DIY

Uninterruptible power supply for Wi-Fi router

Uninterruptible power supply for Wi-Fi router  Uninterruptible power supply for Wi-Fi router If your lights are often turned off, this does not mean that you should be left without the Internet. Laptops, phones have batteries, and computers have uninterruptible power supplies. Of course, their capacity is also not infinite, but you can work for a while.
The problem is that the router also runs on electricity, but, as a rule, it does not have an additional power source.
To eliminate this problem, a master from India, with the speaking nickname opengreenenergy, decided to make an uninterruptible power supply. Moreover, as a battery, it will use a regular external battery. This arrangement reduces the cost of the device and makes it more versatile.
The device has the following parameters:
-Weight (80 g)
-Output: 9 V/12 V – 1.5 A
-Display for setting the voltage of 9 V or 12 V
-Case, printed on a 3D printer
Tools and materials: -Increase converter module – LM2587S; -Voltmeter display 0.28 inches; -Connector and DC plug; -Rock switch; -Relay 12 V; -Diode – 1N5822;
-Resistor – 330 Ohm;
-Resistor – 580 Ohm; -Red LED; -Green LED; -Heat shrink tube;
-Wire 22 AWG ;
-Soldering iron; -Glue gun; -Nippers; -A tool for stripping wires; -3D-printer; -Hair dryer;
Step One: Device Circuitry
Circuitry is very simple, under normal conditions, mains power is consumed by a 12V DC adapter to power the router and supply power to the relay coil (COM pin connects to NO pin). In the event of a power outage, the relay coil will be de-energized, the COM pin will be connected to the normally closed contact, and the energy stored in the power supply will be fed to the input of the boost converter.
Two 1N5822 diodes are used to block the reverse current. Two LEDs are used to indicate the health of the two power supplies. The voltmeter display is used to show the output voltage, so the output voltage can be easily set as required (12V or 9V).
The positive terminal of the DC input connector is connected to the positive terminal of the DC output connector through a Schottky diode (1N5822). Relay terminals C1 and C2 are connected to the positive and negative terminals of the DC input jack. 5mm green LED with current limiting resistor connected to 12V and ground.
Power from the power supply is supplied to the UPS through the micro USB port. The positive terminal (Vbus) is connected to the COM pin of the relay. The NC relay contact is connected to the IN + terminal of the LM2587 boost converter. The negative terminal (GND) is connected to the IN terminal of the boost converter.
The Out + terminal of the LM2587 boost converter connects to the positive terminal of the DC output connector through a Schottky diode (1N5822), and the Out terminal connects directly to the negative terminal of the DC connector.
The positive terminal of the voltmeter connects to the positive terminal of the DC output connector via a rocker switch, and the negative terminal is connected to the negative terminal of the DC output connector.
Uninterruptible power supply for Wi-Fi router Step two: preparation of components
Two LEDs with a diameter of 5 mm are used to indicate the health of two power supplies (12V adapter and Power Bank). In normal state, both LEDs are on, if the mains supply fails, the green LED will go out.
Resistors are used to limit the LED current. The wizard used 330 ohms for the red LED and 1 kohm for the green.
The wizard trims the LED legs. Solders a resistor to the anode (longer leg) of the LED. Then he solders the red wire to the resistor and the black wire to the cathode of the LED. Isolates the joint with heat shrink tubing.
Uninterruptible power supply for a Wi-Fi router Uninterruptible power supply for Wi-Fi router  Uninterruptible power supply for Wi-Fi router Uninterruptible power supply for Wi-Fi router The circuit uses a 5-pin micro USB module to supply power from a power bank.
Solders the anode of the red LED and the red wire to the VBUS terminal of the micro USB module, and the cathode of the LED and the black wire to the GND terminal.
Uninterruptible power supply for Wi-Fi router The purpose of using a voltmeter is to display the output voltage so that the user can set the output voltage of the boost converter to match the voltage of the router (9V or 12V). A rocker switch is wired in series to turn the display on and off.
Uninterruptible power supply for Wi-Fi router Uninterruptible power supply for Wi-Fi router Uninterruptible power supply for Wi-Fi router This project uses two Schottky diodes (1N5822) for backfeed protection. General purpose diodes can be used, but the main reason for using a Schottky diode is that they have a lower forward voltage drop than general purpose diodes.
Solder wires to the diode legs and insulate the solder with heat shrink tubing.
Uninterruptible power supply for Wi-Fi router Uninterruptible power supply for Wi-Fi router Uninterruptible power supply for Wi-Fi router Uninterruptible power supply for Wi-Fi router Next, you need to prepare the DC connector and plug. The wizard used two 5.5mm DC connectors, one for the 12V adapter and the other for the 12V output. The connector pads need to be tinned.
Uninterruptible power supply for Wi-Fi router Uninterruptible power supply for Wi-Fi router Uninterruptible power supply for Wi-Fi router Solders wires to the connector pads.
Uninterruptible power supply for a Wi-Fi router Uninterruptible power supply for Wi-Fi router  Uninterruptible power supply for Wi-Fi router Uninterruptible power supply for Wi-Fi router Step three: body of this project case.
The case consists of two parts: a lid and a box.
Uninterruptible power supply for Wi-Fi router Uninterruptible power supply for Wi-Fi router Creality CR-10 Mini 3D printer and 1.75 mm gray are used for printing and yellow PLA filaments.
The print settings are as follows:
Print speed: 60 mm/s
Layer height: 0.2 mm
Layer density: 25%
Extruder temperature: 210 ° C
Table temperature: 55 ° C
Uninterruptible power supply for Wi-Fi router Uninterruptible power supply for Wi-Fi router Uninterruptible power supply for Wi-Fi router Step four: building
The housing houses the DC connectors, rocker switch, relay and voltmeter display. Fixes LEDs with hot melt glue. Similarly, hot glue the TP5100 charging board, battery and LM2587s boost converter.
Installs and connects the rest of the components.
 Uninterruptible power supply for Wi-Fi router Uninterruptible power supply for Wi-Fi router  Uninterruptible power supply for Wi-Fi router Uninterruptible power supply for Wi-Fi router  Uninterruptible power supply for Wi-Fi router Uninterruptible power supply for Wi-Fi router Before installing the cover, you need to adjust the output voltage using the potentiometer on the boost converter.
Uninterruptible power supply for Wi-Fi router Uninterruptible power supply for Wi-Fi router The last step is to test the UPS, connect the power supply to the micro USB port using the USB cable (the red LED will light up). Then you need to connect the power bank (the green LED will turn on).
Connects the power cable to the router.
The UPS operating time depends on the battery capacity of the external power supply. An external 10000 mAh battery will very easily provide 2-3 hours of backup power.
Uninterruptible power supply for Wi-Fi router Uninterruptible power supply for Wi- Fi router You can watch the assembly and operation of the device in the video.

Source:

usamodelkina.ru

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