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 ...

where the full-scale value is determined by the reference voltage supplied to the VCC pin. Here’s a simple sketch for the initial test of the MCP4725 module. This experiment uses Arduino Uno and an ...

[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 ...