Solar Desk Lamp

This is a lamp powered by solar panels. It helps provide light to those in underprivileged areas, helping them study and gain a better education and future for themselves. It is also cost effective, as now those in underprivileged areas don't have to pay for electricity.

1. Solar Panel
2. PCB
3. A LED light as such
4. 3D Printer
5. 3D Printing Filament
6. Soldering Iron
7. Soldering Accessory Kit
8. 1N5817 Diode
9. 15k ohm, 2k ohm, 100k ohm, 100 Ohm resistors
10. 2n3904 NPN transistor
11. 3 PCS lithium battery, all around 1.2 v.
12. Single Pole switch
13. Coolant Pipe

The project collects light from the solar panel which it converts into an electric current. This current goes through the Q1 NPN transistor during daytime where it is pulled down. This means the second transistor is open and the current doesn’t flow through to the led. During night time however, when the switch is closed, a current flows from the battery to the LED light. This turns the LED on.

Click the Front Plane to start a new sketch. Make a rectangle with dimensions 60 x 180 mm coincident with the origin. This will be the sketch for the base of our lamp.

Click finish sketch and now extrude the base 10 mm. The result should like that of the image.

This is the hole on which we will be mounting the arm. According to Amazon, the thread is a BSP pipe type thread. Click on the create drop down menu to create a hole coincident with the origin, and then use the measurements in the images.

A few small errors in the schematic:

The solar cell on the left side should actually be two 3V solar cells connected in series for a total of 6v.

Seocndly,, the 100k ohm resistor on the bottom left is actually a 100 ohm resistor.

There is no 100 ohm resistor on the right side, even if it is in the schematic.

The rechargeable battery on the right side is actually 3 PCS 1.2 V batteries connected in series.

Solder the panels in series first. On the backside of the panel connect the positive and negtive nodes to connect them in series.

Next, you will have to begin soldering the transistors, resistors, and diodes on the pcb as seen in the image. You will also have to solder the batteries in series. Copy the schematic ans well as the image above to get the final product.

The final product should look like the image above.

Take the threaded end of the coolant hose and screw into the base you made earlier.

Next, you will have to push the wires up the coolant hose. To do that, remove the wires from the LED strip and deconstruct the LED as shown in the image.

Finally, solder the wires to the LED strip. You are now close to the final product.