This project shows how to connect an LCD screen to an Arduino Mega 2560 and use potentiometers (knobs) to adjust the screen’s contrast and control an extra function, like brightness. Explaining the ...

Using an LCD display is very easy using the I2C communications bus (just two wires plus power). Creating custom digits that take up two lines is also very easy and I show you exactly how to do that ...

Arduino note: After some debugging, I had learned something important about using the I 2 C LCD library: Using ‘lcd.print’ left-justifies the displayed numbers, so when over-writing decreasing numbers ...

In this case it was the <LiquidCrystal_I2C.h> library and a code example for that library by ‘Arduino uno guy’. Adding a couple of analogue reads and some arithmetic, as well as finding more about lcd ...