SharePort also allows (trusted) friends on my network to fire off files to a printer connected to my router via USB. The beauty of SharePort is that it knows when a print job is finished and automatically disconnects users from the USB-attached printer.
The pins on the Arduino can be configured as either inputs or outputs. This document explains the functioning of the pins in those modes. While the title of this document refers to digital pins, it is important to note that vast majority of Arduino (Atmega) analog pins, may be configured, and used, in exactly the same manner as digital pins.
Arduino Timer Interrupts. Arduino Timer Interrupts. When you want things to happen at a regular time interval, it can be easy to go for the delay() function. But this just pauses the program for a specific time period which is wasteful especially if you need to do other processing in the meantime. This is where timers and interrupts come in to play. The Arduino UNO has three timers. Timer0 - An 8 bit timer used by Arduino functions delay(), millis() and micros().