Building and coding a remote-controlled car with BBC: Micro-bit
First, you have to attach the motors to the polystyrene with bands (you should use two bands for each motor so that the motors will not turn round).
Then you have to attach the motor driver and the battery holder to the polystyrene that you have used before by means of bands.
Now you need to connect the battery holder to the motor driver, and the driver board to the motors. You should upload the program in the micro:bit now, because it will be complicated if you do it later.
Finally, place the third wheel in such a way that it helps hold up the car. Then tie the wheel with a band. Do not tighten the wheel too much, it should turn comfortably. Link the micro:bit to the motor driver board. (we have used the inside roll of a Sellotape, but you can use whatever you want, provided that it doesn't block the car)
Now we are going to make the remote control. Take the second block of polystyrene and make two holes in which the micro:bit will be placed. The holes are necessary so that the reset button will not get pressed.
Then you have to attach the battery holders with cable ties and wire them to the micro:bits. Finally, you have to attach the micro:bits to the polystyrene with bands