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 ...

We might think that an AVR microcontroller – e.g. the ATMega328p adopted by the Arduino UNO boards – has the sufficient number of pins to manage an alphanumeric LCD. In a complex industrial machine ...

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 ...