PinChangeInterrupt for a lot of pins Rising, Falling or Change detection for every pin separately Usable on a lot Arduino compatible boards Implementation is fast, compact and resource friendly ...

Arduino-compatible ATtinys with more pins Having had such quick success making a microcontroller project using an 8pin ATtiny85 and programming it with Arduino, I though I would try a more elaborate ...

Not long after [CulinarilySpeaking] got into the Arduino game, he began to want more IO pins and a larger program space for more ambitious projects. This, of course, led him down the path towards t… ...