Libraries for Arduino

• Timer1? - Pwm, interrupt and stopwatch utilities for 16bit timer1.
• PCInt? - simple pin change interrupts
• PinChangeInt - Preformance and size improved revision to PCInt
• MsTimer2 - - library to use Timer2 on milliseconds.
• FlexiTimer2 - library to use Timer2 with a configurable interval (more granular resolution than MsTimer2's milliseconds are possible).
• Metro - Implementation of recurring timed events like blinking LEDs or servo motor control