Quantity   Component name
1 × arduino nano clone
1 × DE9 9-pin male D-sub connector
1 × 4.7k resistor
1 × 3D printed case (top and bottom)
4 × #4-40 machine screw 1" long (or M3 x 25mm long) Electronic Components / Misc. Electronic Components
6 × #4-40 hex nut (or M3) Electronic Components / Misc. Electronic Components
2 × #4-40 machine screw 3/8" long (or M3 x 12mm long) Electronic Components / Misc. Electronic Components