The fan is not a complicated device. It consists of a motor, blades, various adjustment buttons and a stand-case. There are additional elements, such as backlight, clock, but these are options that are not so important.

It is not at all necessary to buy a fan, because you can easily make one yourself. Moreover, this does not require special skills of a master.

With the proper skill, homemade model It will turn out not as a way to get rid of old things, but as an opportunity to show imagination and, possibly, hidden talents. Some craftsmen quite easily create both functional and extremely attractive options. They harmoniously complement the interior and become the center of attention no worse than any art object.

How to make a fan from a regular electric motor

Probably the simplest and quick way To acquire a homemade fan assembled with your own hands, you need to find a regular motor, which is most often found in toys.

Standard electric motor from a toy

Ordering such a thing is not difficult. Moreover, today, without stopping for a minute, caravans of various trinkets from the Middle Kingdom ply. And if not, then just buy an inexpensive toy car and remove the motor from it.

But you definitely shouldn’t expect the impossible from such a device. Rather, it will only be able to move air slightly. But for a desktop model it will do just fine. He will be able to blow air onto the face of someone sitting at the computer.

For such a fan you can use absolutely anything. The main parts will be:

• blades;
• motor;
• on/off button;
• stand;
• power system.

Otherwise, the limit of the idea will only be within the boundaries of imagination.

After the motor is ready for use, it makes sense to take care of the power supply. These could be batteries, just like in the toy for which the motor was intended. But definitely this kind of energy will not last long. However, there is a plus - the device will remain compact and portable.

The second option is mains power. But in this case you need not to overdo it. Direct connection via a plug is a sure way to burn out the motor. So you shouldn’t experiment, trying to spin the engine to high speeds. On toys, electric motors are usually designed for 3-4.5 Volts, and the desire to provide more rotation due to powerful energy sources, firstly, will quickly drain the source (if it is a battery), and secondly, will seriously reduce the life of the fan, even to the point of failure. The engine will start to heat up and the brushes may melt.

But modern chargers convert the voltage in the network, reducing it to specified parameters. You can find a power supply, including on sale, that is ideal for the motor.

To create blades, you can take any material. The main thing is that it is light. Due to the weakness of the motor, the less the blades weigh, the faster the rotation will be, and, therefore, the efficiency of the work.

• The easiest option is to take a cork from a regular plastic bottle, which will serve as a fastening for the blades. Make a hole in the bottle the size of the rotating axis of the electric motor.
• The blades can be made from a regular CD. A hole the size of a bottle cap is burned in the center. The circumference of the disk is divided into 8 sectors. They are cut to some distance, but not to the center. Afterwards, the disk needs to be heated with fire to easily bend the blades. A lighter is suitable for this.

Creating blades on a CD

• You can attach the disk to the cork with glue. The second option is when a hole is burned in the middle for the plug - immediately connect the structure. The melted plastic will harden and hold firmly.
• After all this, the structure is connected to each other. Wire is suitable for the stand. This is perhaps the simplest option. Yes and for this lightweight device I couldn't think of anything better. You can bend the frame in such a way as to hide the batteries there unnoticed. Or carefully run the power supply wire going to the motor.
• The circuit does not have to be always closed if you use batteries, so you need to secure the button to the case. It's inexpensive. You can use it from a toy from which the motor was removed.

Another option for a propeller design is to use thick paper. The method is even simpler, but less practical.

Advice! When experimenting, remember that the larger the fan blade area, the noisier it will work. On the other hand, small blades do not move air as efficiently.

How to make a fan out of paper

Paper is not the best suitable material For home fan for the simple reason that it is very impractical. Any ingress of water, even banal humidity, and the device will rapidly begin to lose its hardness.

But even despite all the disadvantages, craftsmen They even make quite nice samples from paper. Of course we are talking about thick paper or cardboard. Strong material from boxes works well. You will also need a regular motor or cooler, an on/off button and wires.

The simplest table fan using cardboard

The approximate design plan is that the device can be simplified as much as possible. The impeller is easy to cut and can have many or few blades. Everything is at the master's request. The motor can be mounted on a wooden or cardboard block. The stand will also be made from paper or an old computer disk.

It is only important not to forget that such a fan is very light, which makes it shaky in operation. Therefore, it is necessary to further strengthen the body. Old batteries, bolts or nuts work well.

How to make a fan from a plastic bottle

Crazy Hands' favorite raw material is plastic bottles - almost ideal for creating your own fan. Good for propeller upper part standard round bottle. You need to cut off the part with the cork just above the pasted label.

• The part of the bottle with the cork will be the blades. To do this, you need to cut the plastic down to the cork so that you get several different petals. After one, the petals are cut off at the base. The remaining ones are future propeller blades.

Fan blades made from a plastic bottle

• You can use a candle or lighter to shape the blades and twist them a little. The main thing is not to overdo it, because the plastic is soft and can catch fire. The goal is to warm it up a little, not set it on fire.
• The plug will be the base of the propeller. A hole is made in it according to the dimensions of the motor axis. To keep the connection firmly, you can put it on glue.
• Now is the time to think about the foundation. The rest of a plastic bottle will also work for this. A hole is cut in it to rigidly place the plug with the blades at a right angle. You must remember to weigh down the base - with nuts, bolts or any other metal objects.
• A hole is made on the base for the button and the chain is assembled. There is also enough space for a power supply.

Field for imagination when working with plastic bottle extensively. You can use several bottles at once. One will become a propeller (more precisely, part of it), and the second will become a solid foundation. But then they will need additional materials. For example, ordinary drinking straws.

Simple and lightweight bottle fan

How to make a USB fan

But the most convenient and simple fan is an old cooler, which can also be used. For example, put it on a table, and it will cool, but not the processor or video card, but a person.

The advantages of this design are obvious: the cooler is very reliable, because it is its job to constantly turn the impeller and cool something. And it’s easy to get coolers. It is enough to either find an old computer, or order a new fan or buy it in a store.

The cooler design is simple. This is a ready-made fan in a plastic case. There are two wires coming from it (usually red and black).

Regular computer cooler

Making a USB fan takes just a few minutes:

1. The wires on the cooler are stripped 1-2 centimeters.
2. Take a regular USB cable, at the end of which you also need to get rid of the insulation. The standard USB cable has four wires inside. Of these, you should choose black and red. Cut off the rest so as not to get in the way, and clean up the necessary ones.
3. Connect the red wire of the cord to the red one on the cooler. Black - with black. Carefully insulate areas without winding. Ready.
4. All that remains is to think about the holding device. Here the already familiar wire, which can take any shape, can come in handy. Even suitable for a fan housing carton, and if you spend a little more effort and time, you can even build a real designer object.

Design approach to fan design

It is very convenient when the fan turns on when the computer starts. In addition, modern units have several USB outputs. It turns out that such a device will not interfere.

Another point is that sometimes you want to turn on the fan regardless of the computer’s operation (especially since a device with a cooler turns out to be quite powerful, good and useful). Then you can use adapters. For example, today they make chargers for phones that easily turn into a USB cable when the connector with the plug is disconnected. Similar equipment can be used for a fan, making it universal: operating from the network and from the USB port of any computer. Another advantage of this design is the simplest electrical circuit. A cooler-based fan can even do without extra buttons: just a wire and a plug.

DIY bladeless fan

But a slightly unusual use of a free cooler (but you can get by with an electric motor) is a bladeless fan. Modern, interesting, with the right skill – no less effective – a solution that definitely attracts the eye. The thing turns out to be completely non-standard, spectacular.

For example, here is the ideal appearance bladeless or duct fan model:

This is roughly how you can make a bladeless fan with your own hands

The most important thing about bladeless models is, of course, their appearance. Therefore, if you make such a device yourself, you need to try to think through the frame in the smallest detail. Uneven edges, roughness - all this will spoil the impression.

Frame bladeless fan is almost entirely work area. Don’t think that some kind of space technology is being implemented here.

Air circulation is carried out quite prosaically - with the help of rotating blades. They hide in the base tube. If you take a cooler from a computer, you can make a stand according to its shape. Here, as they say, at the discretion of the author.

The differences from the classics are in the location of the cooler - it is placed horizontally in a bladeless fan.

Cooler location in a bladeless fan

The top ring is made hollow inside, two-layered. There the main redirection of air in the right direction is carried out.

A hollow cavity is visible in the upper ring of the fan, from where the air blows

You can make the frame of a bladeless fan from plastic, wood, or thick cardboard. It is better to use a flexible material so that you can easily give it the shape of a ring. An alternative is to use a combined structure. For example, the rings are made of cardboard or plastic, and the rigid frame is made of wood.

You need to cut:

• four sides for a stand;
• Two circles of the same radius;
• Twist two rings of different diameters.

Then everything is put together and, if necessary, painted.

Meals can be arranged in different ways. A universal option is a combined wire for the USB connector and a plug for the socket.

The device can also be a little more complicated. For example, make a light strip along the edge of the rim from diode strip. The backlight consumes little energy, but will add beauty to the fan. And the power supply and wiring, if necessary, can easily be hidden in the stand.

How to make a powerful fan with your own hands

When it comes to powerful fans, then you need to understand that they require completely different engines. Starting from old fan motors to others household appliances. Good fit:

• unnecessary ceiling chandeliers with a fan;
• old lawn mowers;
• drills;
• hoods.

The only thing is that you need to get into the voltage corridor that is required to power the motor. For example, drills most often require 18 volts. But for ventilation purposes, it will be enough to supply less than half of this voltage. Even at 12 Volts, the fans are very loud and extremely unstable due to the strong inertia of the rotating blades.

Power for powerful electric motors must be supplied from the mains. Therefore, you need to think about installing a power supply or connecting charger. The electrical circuit can be complicated by adding stray light bulbs, an electronic clock, a radio, a toggle switch or a board for switching operating modes. But it’s easier, of course, to limit yourself to only a fan with a button, if that’s enough.

In any case, such homemade variations of homemade fans are sometimes much better than even purchased options. With the right skill, you can get a very good thing, a real pride of the owner.

If there is no air conditioning at home and even household fan, A summer heat doesn’t allow you to live normally, you can use your wits and use old computer parts. Any craftsman can assemble a fan from a cooler, fortunately, the materials for construction are always at hand, and in every home or office you can fish out something useful from computer trash.

Materials for useful crafts

To make this simple DIY device, you will need following materials and tools:

• soldering iron and related accessories (solder, rosin);
• a piece of USB cable of any length;
• knife, wire cutters, electrical tape;
• the computer cooler itself (one or more).

The fan will be connected via a USB connector to the computer. This makes it possible to use the fan without third-party power sources.

There are coolers different sizes. Their design includes wires with which you can adjust the number of revolutions depending on the temperature of the central processor. In our case, these wires will not be needed - we will work only with the black (minus) and red (plus) wires, which receive voltage from the computer motherboard. The remaining wires can be cut off using wire cutters so that they do not interfere with assembly. We need to do this carefully so as not to damage the red and black cores we need.

Operating procedure:

1. Take any unnecessary USB cable you need to connect the cooler to it. It may not be formally working, but here we need to find wires of the same colors as the cooler. For ease of work, the remaining wires are removed using wire cutters.
2. Remove the outer insulation from the USB cable with a sharp utility knife: measure a distance of approximately 3-4 cm from the end of the wire and apply the knife to the wire.
3. Then, in a circular motion, without pressing, draw the wire in a circle.
4. Now pull the insulation - it should easily come away and expose the bundle of wires.

If you press too hard, cutting the insulation may damage the insulation of the wires underneath the outer layer of plastic you cut. Then you will have to bite off the entire braid and repeat the procedure due to the fact that a slight violation of the integrity of the insulation usually leads to a short circuit. Now that you have prepared the wires yourself, you can proceed to the next step.

Soldering and insulating wires

Take the wires of the cooler and USB cable, remove about 10 mm of insulation and twist them so that the red wire is connected to the red, and the black to the black. Next, you will need a soldering iron to tin the twisted ends and thereby give strength to the connection. To do this you need to do this:

• heat the soldering iron and prepare a piece of rosin or flux;
• attach the twisted wires to rosin or soak them in flux;
• melt a piece of solder or tin on the soldering iron tip;
• run the tip along the twisted wires if they are treated with flux, or apply them to a piece of rosin and press a little with a hot tip.

This process is called tinning the wires or treating the contact points with hot tin with your own hands. Rosin is needed to help the tin bond better to the surface of the bare USB wire.

Now you need to isolate the conductors to prevent this from happening. short circuit when connected to a computer's USB port. So, unwind a piece of electrical tape about 3-5 cm long and pass it between the soldered wires. Wrap one wire so that the tin-coated contact area is reliably insulated and no pieces of bare conductor are visible through the layers of insulating tape. Next, you need to cut off another piece of electrical tape and do the same with the second wire.

Stand

It's time to think about a stand for your DIY fan you just made. You will need a piece of copper or aluminum wire. Take a piece of wire and bend it into a “P” shape. Thread the ends into the bottom two bolt holes of the cooler. Bend the wire and thread the ends through the top holes. Now you can adjust the fan tilt level.

If there are many fans

You can make a whole battery of fans with your own hands. To assemble a fan from four or more coolers, you need to know how to properly connect them to the power source (USB connector of the computer), as well as how to connect these fans to each other.

Connecting cables

From the school physics course we know that there are two types of connections - serial and parallel. With the first type of connection, you need to take the red (positive) wire from the USB cable and connect it to the red wire of the first cooler, and connect the black wire of the first cooler to the red wire of the second cooler, and so on. The last one, black, connects to the core of the USB cable of the same color.

Parallel connection is much simpler: all the red wires are assembled into one twist, just like the black ones. The red wires are connected to the red wire of the USB cable, and the black wires, respectively, to the black wire. To make the contact more reliable, you need to make tinning and wrap the contact points with electrical tape, as described above.

Registration

Now you need to think about the design of the fan unit that you made yourself. In order to assemble all the coolers together, you need to decide what shape the structure will be in. You may find it easier to fold them into a square or just line them up.

In any case, for these purposes you will need glue gun, which is usually used to make DIY products in technical creativity or floristry circles. You can use it to glue the ribs of the coolers in the right places and let them cool. But if you don't have a gun and just have wire and tape, you can fasten the coolers through the bolt holes with wire and wrap the edges with black tape.

So, you have managed to make sure that making a simple room air blower with your own hands is simple and accessible even to a person far from technical creativity. Such simple solutions can help out in a situation where you need to keep the room cool in windless weather, but a regular fan is either broken or simply not in the house. In these cases, simple ingenuity comes to the rescue.

This material is inspired by impressions from working on a previous article, the hero of which was a silent HTPC in a radiator case. I really wanted to use the AMD A10-5800K in it. Convenient item, which combines a fairly powerful processor and graphics core in one package. But there is one difficulty - its typical heat dissipation is 100 W. At first glance, this is not so much, but critical temperature CPU is 70 degrees. It turns out to be an interesting equation, in which there is a low temperature and decent heat release. Not an easy task.

Naturally, like every reasonable person, I initially decided to take the path of least resistance - buy a commercial cooler that could cope with the task of removing 100 W of heat from the processor.

Cooler options

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There is a fairly extensive list of cooling systems that can operate without fans and dissipate from 65 to 130 W. Of course, the list is not the most complete.

The first two are, one might say, veterans, the rest are much younger. Of the entire list, I had the first three, and I decided to try them out in the “passive”, starting with Scythe Ninja.

Naturally, without a fan, since there was little hope for it. In his technical specifications it is indicated that in the “passive” mode it is capable of discharging 65 W. And I put it on a hundred-watt processor.

The board used in testing was MSI FM2-A85XA-G65. When turned on, monitoring in the BIOS shows 32 degrees, then the temperature begins to rise by about 1 degree per minute and very soon goes beyond 73 degrees. Then I turned it off.

Very often, in the sultry heat, there is not enough air flow in the room. To solve this problem, many people buy table fans; they are convenient and compact, some of them work from USB, that is, they can be connected to any charger, power bank or laptop, so that the coolness is always with you. But why buy something that you can make yourself using available materials? For site readers we have prepared two simple instructions who will clearly explain how to do USB fan at home with your own hands. So, all you need to prepare is a sharp knife, good scissors, electrical tape, an unnecessary USB cable and, in fact, executive body homemade products. As for the latter, it is customary to use one of two options: an old cooler from a computer or a motor from a car or other toy.

Idea No. 1 – Use a cooler

It will take no more than 15 minutes to assemble a USB fan from a cooler. First you need to prepare the cooler. Two wires come out of the device - black and red, and sometimes yellow, even less often - blue. Yellow and blue are of no use to us. We strip the insulation by 10 mm and put the prepared element aside.

Next you need to prepare the USB cable. We cut off one half of it and clean off the insulation at the cut point with a sharp knife; a stationery knife works perfectly. Under it you will see four wires, of which two are necessary: ​​red and black. We also clean them, but it is better to cut off the other two (usually green and white) and insulate them.

Now, as you understand, you need to connect the prepared contacts in pairs, according to: red to red, black to black using twisting. After this, you need to carefully insulate the cable connections using electrical tape or heat shrink and make a stand. As for the stand, it’s up to your imagination. Some people successfully use wire, while others cut out a nest in a cardboard box in a very interesting way.

In the end, a homemade mini fan is connected to a computer or charging unit, and you can enjoy the operation of your own electrical appliance.

Cooler idea

Idea No. 2 – Use a motor

In order to make a USB fan from a motor and a CD, it will take a little more time, but you can still easily make such an electrical device with your own hands in an hour. A motor for such a homemade product should be chosen with an operating voltage of approximately 5 Volts, maybe a little more. If you take the motor to a lower voltage, too much current will flow through the circuit and the motor will quickly fail.

First, we prepare all the elements of the device. In this case, you will need to make an impeller (blades).

To do this, we recommend using an ordinary CD. We draw it into 8 equal parts and carefully cut it good scissors, almost reaching the center. Next, we heat the disk (it’s convenient to do this with a lighter), and when the plastic becomes more elastic, we bend the blades at an equal angle (as shown in the photo).

If the impeller is not bent enough, then no air flow will be created during the rotation of the disk. However, if you overdo it, the homemade product will also work poorly and unstable.

When the blades are ready, move on to creating the main mechanism. Inside the disk you need to insert an ordinary one, cut to the right size, a champagne cork that needs to be placed on the motor shaft. Next we move on to creating a USB fan stand for a laptop.

Here, as in the previous version, everything depends on your imagination. Of all the available means, the option with wire is the most suitable. When homemade USB the fan is ready, we connect the motor wires to the USB cord wires, as in the previous version, carefully isolate the twist and proceed to testing.