usbekits presents our projects

mobile solar panel

offgrid idea!

As we are lovers of the free energy we are pround enough for this project.
This is a mobile solar panel.
You can get it with you everywhere.
We made it for camping.
The panel consist of 36 cells (0.45 V , 1.8 watt).

Dimensions : 54x54cm.
Output        : 20 volt (open circuit)
Current       : 3.9 A
Power         : 64 Watt

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watch the pictorial of the construction

We can provide you any help to build this project
if you are interested.
On the left you can watch a pictorial of the construction on our channel on youtube.
Contact us for any help at usbelectronickits@gmail.com
or via the contact form.

Here are some videos that will help you understand how to connect the solar cells in series together!

uv led exposure box

make your own pcbs!

The electronic parts that you will need are:
- 48 high power uv leds (prefer straw hat)
- 8 resistors 150 Ohm 1/4 watt
- 24 VDC power supply

construction of the project slides

How to construct.

It is a simple idea.
There are 8 paraller arrays that consists from 6 leds in serries with a resistor (150 Ohm).
We power them up with 24 VDC.

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Tests.

After a lot of tests we notice that the best exposure time is about 2,5 minutes.

Photo tutorial of the construction.

Led arrangement

Led connections

Box constuction

Putting a difusse material above the leds (only if not straw hut)

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Power supply connections

Testing the leds

The ready box (painted white) and led constuction

Testing the leds inside the box

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Positioning the leds inside the box

Put a jack connector for Power Supply

Putting a protection cover

Putting a glass overlay

resistors storage box

clean up that mess with a clever box!

The parts that you will need are:
- An unused package box
- 4 meters hard paper rolls
- Sticky labels for the values of the resistors

How to construct.

It is a simple idea.
You cut the roll into equal parts about 10cm long.
And then you place them into a package box.

Photo tutorial of the construction.

1.Take a hard paper roll

2.Cut the roll into equal sizes about 10cm

3.Clean the tops with scissors

4.Put the small rolls into a package box

5.The box with the rolls

6.The resistors ready to be putted on the rolls

7.Put on the rolls the values you want

8.The resistors in the rolls

9.The ready storage box