Ускоряем работу Arduino

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https://arduinodiy.wordpress.com/201...er-interrupts/



Timer0 is an 8-bit timer, meaning its counter register can record a maximum value of 255 (the same as an unsigned 8-bit byte).
Timer0 is used by native Arduino timing functions such as delay() and millis(), so unless you know what you are doing, timer 0 is best left alone.

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Timer1 is a 16-bit timer, with a maximum counter value of 65535 (an unsigned 16-bit integer).
The Arduino Servo library uses this timer, so keep that in mind if you use this timer in your projects.

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Timer2 is an 8-bit timer that is very similar to Timer0. It is used by the Arduino tone() function.