[L&I] A LED Candle – A Brush Candle

When I observed the candle light, I tried to defuse the light with several materials.

(At first I wanted to use the other Neopixel ring and Jewel together, but I realized that Jewel is RGBW and the other one is RGB. So I desoldered those. If I want to use them together, I think I should use separate pins for each LED modules.)

1.Acrylic half-transparent

  • It looks great, well defused.

2. Blue liquid – It was my cold medicine.

I would like to make a blueish color for the bottom of the flame.

3. Brush

  • I like it the most because I wanted to make a shape of the flame and light. Because of the hair, the light spreads smoothly and vertically.

Hayeon Hwang(@hayeonhwang)님이 게시한 동영상님,

I wanted to try to make the different oval shape depending on the movement or environment.

CALM: long, less movement, slow …

ACTIVE: short, fast, flickering …



I bought these paint brush from Homedepot.



Using only 3 LEDs of the 7LEDs, I wanted to express the color of the flame.

I tried to use Interval.h library to set different timer(slow and fast movement). But in this code the library is not that necessary. I made functions for Interval.h, but I did not used it.

(Q. piezo has some noise value 0, I tried to remove the value so that I added ‘val’ to ‘pval'(previous value) and if the result is bigger than 3(minimum value), it moves fast.(state==2). But sometimes there are two continuos 0 noise value. So It was not well filtered. I would like to know how I can remove the noise value effectively.)

I am still working with the code…I hope to make it to gently change for two status.

  • Long and short

  • speed of movement


It was Really difficult to take pictures to show real colors.


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