I did some more scrounging to create a mini Locnar using the LEDs from a Glade Light Show air freshener. The wall wart had previously been scrounged from this air freshener for the bread board power supply. Now we reuse part of the circuit board with the LEDs combined with what we learned in the Ping Pong Ball diffuser project to create a color changing orb. A simple program randomly cycles three PWM outputs on an Arduino compatible Freedunio board to make a color show. There is even a video.
The video is not the best. It is a new camera on the swing arm camera mount. The focus keeps cycling in and out as I move my hands around in front of the camera. But you can see the LED orb and hear my descriptions for the parts.
More about the project and the video after the jump.
This is my first YouTube video and I’m sure it shows. The camera is new and I think it works fairly well. I know it has some options that will help with the focus issues. I also need to work on the background noises in my lab for the next video.
The audio and video were recorded in one pass and uploaded it to YouTube. Have a look and let me know if you think I should do more videos like this, only better…
In the first picture (left) you see the circuit board from a Glade Light Show air freshener. The two white wires were cut to free the wall wart power supply. I noticed that the three LEDs have one pin connected in common on the circuit board. Testing showed that this pin should be tied positive. Using a large pair of wire cutters I cut the circuit board behind the LEDs as you can see in the second picture. The circuit board would hold the LEDs and provide a good place to solder on wires, as you can see in the finished picture (top of article). The leads on each LED were re-bent so they would fit into the three holes in a Ping Pong ball. Each LED was roughed up using a small file to help diffuse them as described in the previous article.
It would be nice to combine the RGB Ping Pong ball with the Analog Meter from a previous article. I also purchased some colored ping pong balls to play with. Maybe a nice box with a few meters and Ping Pong ball LEDs to monitor the web server for this site. Any suggestions?