How to do the USB splitter?

I. Preparation for production

1, renderings

Let's take a look at the finished product of this USB power distributor. The effect of 1 point 4 is mainly composed of 1 USB male seat and 4 USB female seats. The USB male socket is used as the input of the power supply, and four USB female sockets are connected in parallel as the output terminals, thus realizing the functions of 1 point and 4 points:

P02 finished product renderings

2, material preparation

1, USB public seat 1

2.4 USB motherboards

3. Plastic shell 1.

4. There are 1 LED and 65438 resistors respectively.

5. Universal plate (orifice plate)

6, wire tools, etc.

P03 Material preparation

Second, the design principles

1, principle

The circuit principle of this work is very simple, mainly using the parallel output of USB motherboard. The red LED is used as the power indicator.

P04 schematic diagram

The four port pins of USB are defined as VCC, -D, +D and GND respectively.

P05 USB pin definition

Third, DIY process sharing

Prepare four USB motherboards and lay out the bonding wires according to the definition of their pins. Two pins, VCC and GND, are mainly used, and the other two data lines are suspended:

P06 USB socket

The circuit board is directly welded with the universal board;

P07 universal board

The red LED is used as a power indicator, and a current-limiting resistor needs to be prepared:

P08 LED

According to the schematic diagram, weld four auxiliary female seats and 1 USB male seat, and weld LEDs at the same time:

P09 component welding

Influence of welding completion:

P 10 welding is completed.

Wiring on the back of the universal board:

P 1 1 back

Cutting and polishing the box according to the corresponding position of the USB socket of the circuit board;