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From an analog point of view, you can get a voltage controlled current source so that the audio signal affects the amount of current going to the LEDs.

 

From a digital point of view, you can set up the LED brightness on a PWM and use the PCM value of an audio signal to adjust the duty cycle.

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they must use addressable LEDS of some kind and have a good software to control it.

 

you are looking for ws2812b or ws2813 LED´s paired with some arduino microcontroller to give them their signals.

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MATERIALS

- You can buy led strips with addressable leds that are only 4 mm (0.16 inches) wide

- Buy an appropriate led strip controller from ebay or make your own with an cheap Chinese arduino copy as i did with my diy rgbw power supply shroud.

 

BUILD

- You can use an acrylic sheet of the same thickness (or thicker) as the width of the led strip, that is 4 mm (or more). 

- Cut the acrylic to desired shape.

- Sand the surface of the acrylic so that it is matte (for diffusing the light).

- Attach the led strips to the end of the acrylic sheets so that they shine into the acrylic sheets from the edges.

- Cover the led strips with something so that they are not seen and so that the edges of the acrylic sheets look nicer. 

 

PICTURES

Pictures of my diy led controller (i will maybe sometime post a detailed how-to when the design is nicer) and pictures of my diy rgbw power supply shroud.

 

59df93d48d2b8_IMG_20171008_114906(cropped).thumb.jpg.c1273c12f234d7c88d6b205252621023.jpg

59df946c08607_IMG_20171008_114834(cropped).thumb.jpg.7d25f3d93ec2a81783716c1032de7eb8.jpg

59df94a295a6f_IMG_20171008_114925(cropped).thumb.jpg.7caa8674afba148737cb64e06453baa8.jpg

 

 

GIF-171012_195719.gif.f050ec6332356814d29ce363c18e83d8.gif

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