Dial Indicator with Input Knob (Easy Home Cockpit Project)

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Material:

• 56mm disc out of a sheet of thin cardboard. Print the background of the indicator that you want on it.
• 1x potentiometer
• 1x Servomotor (SG90, I got it out of an Arduino starter kit) 
• 2mm thick Plexiglas, 60mm diameter
• optional: 4x LED, 3mm diameter for back lighting. In this case, the part "Indicator_Backlit" must be printed with transparent material.
• optional: 1x LED, 5mm diameter for the flag/warning
• optional: 1x Digit 7 segment display ref 5161AS (I got it out of an Arduino starter kit) 

When combined with one another models of this collection mimic the functionalities of the instrument panels found in most aircraft (helicopter, fighter jets and even space ships).