Quantity   Component name
1 × A4 sheet of 3mm acrylic/plywood Used to laser cut the chassis
10 × 20mm M3 machine screw
4 × 30mm M3 machine screw
17 × M3 nut
2 × Geared DC motor https://www.rapidonline.com/rvfm-1-120-inline-motor-and-gearbox-37-1217
3 × 56mm rubber wheels https://www.rapidonline.com/rvfm-pk-4-56x16mm-abs-model-wheels-37-1320
2 × 75mm axle https://www.rapidonline.com/rvfm-steel-shafts-pack-of-50-2mm-dia-x75mm-37-0350
1 × 9v battery clip
6 × AA battery
1 × 6x AA battery holder https://www.rapidonline.com/trupower-bh-363-1b-6-x-aa-short-battery-holder-18-0120
1 × Arduino
1 × Motor shield
1 × Cable tie (L=200mm W=4.6mm) Used to hold down the battery holder
1 × Electrical Tape
1 × Sensor PCB Design in project files and github
5 × IR LED https://www.rapidonline.com/kingbright-l-934f3bt-3mm-ir-emitting-led-940nm-58-2006
5 × IR phototransistor https://www.rapidonline.com/kingbright-l-93dp3bt-3mm-phototransistor-940nm-30v-58-2005
5 × 330R Resistor
5 × 10K Resistor
1 × 7 pin male header
7 × Male to Female jumper cables
4 × Small cable tie To keep the sensor holders attached to the chassis, and tighten the wheels on if they are loose