Quantity   Component name
2 × Pololu 37D DC Brushed Motor (50:1) or equivalent https://www.pololu.com/product/1104
1 × Arduino Mega 2560 REV3 https://store.arduino.cc/arduino-mega-2560-rev3
1 × Pololu Dual MC33926 Motor Driver Shield for Arduino https://www.pololu.com/product/2503/resources
2 × Incremental encoder 600 ppr https://www.amazon.co.uk/Wisamic-Incremental-Encoder-Dc5-24v-Voltage/dp/B015GYY7XU
1 × HP 417441-001 Black/Silver PS/2 Mouse (Optional) Can be a joistick or other device. https://www.ebay.co.uk/itm/HP-PS-2-Optical-Scroll-Wheel-Mouse-P-N-417441-001-/163631638747
1 × Laser cut components Acrillic 3, 5 and 10 mm thickness
1 × Screws (M8, M6, M4 and M3 screws)
3 × 8 mm ID , 22 mm OD, 7 mm Thickness Roller Bearings (Skateboard bearings)