I built a robot ukulele (it plays itself)

In this video I design and build a robot ukulele before getting it to play some songs. Parts list: Disclaimer these are affiliate links Ukulele Arduino Uno L293D Motor Driver Shield 12V Solenoid Nema 17 stepper TMC2208 stepper driver Mini breadboard 150mm MGN9B linear rail w/ block GT2 6mm timing belt Pulley and idler Micro servo 12V 10A power supply Solid core wire (22 AWG) M3 nuts and bolts