Drawing machine Parts General MDF cutouts 4 x M4-60 3 x M4-20 15 x M4 nuts 4 x M3 10mm 4 x M3 Nuts Breadboard Jumper wires 4 x zip ties 9V battery Ball pen Electronics Arduino Pro Micro Micro Servo ZC-A0591 Stepper Driver 28BYJ-48 Stepper Photodiode 10k resistor