How to make OTG cable with their hands

We All know that any electronic device can be connected to a computer via a standard USB cable. Thus, using laptop or personal computers can be linked between different devices, such as printers, cameras, smartphones, and storage devices (flash drives and external hard drives).

What is OTG?

Is There a way to do without a computer? Easily, in the market for a long time, many adapters under a common name OTG cable. The cost varies from few dollars to a dozen or even two. However, they differ from simple data cables is so small that it's easy to make OTG cable with your hands. For example, from the remnants of the old connectors, cables, and adapters.

So, first you need to decide why we need the OTG cable. The power of the other device due to battery may be necessary when there is no power grid nearby, for example on trips or camping trips, but this is not the most effective. Need to decide soon if we want to connect two specific device is constantly or better to make a universal OTG cable with your hands to use any USB devices, by type of store. Also it is better to check if your device support that connection.

Tools and safety

In working with the cables you need:

• Knife for Stripping insulation from;

• Wire cutters or side cutters (remember the saying: "7 times measure-1 cut"), the extra spike on the cable will degrade the quality of the communication between the devices and increase resistance in General, what will be the impact on data loss or inability to charge due to the resistance of the conductor;

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• Soldering iron, solder and flux; at the end of the article we will look at how we can do without this device.

When working with a soldering iron remember about security measures. This device is dangerous its high temperature not only during work, but a few minutes after shutdown. Protect your work table surface from contact with the molten tin or rosin. Protect exposed skin from touching the heated parts of the soldering iron.

What?

To start is to understand what the contacts in the plugs and sockets is what is needed, as in mini - and micro-versions for 1 more pin than the connectors of the universal serial bus. So, the first pin is marked with the standard red insulation inside the wire, designed to supply the voltage. The second and third pins, marked with white and green insulation, is designed for data transmission. The fourth black pin — is zero or ground and is paired with a first feed wire. In mini and micro-USB such functions allotted to the fifth and last pin, and the fourth is the marking or identifier. It is designed to provide information about the connection to the device and data cables generally will not connected.

Simple version

First consider the connection between two specific devices, such as tablet computer and the camera. Because they both have a socket with 5 contacts, be it micro or mini USB, you just need to gently solder the appropriate wires together. The 2 unnecessary data cable with suitable plugs. You have to cut them and strip of insulation from the wire, and then connect according to the color of differentiation, i.e. black with black, yellow with yellow and so on. Each connection must be isolated from the others by using a hot-melt adhesive or at least tape. When connecting this cable to the devices on the screens displayed dialog menu where you can choose which device will be the primary in this mini-network. You can force in the cable to identify the main and secondary device. For this purpose, plug the main device you need to connect the 4th and 5th contacts and the other plug to 4th contact just doesn't connect with any. Thus, the device will automatically define themselves mainly in the connection because the marker will show a connection, whereas on the second device it will be “empty”.

Different devices

Consider, how to make a universal OTG cable with your hands. In addition to plug a micro or mini USB depending on the device we need a USB connector. Take it from old motherboard, cut from a USB extension cable or take apart a USB hub (so-called USB hub). The latter option is preferable, since it will allow you to connect to the main device and several peripherals, like computer. The connection sequence is the same as above, plug the device in a similar way to forcibly specify a master device, connecting the 4th and 5th pins. The figures clearly visible to the connection scheme of these pins connectors and plugs.

Powered

Some devices have higher power consumption that leads to rapid discharge of the main battery of the gadget, whether a smartphone or tablet. In this case, OTG cable with their hands canto improve by adding a power cable with USB-plug for the network adapter. You can use the remains of the data wire, which was previously cut micro or mini USB connector. The connection is produced by two current-carrying contacts, black and red, ignoring the wires for data transmission. You need to remember that at large distances, the resistance of the cable, reinforced solder joints, will reduce the voltage and the amperage, so the use of long lengths of cables, most likely, will not allow to achieve stable connection of devices. Use approximately 20-30 cm of wire for each plug and connector, to avoid breakages and interruptions of the connection.

Finally I want to mention how to build a OTG cable with your hands without soldering. The principle of the Assembly is the same as that described above, however, connection wires made several other ways. We indicate here two of them:

1. The Solder paste contains solder powder and a flux and does not require the use of a soldering iron. This paste is applied on the connecting part and the usual warm up with a lighter.

2. There is a connection at all without using high temperatures. The so-called Scotch-Loki — connectors for low-voltage systems with a special contact, hitting the wire with a clamping device, a pair of pliers for example.

No matter What you plan to do with your hands, remember that the cutting of the cables — if not the guarantee and replacement of such cables can not be.