This is my second line follower robot. It is very cheap. Thanks to the light construction it's faster than previous robot GOOFY. Small motors are directly soldered to the base-copper coated board.
Base is made from FR-4 Base is made from FR-4 copper-clad board. Yes-gears are from dead ASURO (actually I dont think ASURO is a good platform for robotic experiments though…) . Axis which holds gears are made from brass or similar material and are soldered to base like it’s done on ASURO.