Mixing colors in a string blade using 8mm LEDs – blue-white experiment. I have to admit that this report is a little off-topic (i.e., I do not use four strings), but it is a minor addition to the previous experiments. In this experiment I used white and blue 8mm LEDs with about 40 degrees viewing angle. I sanded only the blue LEDs to obtain a wider viewing angle, while the white LEDs were kept as they were, to obtain a white core. I only made one section consisting of 2 blue LEDs and 3 white LEDS. The distances between the LEDs are about 4mm. The photo shows the result.
The core is very white and the blending is fairly good, but not perfect. On the downside is that the tone of blue is hardly present at all. I have noticed that the blue LEDs has a lighter shade compared to the 3mm LEDs that I used previously. Adding another section would mean 5 LEDs of each color, while in this case the proportion (3 out of 5) is in favor of white, but I doubt the difference will be than much. The LEDs are not as bright as I thought.
I actually made this experiment some time ago, but I quickly decided to not complete this string, because I rather save the LEDs for another project. I have ordered 3mm white LEDs with 25 degrees viewing angle, so once I get them, I will go back to using “sets of four LEDsâ€, but then it will be with different viewing angles for the blue and white LEDs.