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Musical Light Display with #Arduino

From Robert Robert on YouTube:

This is actually quite easy to make so long as you can get hold of acrylic / perspex blocks reasonably cheap.

Parts:

1. Arduino Uno R3.

2. 4 x 12 pixel WS2812B addressable LED strips from ebay in parallel attached via 200 ohm resistor to pin 6 to limit current.

3. Adafruit max 9814 autogain mic attached to pin A0 https://www.adafruit.com/product/1713

4. 24 x Perspex / acrylic blocks in 2 x 12 sets held together with threaded rods and nuts (each set of 12 has 2 LED strips hotglued to the back so that they light up the blocks).

5. A 60cm x 40cm stainless steel shelf to sit the blocks on and reflect the light back.

6. Powered by 12000mAh External Battery Pack (PowerGen Power Bank Backup USB 5v Charger) with 1000uf electrolytic capacitor across +ve / -ve to protect strips when powering up. This avoids using a mains adapter and needing to be near a socket.

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