequency for D44, D45 & D46 ———————— TCCR5B = TCCR5B & B11111000 | B00000001; set timer 5 divisor to 1 for PWM frequency of 31372.55 Hz TCCR5B = TCCR5B & B11111000 | B00000010; set timer 5 divisor to 8 for PWM frequency of 3921.16 Hz TCCR5B = TCCR5B & B11111000 | B00000011; set timer 5 divisor to 64 for PWM frequency of 490.20 Hz TCCR5B = TCCR5B & B11111000 | B00000100; set timer 5 divisor to 256 for PWM frequency of 122.55 Hz TCCR5B = TCCR5B & B11111000 | B00000101; set timer 5 divisor to 1024 for PWM frequency of 30.64 Hz