[Trackball] Bill of Materials

Component	Qt	Description	Price	Provider	Notes
Billiard ball	1	Standard billiard ball – if possible, solid color	$5.95 / 1u	Amazon
Metal ball	12	1cm diameter metal balls	$5.38 / 25u	Amazon
Rotary encoder	3	24 pulse rotary encoder	$4.50 / 1u	Adafruit
Microcontroller	1	Arduino Nano 33 IoT	$21.00 / 1u	Amazon
Pushbutton	3	Mini Soft Touch Push-button Switches (6mm square)	$1.95 / 10u	Adafruit
Proto board	2	Tiny solderable protoboard for buttons	$8.99 / 6u	Amazon
LED strip	20cm	RGB LED strip – 60 LEDs/meter	$25.00 / 1m	Adafruit
Rubber feet	8	Little rubber bumper feet	$0.95 / 4u	Adafruit
Gear	4	Gears from rollers to encoders		3D print?
Ball bearing	8	uxcell 681XZZ Ball Bearing 1.5x4x2mm	$9.89 / 10u	Amazon
Rod	4	Metal rod 6cm x 1,5mm	$5.49	Amazon
Roller	4	Cylinder piece with a 1,5mm hole			would heat shrink do it?
L bracket	4	Metal L brackets with 2 mm holes	$0.68 / 1u	McMaster-Carr	to support the dowels
Acrylic	1	12”x12” Acrylic sheet	$12.00 / 1u	Canal Plastic	color TBD
Wood sheet	1	30x30x0,3cm laserable wood			for bottom, so that it’s easier to attach everything else
Standoff	8	Long standoffs			enclosure corners and ball support
Standoff	2	Shorter standoffs			button support
Screws	20	Screws for standoffs