8X8 FFT Audio Spectrum Sound Control Voice Control LED Spectrum Analyzer 64 Dot Matrix LED FFT Audio Spectrum Electronic DIY Production Kit COD

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ID: 1532916
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                    Description:

                    Working voltage: 5V
                    With fixed mounting holes
                    Board size: 75 X 45 mm
                    No need for filter circuits, driving points, spectrum indications and many other indicators.
                    Curing program, support 8*8 (8 rows and 8 columns) LED display;
                    Designed for audio equipment, it is widely used in various audio output devices;
                    Professional audio decoding, showing the frequency and amplitude of the audio signal;
                    Three display modes (flash, slow flash 1 and slow flash 2) are selected to provide a stunning visual experience;
                    Three sensitivity modes (high, medium and low sensitivity) are selected to suit different power supply environments;
                    Automatic audio gain adjustment, always showing the best visual effect;
                    The circuit design is simple, and the current limiting resistor is directly driven to drive the LED.
                    With self-test mode
                    (There is no 3.5MM power cord, please purchase it separately. This connection is not included)
                    With 3.5MM audio port on the board, you can access the mobile phone MP3 MP4 IPAD iPhone As long as you have 3.5MM audio output port, you can output it to this, and realize the audio spectrum function (follow the music dance).

                    Key function description:
                     
                    The “Function Button” pin is connected to a button, which has the following three operations:
                     
                    1. Change the display mode (press and hold the button for less than 1.5 seconds)
                    This button is in the "ping-pong" working mode. Pressing the button once (pressing the button for less than 1.5 seconds) will change the display mode once.
                    Slow flash type 1 (display shows "S1"): In this mode, the display refresh rate is the slowest and the visual feel is good.
                    Flash mode (display display "F"): In this mode, the display refresh rate is very fast and dynamic.
                    Slow flash 2 (display shows "S2"): In this mode, the display refresh rate is moderate.
                    The chip reset works in the "slow flash 2" mode, and the mode is changed by pressing the button once.
                     
                    2. Change the signal detection sensitivity mode (press and hold the button for more than 1.5 seconds)
                    The button is in the "ping-pong" mode of operation. Pressing the button once (pressing the button for more than 1.5 seconds) changes the sensitivity of the signal detection.
                    Lower sensitivity (display shows "L"): In this mode, it is possible to filter weaker interfering signals and is insensitive to the clutter response of the power supply.
                    Higher sensitivity (display shows "H"): In this mode, a weaker audio signal can be detected, sensitive to the clutter of the power supply.
                    Moderate sensitivity (display shows "M"): In this mode, the signal detection is sensitive and the power supply clutter is not high.
                    The chip reset works in the "moderate sensitivity" mode, and the sensitivity mode is changed by pressing a button for a long time.
                     
                    3. Enter test mode
                    Press and hold the button first, power on, the chip automatically enters the test mode. In the test mode, you can test the brightness of the LED and the quality of the line.

                    Parts List:


                    Numbering Name Model Quantity
                    R1-R6, R10, R11 Resistor 33 9
                    R9 Resistor 10 1
                    R7, R8 Resistor 330k 2
                    R12, R13 Resistor 1k 2
                    C4 Capacitor 220uF 1
                    C1, C2, C3, C5 Capacitor 104 4
                    U1 Chip FFT2088 1
                    D1-D64 Diode LED 68
                    e1 Tact switch 1
                    J1, J2 3.5MM patch audio port 2
                    DC 3.5MM DC power socket 1
                      PCB 1
                    Package included:

                    1 x LED FFT Audio Spectrum Electronic DIY Production Kit


















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