Testing 40x4 Arduino display. I decided to make this video because I did not find much info on internet. If you do exactly what I did, it will work. My test was to determine what is the display's layout. It actually works like two seperate 20x2 diplays into 1. Both are controlled indenpendly. If you watch the LCD and code, you will see how that works. This is for my engine monitor. I already have a 20x2 installed but I want to be able to display more engine info so I wanted a bigger screen. Enjoy

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