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 ...

The Arduino Monitoring and Control System is a simple Arduino-based program designed to read analog sensor values, control digital outputs, and display information on an I2C LCD display. The system ...

After uploading the sketch, open the Arduino Serial Monitor (Tools > Serial Monitor). The sketch will automatically detect the I2C address of the connected LCD module and initialize it. You should see ...

There are so many nice hacks in [Joekutz]’s retro LED display project that it’s hard to know where to start. There’s his DIY LED display controlled by an Arduino UNO. To have some… ...

The analog voltage for the meter can be generated by PWM. The Arduino PWM outputs have a frequency of about 500Hz which means that the pin cycles from 0 to 5V and back to 0 again 500 times a second. A ...

PWM pins work the same way across all Arduino boards, so you don't need to go out of your way to buy a Mega if you already have a board supporting PWM. On the Uno, Nano, and Mini, the PWM pins are ...

Whereas a typical scale would then simply show the resulting number on an LCD display, [Mirko] decided to use a moving coil meter driven by the Arduino’s analog output.

LCD.h is the file including all the fixed constants and the local methods used to manage the display. Also useful to create a good documentation of the display features local methods. You should ...