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WS2812B LED Wifi control with music visualizer Rev. 03

I designed this PCB to be used with a project from Instructables to build a sound reactive lamp. Take a look at the project if you want to build it for yourself:

As you see in the linked project, i changed the schematic a bit. I've added the sound detector to the lamp pcb and removed the controller completly. You have to modify the code to make it work. I've added a logic level shifter to get the signal up to 5V, which will suit the demands of the WS2812B logic.

The power supply connection is suitable for 1.5mm² or AWG16 wire. Solder them directly to the DC socket of your choice.

Mounting holes are for M3 screws. On the right side of the DC power supply pads are two additional M3 holes for securing the power wire with a cable tie.

Dimensions: 1.79" x 1.77" / 44.96mm x 45.47mm

Mounting hole seperation: 1.4" x 1.2" / 35.56mm x 30.48mm

I am using the following components:

1x 10V 4700uF electrolytic capacitor // example:

1x 4 channel bi-directional logic level shifter // example:

1x 330 Ohm resistor 1/4W 5% // example:

1x RobotDyn sound detector module // example:

1x single row 20 pin header 0.1" spacing // example:

2x single row 18 pin socket 0.1" spacing // example:

2x single row 6 pin socket 0.1" spacing // example:

For the LED and sound detector connection you have to split up the male pin header into pieces of 3 pins per header.

I recommend the use of max. 144 WS2812B LED. The maximum current draw is about 8.7 amps for the LED's.





ID Name Designator Footprint Quantity BOM_Manufacturer Part
1 330 R1_330 AXIAL-0.4 1 ?
2 Female header 1X18/2.54 ESP_3V3,ESP_VIN HDR-18X1/2.54 2 Female header 2.54-1*14P
3 3 pin Header MIC,LED 3 PIN HEADER 2 ?
4 Header-Female-2.54_1x6 LVL_LV,LVL_HV 1X6 PIN HEADER 2.54MM 2 Female header/2.54mm2x3 Female header
5 4700uF C1_4.7MF CAP-D10.0XF5.0 1 Non - polar electrolytic capacitors10uf 100v
6 DC_5V V1 HDR1X2 1 ?


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