The pH Level Monitor project uses 4D Systems' gen4-uLCD-50DT to display the pH level of a certain substance. It can also be used to monitor the acidity of your aquarium or pond.

In this project, the pH level can be automatically or manually read when you press the buttons provided on the graphical user interface of the gen4 HMI Display. It is programmed using the Visi Environment of Workshop 4 IDE.