Each of the 14 digital pins on the Arduino Uno can be used as an input or output, using pinMode(), digitalWrite(), and digitalRead() functions. They operate at 5 volts. Each pin can provide or receive ...

The only trick is that you’ll first need to re-flash the existing ISP firmware with one that ... you have essentially an Arduino with limited pinout and two onboard LEDs, but in a nice small ...

Then, chances are you already know what an Arduino is ... notice between the two boards' pinouts are that the Nano has more reset pins (two versus one on the Uno), fewer GND pins (two versus ...

Since the interrupt signal comes from outside the Arduino it is called as external interrupt. Arduino Uno R3 has two external interrupts: int.0 (pin 2) and int.1 (pin 3). While connecting a RT to ...