| 1 | Aluminum rod, 1ft, 3/8” diam. | 1 | McMaster-Carr | 8974K24 | 
| 2 | Loop clamp, 3/8” OD | 2 | McMaster-Carr | 3177T11 | 
| 3 | 10-32 machine screws, 3/8” long | 2 | McMaster-Carr | 92196A267 | 
| 4 | mount plate, 1/16” acrylic | 2 | Laser cut |  | 
| 5 | 4-40 machine screws, 5/16” long | 4 | McMaster-Carr | 91249A107 | 
| 6 | 4-40 machine screws, 1/4” long | 16 | McMaster-Carr | 91249A105 | 
| 7 | Cable covers, 1/16” acrylic | 4 | Laser cut |  | 
| 8 | photogate led/sensor pair | 1 | Digikey | 365-1628-ND | 
| 9 | 2-56 machine screws, 5/16” long | 4 | McMaster-Carr | 91249A052 | 
| 10 | RJ11 breakout board | 1 | Gravitech | RJ11-TERM | 
|  | RJ11 6P6C cables, straight, 7ft | 1 | Monoprice | 938 |