Electronic and Arduino enthusiasts may be interested in a new creation by developer Paul Bartek, who has created an Arduino touchscreen display in the form of the Sunflower Shield.

Capacitive touch sensors are entirely in the domain of DIY, requiring little more than a carefully-chosen conductive surface ...

Using a USB-C phone with Power Delivery is ideal here, as it allows the phone to be powered while also communicating with the Arduino over USB. The RemoteXY app is built specifically for this purpose.