UPDATED: I removed all delay(); calls because they were not accurate enough and there was a time drift. Instead now there is a while(); that waits until the required time has passed.

Recently I found here a really cheap LCD shield with buttons for Arduino.

Today it arrived and I made a simple clock program to test it out. It’s little slow when refreshing the screen but it’s perfect for the price.

A really cool application would be to use it together with a Raspberry Pi to execute simple commands and see the status of a small web server.

Here are some pictures, a video and the code for the clock application. It is using the LCDKeypad C++ class which can be found here.