Gather materials. You'll need the following materials to build your robot car. If you're not sure what size each component should be, read over these instructions to get a feel for how they fit together.
Two motors
Two wheels
Arduino microcontroller board (the Arduino Uno is a good choice for beginners)
Motor driver shield or motor driver circuit (found in remote-controlled toy cars)
Battery holder and 6 volts of batteries (e.g. four AA batteries)
Chassis: a sheet of acrylic or plexiglass, about 6.5 x 4.5 inches (16.5 x 11.5cm
Robot cars |How to Build a Robot Car
Attach the wheels and motors to the chassis. Thread each wheel onto one of the motors. Hot glue the motor onto the chassis as follows:Mark two locations near one end of the chassis, opposite each other.
Glue one motor over each location, on the upper side of the chassis. Make sure the wheel hangs over the edge so it can roll along the ground.
Robot cars |How to Build a Robot Car
Glue on the battery holder. Add a dollop of hot glue to the top side of the chassis, between the wheels. Press the battery holder here and let set.
Robot cars |How to Build a Robot Car
Attach the motor driver circuit. Position the motor driver circuit near one side of the chassis, with the wires overhanging the edge.
Robot cars |How to Build a Robot Car
Position the Arduino. Glue the Arduino onto the chassis, tucked opposite the driver circuit. When positioning it, make sure you have access to the socket for plugging the Arduino into the computer.
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