USB Terranium

This is an idea I have had for a while and my entry for the USB Contest. I got the idea while taking apart a 9 LED flashlight from Harbor Freight Tools. A USB port is ideal for powering this because a USB port outputs 5V and the flashlight needs 4.5V. The only problem I can see with this is that 5V going into a 4.5V device will cause it to burn out faster than just running off batteries, but the LED module is cheap and easy to replace.

Because of the way the world is (mainly because I don't won't to be sued for some stupid reason), I am obligated to say this:

**Disclaimer. I am NOT responsible for what you do with this information. Do not do something stupid and hurt yourself or your computer.**

Step 1 What You Shall Need.

In order to make this, you will need a few things.

Tools:
A Phillips Screwdriver (or something else sharp)
A Flat Head Screwdriver
Wire Cutters
Wire Strippers
A Soldering Iron (and Solder)
Desoldering wick* (not needed if you're careful)
A Helping Hands (these things are invaluable when soldering)
A Hot Glue Gun (and Glue Sticks)

Materials:
A Mason Jar w/ lid (any jar w/ a lid would do, this is just what I had)
An old USB Cable
A 9 LED Flashlight from Harbor Freight.
A Switch (Optional. If you do include it, make sure it isn't momentary)
Soil
Plant

*Not pictured here was desoldering wick because I rarely need it.

I think that's it. Now Let's Get Building!

Comments

[ronanry]

maybe i'm wrong but... in my mind, in my ooooold school remembering, if i put a resistor voltage is less... (sorry for my english, i'm french :))

[bombmaker2]

You may be right but I just kind of threw this thing together and did not worry about any other electrical components. I know diodes each drop the voltage by a small amount, so those would work too. And I see no problems with your english.

[octopuscabbage]

I would recammend if your gonna do this for long periods of time using a resistor so your LEDs don't burn out. I think im going to try this and use my own leds to add cool colour effects ^.^

[bombmaker2]

I probably will. Post some pics when you build it. :)

[octopuscabbage]

You could also maybe code something to turn the terrarium on and off when it needs to be by turning off the power to that USB port and turning it on on a schedule in the program.