For the design of this project I used the FreeCAD software and the parts were practically all printed on my Prusa i3 printer. The material used was PLA black and red. To make the toucth screen trigger I used two metal parts wrapped in aluminum connected to the GND of the Smartphone. I used two buttons for this control. The clamp part was not entirely my design. It was a remix. You can find these parts here: https://www.youmagine.com/designs/clamp-fully-printable-remix-by-mindscraper https://youtu.be/jORnJCkHlxE