![]() ![]() There are plenty of Instructables and other articles on the web that deal with ILI9488 displays, but I couldn’t find any that had exactly what I needed. In particular, the LCDWIKI library we're using has a set of examples for Mega2560. The display (and the code in this Instructable) should also work with any AVR based Arduino (so it has PROGMEM) that provides EEPROM. The Instructable is targeted at Arduino Uno, but Arduino Nano can be used as well – though the shield we have here is a Uno shield, Nano uses the same pins. It’s a cheap device, so it requires quite a firm press and also writes to the screen fairly slowly – our class library makes some effort to draw the smallest amount required for each operation. This Instructable shows how to attach an inexpensive ILI9488-controlled 3.5” LCD touchscreen to Arduino and provides a small class library to make it straightforward to write a simple GUI.ģ.5” display is quite large, but all the touchscreen real estate comes useful if you want to dispense with the pen and just use your fingers. Then I realized I could find a cheap LCD touchscreen and do all of that in software. My first thought was to have a display and a few switches, buttons or possibly thumbwheels. I was working on a device that controlled a couple of circuits and had a few parameters that needed to be set at run time.
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