If you’re looking for the Home disco LED light ball, then you’ve come to the right place.
Well, the main goal for this project is to create a 3D spinning LED Sphere, which uses a spinning ring with tri-color LED. Beside that, this project also practices the concept of precise angular sensing and persistence-of-vision as well.
Since the ring is spinning at about 1800 rpm, you need to find some wire that can really handle this speed (the piano wire will be the best choice, as it kept anything from coming loose at 1800 rpm) and will not loose out easily.
In addition, you can supply the power wirelessly through an inductive charging coil, just like the concept where the electric toothbrushes are charged.
After it, is time for assembling the LED controller board. You’d better to do it under a microscope for a faster and accurate result.
If you refer to the above figure, you clearly see that the inputs from the microcontroller are at the bottom, while the power outputs to the LED are at the top side. The others components are:
- The four DIP sockets – buffer the signal status.
- The twelve SOIC packages -a high speed power latches, which directly drive the LEDs.
- The others small components – regulators, capacitors, resistors, multiplexors etc.
That’s it, listen to the music rhythm and enjoy the beat with the LED sphere…[read]
