With a Teensy 3.6 + Audio Adapter, and an ESP-32 Devkit 1, it's incredibly simple to input audio and drive WS281x LEDs.Designed by Diod.design in United States of America
Here's what is included: 1x PCB 1x AUX Jack 3.5mm 1x DC Barrel Jack 1x 1,000 UF Capacitor 3x 470 OHM resistors 1x DC DC CONVERTER 5V 2.5W (Inputs: 5V-36V. Outputs: 5V) 3x tactile buttons (Attached...Read More…
Full assembly instructions with pictures can be found at www.diod.dev/pcb-assembly
With this kit, you'll be able to easily input audio, through Aux or Mic, and drive up to 3 LED strips.
I designed this PCB because making LEDs react to music is a common project undertaken by many makers. However, it often leaves you with a mess of wires sticking out of a breadboard, and often times does not include audio input through an Aux jack (which is required for high quality music-visualizers). This PCB can be applied to a wide variety of LED projects, both music-reactive and non-music-reactive. It also gives the Teensy wireless controls through an ESP-32 which is connected to the Teensy through TX1/RX1 ports.
The Teensy's Audio Adapter is an extremely powerful piece of hardware that can perform the time-intensive FFT function, leaving the Teensy to perform additional analytics with FFT data and drive LEDs. However, the audio adapter does not make it very easy to hook up an Aux Jack as an input. But this board fixes that.
As seen in our pictures, this PCB includes 4 header pins below the 4 through-holes on the audio adapter, allowing those to connect to the PCB and the AUX jack that is soldered on.
When driving large amounts of LEDs (over 300), power the LEDs separately so all of the power doesn't go through the PCB. A "Barrel Jack Splitter" will enable you to power the PCB and the LED strip separately. If you're driving more than 300 LEDs at full brightness, feel the cables to make sure they aren't heating up.
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