For years, there has been a clear distinction between the Arduino ... pins. Then there are the pins that double as communication pins. On the Nano, you can access one UART (pins D0 and D1 as RX ...

To link a standard 16×2 LCD directly with the microcontroller, for instance Arduino, you would need atleast 6 I/O pins to talk to the LCD. However, if you use an LCD module with I2C interface, you ...

While the Alphanumeric LCD project for Arduino hardware aims to be simple, cheap and save as much as possible the available I/O ports (only three pins are used), in the same way the software to manage ...

[Tobie’s] part of the hack is to use an Arduino and a few buttons as the controller. It’s easy to set up and we think the breadboarded controller approximates the size and weight of an LCD ...