Add another circuit board (breadboard) to the system according to Figure 3 and connect the DATA output of the RF circuit to Arduino pin 2, which serves as the software-implemented serial communication ...

Looking for practical Arduino projects? This guide shows how to control a relay from your smartphone using an Arduino Uno — either via Bluetooth or Wi-Fi.

Arduino Micro has some extra leds that it is tricky to programme. Like almost all Arduinos, has a built-in led – the green one on the left in the photo. And it has a pair of yellow leds – called TX ...

Arduino Pin 11 is in reality PORTB Pin3 (PB3) on the ATMega 328 Microcontroller. Figure 1 shows to which Pins on the Arduino Board the 74LS47 display controllers are connected. For example, the ...