Quantity   Component name
4 × stepper motor http://www.icstation.com/product_info.php?products_id=2535
4 × wheel http://www.icstation.com/product_info.php?products_id=2700
1 × motor fixed block
1 × 100x213x5mm perspex sheet
1 × 100x213x5mm perspex sheet
1 × L298N driver board http://www.icstation.com/product_info.php?products_id=2540
1 × Arduino uno 328 controller http://www.icstation.com/product_info.php?products_id=2319
1 × Arduino sensor shield V5 http://www.icstation.com/product_info.php?products_id=1535