luxy:
If i use line "TCCR0B = TCCR0B & 0b11111000 | 0b001;" it change PWM frequency on port D0 and D1 of ATtiny85 (i read that on forum). What if i want to change PWM frequency on port D3 and D4?I tried with line "TCCR1B = TCCR1B & 0b11111000 | 0b001;" but it doesn't work. On ATmega328 line TCCR0B change PWM on port 5 and 6, TCCR1B on port 9 and 10 and TCCR2B on port 11 and 3, but not with ATtiny85.
So, how to change PWM on port D3 and D4?
Tiny85 doesn't have the same timers as a Mega328.
Look for TCCR1 in the datasheet.