Heated insoles can be ordered on the Internet, and you can make them with your own hands. In fact, this useful and pleasant thing has a very simple design. With due diligence, such insoles can even make a child.
Materials and tools:
As the basis for heated rake, conventional thick wool insoles will be used (any other similar material is suitable). We will also need a lithium-ion rechargeable battery 18650, two USB cables, nichrome wire with a diameter of 0.4 mm. We still need elastic elastic bands and a housing for the power supply with a USB connector, for example, from panibank. All "ingredients" can be found on the market, and even easier to order on the Internet, for example, in China.
The working process:
First, we take new insoles and shoes, and check whether they are suitable, and whether the leg feels quite comfortable. If everything is in order to take the nichrome wire and weching about 65 cm. The wire length for each insole is determined separately. Such a segment will be shooting 0.7 and current with a power of 5 volts (this is one leg).
Now you need to make a USB plug. In order for the wire to go vertically, you will need to use a heat shrink. Of course, the wire is being taken and to be afraid. After this, the nichrome wire is flashing part of the prepared insole. You can not flash the heel, as it is actually noticed at all.
Speak nichrome wire to USB contacts will not work, and therefore we simply wear some wires to others and sew threads to the insole. That's all right. It will only be to secure the power supply. To do this, you can use the elastic harness. It sews an excellent holder. As a lock, it will be best to choose a conventional velcro.
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