Quantity   Component name
1 × Raspberry Pi Zero
1 × 5V Stepper Motor 28BYJ-48 + DriveModule Board ULN2003 ebay
4 × Rubber Car Wheels 47 * 21mm http://www.ebay.com/itm/391168286848?_trksid=p2057872.m2749.l2649&var=660502812830&ssPageName=STRK%3AMEBIDX%3AIT
1 × 5V Voltage Regulator http://www.ebay.com/itm/280952879925?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
2 × Shaft Axis Φ2mm * 60mm http://www.ebay.com/itm/281013104554?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
1 × Plastic Model Gears http://www.ebay.com/itm/391243819962?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
1 × Micro USB OTG Adapter http://www.amazon.com/Adapter-LDesign%C2%AE-Android-Smartphone-Samsung/dp/B015XA3W0G?ie=UTF8&psc=1&redirect=true&ref_=oh_aui_detailpage_o03_s00
1 × EW-7811Un Wi-Fi USB Adapter, Nano Size http://www.amazon.com/Edimax-EW-7811Un-150Mbps-Raspberry-Supports/dp/B003MTTJOY?ie=UTF8&psc=1&redirect=true&ref_=oh_aui_detailpage_o02_s00
2 × DC 12V Micro Motors http://www.amazon.com/13500-Rotary-Speed-Micro-Motor/dp/B00S50K85O?ie=UTF8&psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00
1 × 12V Voltage Regulator