This instructable will show you how to make a simple and cheap atmosphere background lighting system for your PC!
This simple system can be used with the AtmoWin software, or using the AtmoLight plugin in VLC (media player) , it connects to your PC using the standard USB connection on your arduino.
It has only one channel, but it still provides a nice effect.
A video of it in action:
This could be expanded to two channels, for more info see the last step.
Step 1: Parts
You will need:
- An arduino
- 3x 2k2 resistors
- 3x an NPN transistor, capable of switching 12Volts (I will be using a 2SD1062)
- A 12Volt adapter (wall wart)
- A barrel jack
- A 12Volt RGB (common anode) LED Strip (I will be using this one)
- Header pins
- Some prototyping board (I will be using some perfboard)
Step 2: Schematic
As you can see, the schematic is quite simple, it's just the same circuit three times, one time per color.
Step 3: The hardware
Cut a piece of perfboard so it covers all the pin headers on the arduino, make sure the holes in the perfboard line up with the holes in the headers.
It should be about 45 by 52 mm, leaving you with a grid of 17 by 20 holes.
Start assembling the circuit, I have added a picture showing how I built the circuit on my piece of perfboard.
All the components are on top of the board (the side without the solder rings) , the blue lines are the connections on the underside of the board.
If you are using a different transistor, make sure it has the same pinout as mine (Base - Collector - Emitter) , otherwise you will need to build the circuit differently.
If you are using the same LED strip that I am using, you can cut the strip into 6 smaller segments (on the indicated lines) , you can then add some wire between each segment, which makes it easier to position them.