Arduino Liquid Crystal Displays


Posted on Feb 6, 2014

I had initially planned to do an LCD tutorial a little further down the line, but there was very high demand for it, and I already had a circuit assembled for testing the new LCD that element14 sent me to evaluate. So, this seemed like an appropriate time to roll it out! In this episode, I explain how communication works with most modern LCD char


Arduino Liquid Crystal Displays
Click here to download the full size of the above Circuit.

acter displays, I show the schematics and circuit required to talk to an LCD, and then I demonstrate it working using two demo programs. The first program will create an animated progress bar using custom characters, and the second will leverage I2C and button debouncing knowledge from tutorial 7 and tutorial 2 respectively to create a real time temperature readout in bothCelsiusandFahrenheit. Download the source code, schematics, datasheets, and parts list below!




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