This is an Arduino library that enables you attach an interrupt to any pin of Arduino Uno, Nano, Mini and other 328-based boards. The Arduino attachInterrupt() function only allows pines 2 & ~3.

#define ifpin(p,what,ifnot) (((p) >= 0 && (p) < NUM_DIGITAL_PINS) ? (what) : (ifnot)) #define digitalPinHasPWM(p) ifpin(p,pgm_read_byte(digital_pin_to_timer_PGM + (p ...

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 project, one that has been on the back ...

There are easy ways of getting more I/O pins for any project; shift registers, I2C expanders, or ADCs will give you plenty of pins for whatever project you have in mind. All these require extra ...

There are two kinds of people in the world (and, no, this isn’t a binary joke). People who love the Arduino, and people who hate it. If you’ve ever tried to use a standard prototype board to mount on ...

Components required to build a digital meter are simple and can be easily found in your local store; the complete list of components is given below. The complete schematic diagram of the Arduino ...

My perennials always died because I watered them too little or too much, or put them somewhere too dark or too hot. Recently I vowed to keep my plants alive, so I turned to Arduino. I'd been looking ...