solar usb charger

by:C.E.T     2020-06-04
This Instructure will teach you how to make a device that charges a usb device with solar energy.
This can be very convenient during holidays or at school.
This is my first explanation.
I\'m Dutch so I\'m sorry for the crappy grammar I\'m looking for all over the internet and I found out how a lot of people make usb chargers with batteries, there\'s also how some people make a battery-free charger for solar usb.
But I want to make a usb charger with both devices.
This way, when it is lying in the sun charging my usb device, it can charge itself (
Ipod touch)when I want to.
I can\'t find something similar online so I made this Instructure so you guys can do one too :)
I forgot to take a lot of photos during the construction, so I also apologize for that.
List of materials I used to make this usb charger :-
Solar Garden Lantern 4x (
I\'m using the one you can see on the picture)-
4 rechargeable AA Batteries
Dual usb port-
4x150 k ohm resistance-
4x560 k ohm resistance-1x diode (no LED)-
A little plywood-
A little solid wood-
Some isolation tapes
A little wire-solder-
Some green paint
Some white paint.
Here is the list of tools I use :-drill-wood saw-hacksaw-soldering iron-screwdrivers-pincers-
A very small brush
When you turn on the solar garden lantern, you may see a circuit board with at least one LED, one solar panel (
Probably stuck in a plastic box)
One switch, two battery connectors and one battery.
This battery is AA battery if you are lucky.
I\'m not so lucky.
I have 4 rechargeable AAA batteries.
My circuit can\'t work with these batteries.
The batteries you\'ll find there are always rechargeable, so if you can\'t use the theme in this project, put them on other devices that use AAA batteries.
From all of this you need all 4 solar panels, one switch and all 8 battery connectors.
You can also use some wires from here.
First of all, I only have a drawing of the resistor welded to the usb port and a picture of the finished circuit :)
The dual usb port has 8 pins.
4 consecutive usb ports per.
The one on the left is the one that flows the current through the usb device.
Then, from left to right, there\'s data-
Then the data, then the ground.
Maybe you don\'t have pins, but there are wires.
The red one is 5 v, and the white one is the data.
The green line is data, and the black line is grounded.
You will need to solder some resistance onto the pin/wire to enable the usb device to recognize the solar usb charger as a charging device.
You need to weld a resistance of 150 OHMS on the data.
Pins/wires for port 1, and data pins/wires, as well as data pins/wires for Port 2.
So you need 4 resistors of 150 ohms.
You then need to weld a resistance of 560k Ohm on the ground pin/wire and 5v pin/wire.
4 resistors of 560k ohms are needed here.
Then weld the other side of all the resistors connected to port 1 together and weld port 2.
Now you weld 1 wire to two 5v pins/wires and 1 wire to two ground pins/wires.
Now you take a switch from one of your solar garden lanterns and weld it to a wire.
You then weld the battery connector (including the wire from one of your solar garden lanterns) onto the switch and onto another extension wire.
There may be some kind of protective film on the solar panel.
Make sure these sheets are left there during construction.
If you have solar garden lanterns that are easy to remove solar panels, you can skip the rest of this step.
If you don\'t, like me, you have to see the plastic around the solar panel.
My solar panel, after removing all the loose parts, looks like you can see on the photo.
As you can see, one of the solar panels has a blue tape pea at the end of the red line.
There is a diode inside this tape.
I will explain to you in step 6 :)
I used a hacksaw for this.
First of all, I saw all the plastic parts I didn\'t need.
I then smooth both sides with sandpaper and Sander.
When you saw the solar panels down, they looked like they were in the picture.
They are smaller and easier to use like this.
Now, we just need to glue the solar panels together before welding.
Make sure you glue them in the right way.
You want to make sure that the red wire on the side is connected, which is a yellow wire with a veneer.
You may not have the same color line as me, so to compare, the red line is, the yellow line is-.
If you have very thin solar panels, you can put them on top of the box (step 7)
Don\'t stick the solar panels together.
This circuit is much easier than the first part we did.
You have to short the long wires on the solar panel a bit.
Then you weld the three red wires into three yellow wires so that they can be connected in series with a red one and a yellow one left.
This is only done if you have thick solar panels like me.
If you have very thin solar panels, you can put them on top of the box (step 7)
It\'s better not to weld solar panels.
Solder a diode on the wire, it\'s red for me.
Make sure you weld it in the right way.
This means you need to weld it with a gray tip away from the solar panel.
In this way, electricity can flow from the solar panel to the battery, but not to the other direction.
You can also weld the diode to another wire, but if you do, make sure to weld it with a gray tip facing the solar panel.
I had connected the diode to one of the solar panels before I saw the plastic because I didn\'t really think of this. . .
You can start making this box.
You make the bottom and lid first.
To do this, you took the plywood peas and saw two rectangles.
The two are the same size: 10x11 cm.
You have to figure both sides out.
You hold strong wood and see 2 pieces high 3, 5 cm, 10 cm long and 1 cm thick.
Then you see 2 3, centimeters 9 cm long and 1 cm thick.
Make sure all sides meet the bottom.
You also need a \"battery stand \".
I mean a piece of wood in the box to keep the battery in place.
I made it the same wood as on both sides.
This time you need a rectangle 2 cm tall, 7 cm long and 1 cm thick.
The difficult part now.
If you have a free saw, it\'s not that hard.
I don\'t have that luxury, so I have to do it in a hard way.
To see the hole on one side of it, you have to measure the size of the usb port, then switch and see a hole of the right size.
I made this with a normal handsaw, by sawing the vertical line at the place of the hole, so the really thin wood breaks.
Then, when the hole is a little smaller, you need to use sandpaper to make the hole size appropriate.
When you have all the parts of the right size, it\'s time to smooth them out.
Just use some sandpaper or Sander.
You don\'t have to polish the \"battery stand\" because these stand won\'t be visible when your solar usb charger is finished.
Then you can stick everything in place.
Stick the sides to the bottom first.
Don\'t stick the lid to the box, and don\'t stick the circuit to the box!
Place the \"battery stand\" by measuring the correct position with the battery \".
Place the battery on one side of the box, not directly on the battery, but about 1 cm from the battery.
Now your box is finished :)
First draw a square on the lid of your solar panel.
Then take out your drill bit and drill two holes in this square.
Next, you see the square with your free saw.
Make sure your solar panel meets the gap.
If you have a very thin solar panel, you can put it on top of the box and drill eight small holes to get the wires into the box.
Make sure your cover is smooth before you glue the solar panels in place, because after you glue them in place, you won\'t be able to polish it again.
When your cover is smooth, you can stick the solar panel in the proper position.
If you put very thin solar panels on top of the box, you can now weld the wires together.
Now, by soldering the wire from the solar panel to the flat battery connector and-
The spring wire.
Then remove all battery connectors from your solar garden lantern and weld a flat battery connector three times with a spring.
Now your track is officially over.
It\'s time to glue everything in place.
The best way is to glue the battery connector in place first, then the battery, switch and usb port, and then the lid.
Now your solar usb charger is actually done, but it\'s not beautiful.
That\'s why I took out my Sander, bypassed all corners, removed the protective sheet from the solar panel and painted it.
You need to make sure you don\'t have a paint solar panel and usb port, so put some tape on it before spraying.
Also do not place the tape on the top of the protective sheet because the protective sheet will not stick to the solar panel.
To do all the work, I drew a little bit of 0 and 1 under the switch so I could see if the solar usb charger was on without plugging in my usb device.
Now your solar usb charger is complete :)
Fun of charging :)
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