Materials needed for hand-made electric four-wheel drive: popsicles, motors, square batteries, battery buckles, ball bearings, discarded ballpoint pens, switches, wires, soldering irons, soldering tin, electrical tapes, tapes, scissors and hot melt glue gun. Let's take a look at how to easily complete the production of four-wheel drive with friends who like to play electronic technology and small production.

1, we cut the popsicle stick in half, and then cut the ends of the semicircles at both ends of the stick flat. Insert the ball into both ends of the popsicle as shown in the figure.

2. Stick the ball in the popsicle with hot melt adhesive and repeat the above operation.

Then stick the front and rear wheels together with two popsicles to get the basic chassis for making four-wheel drive. In order to prevent the bearing wheel from slipping, we need to stick electrical tape on the surface of each ball bearing.

3. Cut a section of about 2cm from the pen core of the finished ballpoint pen and insert it into the motor shaft, as shown in the figure.

4. The refill is wrapped with adhesive tape or double-sided adhesive tape and stuck on the base of the rear wheel of the four-wheel drive, and the rotating shaft is in contact with the wheel. The adhesive tape increases the diameter of the rotating shaft, so that once the motor rotates, it can drive the load-bearing wheel of the rear wheel to rotate.

5. Connect the battery buckle and switch in series.

6. We will stick the battery buckle between the two motors like this, and then fix the wires and switches in the four-wheel drive car.

7. Finally, install a new square battery on the battery buckle. At this time, you only need to gently pull the switch, and you can see the self-made electric four-wheel drive moving quickly on the ground.