Small box for electronic prototype PCB (20x80 mm), M2x12 screws used for fasten halfes. Actually it is PPM to USB joystick converter described here: http://age.edgate.ru/articles/rc-to-joystick/rc-to-joystick.php In this project i used transparent ABS plastic for top of the box, wich allows to see LED flashing while data transmission. V2 top slightly trimmed and wire cuts removed. Stupid-and-simple SCAD files added for your laughing :-)