Multipurpose Arduino box with TFT display

thingiverse

This is an enclosure for Arduino Uno featuring an integrated 2-inch or 3.5-inch touchscreen display. You can attach a connector to the back panel, which provides room for powering the unit with three rechargeable AAAA cells or four A-size AA batteries. I chose two recycled lithium-ion cells from old smartphones as the battery in my initial prototype. The Arduino code is still a work-in-progress and, admittedly, not written by an expert coder. As such, it can probably be improved with further refinements. Keep in mind that similar TFT displays often require adjustments to their calibration parameters. I've personally purchased three units from the same supplier and noticed significant variations among them each time.