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
- 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
Step 3: The hardware
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.