DIY a true music box that can play for my girlfriend,engrave circuit boards with F1 Ultra, paint and cut boards with M1 Ultra.
1:100X100X0.8mm double sided copper plate X1; 2:1/4W metal film resistance 10k X8; 3:1/4W metal film resistance 1k X1; 4:Passive buzzer X1; 5:IN4148 diode X1; 6:Button X8; 7:Button hat X8; 8:SS8050 triode X1; 9:Arduino nano X1; 10:6X6X24mm Copper column X 4; 11:M4X12 screw X2; 12:M4X6 screw X6; 13:300X300X3mm basswood X2;