Touch has transformed our cellphones in the past two years, but recent months have seen the spread of button-free screens into just about every corner of gadget land.

Using Arduino’s recently introduced Giga R1 WiFi CPU board and need a human interface? The Giga Display Shield (plug-in board) might fit the bill. It adds a 3.97inch 480 x 800 RGB touchscreen, digital ...

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.