Saturday, January 10, 2015

ATTINY85 RGB light upgrade Vers. 1 - Christmas wreath

During the holidays a christmas wreath decoration that has flickering lights failed.  I opened it up and found that the light bulb was blown and the motor that controls the multi colored light wheel was no longer working either.


Light and color wheel with motor
 
So I thought that I replace the faulty hardware with the attiny85 and an rgb led.  Well it worked, it just wasn't bright enough.


 




Even though the leds were mounted on a board just above the fiber optic bundle, the light was still not bright enough.  There were only three leds, 1 red, 1 blue and 1 green.



The wreath uses fiber optic strands bundled together to display the colors from the lighting.

 


I have a working circuit and a breadboarded circuit installed that works but it is too dim.  So I am working on putting more leds in the circuit to see how much more light that will provide.  Started using a DipTrace to create schematics and pcbs.

Here is the schematic used for the project, this is a Diptrace screenshot.
  The learning curve is much easier than EagleCad.  So I think I will focus on using Diptrace and but use EagleCad as needed.

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