Monday 20 May 2013

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LED COLOUR ORGAN - 3 CHANNEL

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    • LED COLOUR ORGAN - 3 CHANNEL
    Introduction :
    This is an Electronic Projects section. You can find out simple, hobby, little complicated electronic projects on this section. You only need basic knowledge to make this projects. You can also purchase ready made Projects and DIY kits.
    Features :
    ¤  Aura Design
    ¤  Portable
    ¤  No negative power supply needed
    ¤  Analogue for good fading effect
    ¤ 12 volts DC power Supply Needed.
    ¤  Low power consumption.
    ¤  Circuit with easily available components
    ¤  Supports mono and stereo
    Circuit Diagram :
    Components Required :
    Resistors :

    47k           x 3
    1M            x 1
    1k            x 5
    360k          x 3
    680k          x 3
    39k           x 3
    100k          x 5
    470k          x 2
    160E          x 2
    20k Preset    x 3
    -----------------
    Red LED       x 4
    Yellow LED    x 4
    Green LED     x 4
    Working :
         Audio signal is connected to C1 which bypasses AC and block all DC content in the input audio signal. Next section is an inverting amplifier with Input Resistance 47K and Feedback resistance 1M. So, the voltage gain is 21.275 and inverted. Then it is connected to 3 sections for filtering through a variable resistor to select the input voltage of three. Next section is Band pass filter for Bass, Normal, Treble frequencies. Its output is filtered from DC and rectified. It is connected to the base of a NPN transistor and this NPN transistor dives LEDs Smoothly. The limiting resistor in series with LEDs provide high current flow protection.
         
          All Non-inverting terminals are connected to a virtual ground network and through this idea we can avoid negative voltage to the op-amp.
    Purchase DIY Kits :
    PCB Layout :
    Fully Assembled and Ready made Board.
    ( You need to soldered )
    ( You need to etched and soldered )
    Complete Components and blank PCB
    Components Only
    Complete Components and Ready made PCB
    Now Shipping Service is available only to Kerala and Tamil Nadu
    Cost: $2.24
    Cost: $2.88
    Cost: $3.45
    Cost: $3.73
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    Download Board.                                 Download Layout.
    Available Images :
    It Is Closed Now!  Please come back later
    Capacitors:

    1uf       x 3
    4.7uf     x 2
    0.047uf   x 3
    0.1uf     x 2
    0.0022uf  x 2
    2.2uf     x 3
    22uf      x 1
    -------------
    1N4007    x 3
    2N3904    x 3
    -------------
    IC LM324  x 1
    IC uA741  x 1
    Sterio Jack 1
    The dawn of digital music is visualized in the form of lights. But now they are mostly visualized through programming techniques. Here I present a project which visualized music by Light Emitting Diodes. First of all the credit goes to makezine blog where I grabbed this circuit and published. The more introduction will available a makezine blog. Here I am only presenting this project in front of you.

    There is a Virtual Ground section in the circuit diagram. That means it needs to be connected with all non-inverting terminals of op-amp. Quad op-amp IC MC3324PG and Single op-amp IC TS921 are unavailable at my place. So i replaced both of them with LM324 and uA741. For this circuit both ICs will work fine. Components packs includes this both Ics and if you want to do this project in your home, please order the DIY kits from bottom of this page.
    LED COLOUR ORGAN - 3 CHANNEL