If you take a look to the circuit scheme published in the Alphanumeric LCD with Shift Register on Arduino you can see that there is the pin number 9 that is NC (not connected). In the shift register ...

The magic of the shift register The shift register is an easy-to-manage component. We will dedicate a series of articles illustrating applications giving us the opportunity to develop circuits using ...

Looking for practical Arduino projects? This guide shows how to control a relay from your smartphone using an Arduino Uno — ...

The new 80-pin connectors on the Portenta Outwardly, the new board doesn’t look far removed from the modern Arduino form factor we’re used to.