Have you heard speed controller before? You can turn speed controller into a virtual engine for your toy car made of tongue depressor. It sounds a bit complicated once you watch this tutorial video. Take your time and learn to build a great speed controller -toy car with your 9v. battery. You will see that you also need soldering iron, and some solder to solder your speed controller to your 9v. battery.
Design your toy cars with wheel , and a small motor that you can connect your wheels. You will notice the speed controller knob that you can use to adjust the speed. Words of caution. You need to make sure that your invention not goes into water because your speed controller – toy car can be damaged because it is built from electrical circuit.
Another thing that you need to keep in mind is the size of the car’s board. You want to make the size that fit your speed controller. Your screw driver should help you makes things tight.
You can enjoy your speed controller toy car.
Have fun, guys.
Video Tutorials: