12. Led Lamp

<Intro>

For this project, I decided to build my own LED lamp to eliminate the problem of working in the dark, whether it was in the garage, or in my room. It may seem pretty simple at first, but it is useful for what it's worth, especially when it is made out of scrap parts. It uses rechargeable battery packs so you can light up the area portably, or you can plug it in a 5-volt power source.

<Lamp>

<Build>

I started off by connecting LEDs in parallel, which allows all LEDS to retain the same brightness without any voltage decrease, while also illuminating a larger area. The reason why they stay the same brightness is that they are all connected in parallel, and thus they share the same voltage node, but the current needs increases because now there is more than one pathway for the current to flow into. Thankfully, LEDs are pretty efficient for their use, and they do last a long time than other light sources. In addition, I constructed a base made out of aluminum plate and bolts along with a bendable stalk to keep the LED array in place and use the mentioned batteries and USB cord as a way to power the LEDs. 

<Lamp ON>

<Overall>

Since we need to make sure we power the LEDs without burning them out, they need a current limiting resistor so that it provides the LEDs with a proper current according to ohms law (V/R equals I). In conclusion, this project, while may be simple to use, is also very useful for its designated purpose.

<LED lamp circuit>