| 
								Air Hockey Table
							 | 40 Inch | $34.74 | ✖ | Our table was “Used - Like New” from Amazon. Any air hockey
								table the same size should work with some adaptation of the
								gearbox mounting. | 
						
							| 
									Stepper Motors
								 | NEMA 23 1.26Nm | $51.98 | ✖ | Any NEMA 23 size stepper motors should work here as long as
								they have a reasonable amount of torque. | 
						
							| 
									Stepper Drivers
								 | TB6600 | $25.98 | ✖ | Any stepper drivers with sufficient current capability should
								work. | 
						
							| 
									Arduino Uno
								 |  | $27.60 | ✔ |  | 
						
							| 
									Power Supply
								 | 24V 10A | $22.99 | ✖ | We ended up switching to a bench power supply that only
								provided 18V, but this power supply is more compact and worked
								fine. | 
						
							| Gearbox Aluminum Shaft Stock | ¼” x 12” 6061 | $9.99 | ✖ |  | 
						
							| Gearbox MDF Stock | 12" x 12" x ¼” | $10 | ✔ |  | 
						
							| Gearbox Bearings | FR6ZZ | $8.99 | ✖ |  | 
						
							| 
									Gearbox Spider Couplings
								 | 6.35mm | $11.99 | ✖ | These get split in half and use to connect the 3D printed
								gears to the stepper motors. One half should be the same
								diameter as the stepper motor output shafts. | 
						
							| Gearbox 3D prints | PETG | $5.00 | ✔ |  | 
						
							| Arm Aluminum Stock | 1/2" Shaft Diameter, 3/4" OD, 1/16" Thick | $19.98 | ✔ |  | 
						
							| Arm Thrust Bearings | 1/2" Shaft Diameter, 3/4" OD, 1/16" Thick | $3.48 | ✖ |  | 
						
							| 
									Arm Radial Bearings
								 | FR8ZZ | $9.49 | ✖ |  | 
						
							| 
									Arm Joint Aluminum Stock
								 | 5/8" x 6” 6061 | $2.27 | ✖ |  | 
						
							| Arm 3D Prints | PLA | $2.50 | ✔ |  | 
						
							| 
									High Speed Webcam
								 | 640x400 210FPS Monochrome Camera | $29.53 | ✖ | This camera worked very well for us - there are many
								similar options on Aliexpress with slightly different
								specifications. We mainly chose it due to the global shutter,
								high frame rate modes, and good price point. | 
						
							| Camera Mount Wood |  | $5.00 | ✔ | We constructed our camera mount from scraps found in the Olin
								shop, but really any material should work here. | 
						
							| Camera Mount 3D Prints |  | $1.75 | ✔ |  | 
						
							| 
									Limit Switches
								 |  | $1.66 | ✔ | We got these for free from previous PIE projects. Any limit
								switches should work if mounts are designed for them. | 
						
							| 
									Electronics Enclosure Acrylic Stock
								 | 24”x18”x1/8” | $17.85 | ✔ |  | 
						
							| Total |  | $287.77 |  |  |