1. Bill of Materials

You will need access to a 3D printer and laser cutter to create the parts from the materials.

Structural

Part	Location	Quantity per robot
6mm 12”x12” wood board (craft plywood)	Tower Stand and Rings	1
3mm 12”x12” wood boards (craft plywood)	All other wood parts	3
1.5mm 12”x12” acrylic board	Motor pulleys	1
3D printer material	Center bracket

Part	Location	Quantity per robot	McMaster #
Bearing	Base	1	60355K507
5mm M2 Bolts/Screws	Center of motor pulley	4	92005A019
8mm M2 Bolts/Screws	2 per motor pulley, 2 for gear	10	92005A029
10mm M2 Bolts/Screws		2	92005A033
20mm M2 Bolts/Screws		3	92005A039
25mm M2 Bolts/Screws		3	92000A053
10mm M3 Bolts/Screws	All	24	92005A120
16mm M4 Bolts/Screws		2	92005A226
30mm M4 Bolts/Screws		2	92005A232
M2 nuts		16	90592A075
M3 nuts		19	90592A085
M4 nuts	Base	4	90592A090
40mm M3 Female-Female Standoffs	Base	4	95947A069
#32 rubber bands (3” x 1/8”)	Head	6
150mm string/cable (e.g. fishing line)	Tower	3
350mm string/cable	Head	1
100mm string/cable	Ears	2

Part	Quantity per robot	Link
Dynamixel XL-320	5	http://www.robotis.us/dynamixel-xl-320/
Dynamixel robot cable 3P	1 (any length)	http://www.robotis.us/robot-cable-3p-60mm-10pcs/
Dynamixel robot cable 3P-XL	1 (190mm), 5 (160mm)	http://www.robotis.us/robot-cable-3p-xl-190mm-5pcs/ , http://www.robotis.us/robot-cable-3p-xl-160mm-5pcs/
USB2AX adapter or USB2Dynamixel (or equivalent)	1	http://www.trossenrobotics.com/usb2ax , http://support.robotis.com/en/product/auxdevice/interface/u2d2.htm
5V power supply cable (preferably USB-male on one end)	1	https://www.adafruit.com/product/954