Uploaded February 2020 | Updated September 2026, 2 weeks ago

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• Description:
In this video tutorial I show you how to build a Volume Unit (VU) meter using an ESP32, a pair of NeoPixel/WS2812B LED sticks, and a MAX9814 mic on a breakout board. I go over the steps of assembling the hardware, and writing the software using the Arduino IDE, so that the audio signal is read from the mic, and a set of LEDs—proportional—to the amplitude lights up using a wide range of colors.
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• Related vids:
Getting started with the ESP32 using Arduino: youtu.be/-P7RD-DWVuA
Getting started with Websockets: youtu.be/ROeT-gyYZfw
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• Project parts:
ACROBOTIC Development Boards for ESP32:
amzn.to/2D3KiA6 (affiliate)
amzn.to/303INZK (affiliate)
acrobotic.com/products/acr-00024
ACROBOTIC WS2812B RGB LED stick:
amzn.to/39Zpxlc (affiliate)
ACROBOTIC MAX9814 Mic Breakout:
amzn.to/2SQVWow (affiliate)
ACROBOTIC WeMos ESP8266 D1 Mini 2×1 Dual Base Board Shield:
amzn.to/3bV4FgO (affiliate)
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• Project code:
github.com/acrobotic/Ai_Demos_ESP32/tree/master/vu_meter
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• Sponsor:
This video was sponsored by PCBWay.
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• Music:
Epidemic Sound (https://epidemicsound.com). Standard YouTube License.
NoCopyrightSounds:
Track: Electro-Light - Symbolism [NCS Release]
Watch: youtu.be/__CRWE-L45k
Free Download / Stream: ncs.io/symbolism
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#ESP8266 #ESP32 #Tutorial