[flower carving hands-on] interesting and fun music visualization series small project (13) -- organic rod column lamp

On foot , I found some discarded organic rods in the grass

At the roadside hardware store , Bought a one meter wall trunking box for decoration

Organic rods with bubbles

The trunking box has a removable cover

Prepare project materials

The diameter of the organic rod is about 20mm

Measure and scribe

Drill a small hole first

Enlarge the hole

Punch completion

The sound module is still used MAX9814（ A few yuan is cheap and easy to use ）

MAX9814 It is a low-cost high-performance microphone amplifier , With automatic gain control (AGC) And low noise microphone offset . The device has a low-noise front-end amplifier 、 Variable gain amplification (VGA)、 Output amplifier 、 Microphone bias voltage generator and AGC Control circuit .
● Automatic gain control (AGC)
●3 Kinds of gain settings (40dB、50dB、60dB)
● Programmable action time
● Programmable action and release time ratio
● Power supply voltage range 2.7V～5.5V
● low THD：0.04% ( Typical values )
● Low power shutdown mode
● built-in 2V Low noise microphone offset

Use colored lights WS2812B

Its main characteristics are
Intelligent reverse connection protection , The reverse connection of power supply will not damage IC.
IC Control circuit and LED Point lights share a common power supply .
Control circuit and RGB The chip is integrated in a 5050 In the encapsulated components , Form a complete external control pixel .
Built in signal shaping circuit , After any pixel receives the signal, it will be output after waveform shaping , Ensure that the line waveform distortion will not accumulate .
Built in power on reset and power off reset circuits .
The three primary colors of each pixel can realize 256 Level brightness display , complete 16777216 Full color display of two colors , The scanning frequency is not less than 400Hz/s.
Serial cascade interface , It can receive and decode data through a signal line .
The transmission distance between any two points shall not exceed 5 There is no need to add any circuit when measuring meters .
When the refresh rate 30 frame / seconds , The number of cascades shall not be less than 1024 spot .
The data transmission speed can reach 800Kbps.
The color of light is highly consistent , High cost performance .

Main application fields
LED Full color luminous word lamp string ,LED Full color module , LED Full color soft light bar hard light bar ,LED Guardrail tube .
LED Point source ,LED Pixel screen ,LED Profiled screen , All kinds of electronic products , Electrical equipment, running lights .

WS2812 Electrical schematic diagram of the module

WS2812B The light band is selected per meter 60 Bare board with black background

WS2812B It is a combination of control circuit and light-emitting circuit LED Light source element , Its control IC by WS2812B, The light-emitting element is 5050RGBLED, Voltage is 5V, The peak current per unit is 60ma, The light band is made of three wires ,VCC GND DIN They are power supply +、 Power Supply -、 The signal , When using external power , External power supply - Need to be connected with SCM GND Connected to a .

The light band is fixed on the cover of the trunking

Start installing organic rods

Arduno UNO Project wiring diagram

Fix the organic rod with hot dry glue

installed