Servos jitter when serial reads

[kivig]

How are you going to communicate with the Attiny85? Via serial? You haven't really solved the problem.

If you use the hardware timers though it could be OK (hardware PWM). The servo library is designed, as far as I can see, to support any pin, which is why they intervene with an interrupt handler rather than using hardware PWM. You have 6 PWM outputs on the Atmega328, so unless you need more than 6 servos, the main chip should be able to do it, with careful use of timers.

Guess I could write something like really primitive communication "protocol" through digitalWrite - even awfully wasteful transfer of six bytes shouldn't take long compared to how much time is already eaten by serial @2400.
But if it is possible to drive six servos as you say that should be a better solution Guess I'll study it. Thanks!