Bill of materials

Almost everything, if not everything, can be acquired from Aliexpress. I won't be sharing links since often they break in Aliexpress, so I'll just share reference pictures and a description for you to search them yourself.

Reference Image	Description	Quantity
	Arduino Pro Micro or Leonardo	1
	MCP23017 16 I/O port expander board Alternatively, you can use shift registers instead	4
	74HC165 shift register	8
	XY flat axis joystick	1
	12mm push buttons (color of your choice, I personally like to use white)	10
	3 pin 3 position MOM OFF MOM short flat stem switches (these can be tricky to find sometimes)	4
	3 pin 3 position ON OFF ON short flat stem switches	3
	10x10x10 DIP switches (optional PCB available to download)	6
	6x6x15 tactile switch	2
	Mini limit switch	2
	6x6x4.3 tactile switch	2
	3 position rotary switch. SR16 or RS1010 with 3 throws (1 or alternatively 2 Pole 3 in Aliexpress)	1
	Linear potentiometer. WH148 or RK097. Any value in the thousands should do. I usually use 10K	2
	6x6x7 led tactile switch	9 with green leds and 12 empty ones if backlight is desired. Otherwise, 21 empty
	3mm green leds (optional, only if backlight is desired)	9
	220 ohm resistors (optional, only if backlight is desired)	6
	8" LCD HJ080IA (optional)	1