We make model with   LED display. We use folder tablet for paper as an base, and diagram millimeter paper. Let us see the schematics and the photo of the Model. We use plane We can tune the angles of servos   ϕ and ψ by means of multy-turn potenriometers 3 and 4 , connected with A0 and A1 Arduino Uno inputs, toggle button 4 for mode switch and one single-turn potentiometer to control the speed in “Auto” mode. Here we use two 4-symbole LED display 7.