How to assemble the simplest electric motor at home

We continue to open for you new electronic homemade and today we’ll talk about how to make a fully working model of an electric motor from a battery, copper wire and magnet. Such a mock-up can be used as a craft on a table by a home electrician, as a good example to explain the principles of operation of such mechanisms, and simply as a funny trinket that can be presented to a loved one. It is quite simple to make it and for everyone, you can assemble it together with your child, which will be great entertainment. Further we will provide detailed instructions with photos and video examples so that the assembly of the simplest motor is understandable and affordable!

Step 1 - Preparing Materials

To make the simplest magnetic motor with your own hands, you will need the following materials at hand:

  • 1.5 Volt battery, it is better to choose powerful options like Duracell or Energizer;
    Photo Battery 1.5V
  • holder with contacts for a finger battery (as in the photo below), you can take it under one battery, however, the design for two seats is more stable;
    Contact holder
  • a small magnet, preferably powerful - neodymium;
  • a piece of necessarily enameled copper wire (in varnish insulation, such a wire has a slightly yellowish color), 1 mm in diameter (no more than 80 cm will be required for assembly);
  • 30 cm uninsulated single-core wire, 1 mm in diameter.

Having prepared all the necessary materials, you can proceed to the assembly of a simple electric motor that runs on just one battery. It’s not difficult to make a small electric motor at home, which is what you’ll see now!

Step 2 - Putting Homemade

So, so that the instructions are understandable for you, we’ll better consider it in stages with pictures that will help visually understand the assembly principle.

  1. From enameled copper wire you need to make a motor coil, which will be rotor mechanism. To do this, we recommend that you wrap the wire around the battery, leaving about 5 cm of length on both sides. A coil of 15-20 turns of copper wire is considered good, but you can experiment and find a better value for the best performance.
  2. Carefully remove the coil from the battery, and wrap the loose ends at least twice, as shown in the photo. This is necessary so that the winding does not fall apart from rotation.
    Homemade Motor Part
  3. With a sharp knife, gently strip the enamel from the ends of the wire to a pale pink metallic color. This stage must be performed with great care, since even a small amount of varnish can interfere with the contact, and homemade work does not work.
  4. Make a holder for the rotor. All that is needed is to take an uninsulated copper wire, bite off two even sections of 10 cm from it and wrap them several times around a thin nail, which is slightly thicker than 1 mm, to get such a detail:
    Magnetic motor holder
  5. Assemble all parts of a homemade engine into one. The base will be a battery holder.It is necessary to insert supports into it, which will support the coil and supply current to it. The last thing you need to do is put a magnet on the battery and push the coil of a homemade electric motor a bit. If you did everything right, the electric mini motor will start and spin smoothly. You can stop it only by removing the magnet or coil. Remember that when the coil is installed in the mechanism, the battery discharges due to the circuit being closed, so be sure to remove the coil or battery so that it does not discharge prematurely.
    DIY magnetic motor

Immediately draw your attention to the fact that you can remake and improve the design of a homemade small engine in your own way. For the example below, we will provide you with several video tutorials that may help you make your version of the engine out of batteries, copper wire and magnet.

What to do if homemade does not work

If suddenly you have assembled an eternal electric motor with your own hands, but it does not rotate, do not rush to get upset. Most often, the reason for the lack of rotation of the motor is the too large distance between the magnet and the coil. In this case, you just need to cut the legs a little, on which the rotating part rests.


Also check whether you have cleaned the ends of the coil well and whether contact is made in this place. The symmetry of the coil also plays an important role, so try to do everything carefully and slowly.

Working perpetual gear

That's the whole technology of assembling a home-made magnetic electric motor at home. If you watched the video tutorials, then you were surely convinced that you can make an engine out of a battery, copper wire and a magnet in different ways. We hope that the instruction was interesting and useful for you!

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