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MAGIC LIGHTS

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  • First published on: 1-1-2007

    MAGIC LIGHTS

    VIJAY D.SATHE


    The circuit as shown in the figure employs 14 bi-colour (red and green) LEDs having three terminals each. Different dancing colour patterns are produced using this circuit since each LED can produce three different colours. The middle terminal (pin 2) of the LEDs is the common cathode pin which is grounded. When a positive voltage is applied to pin 1, it emits red light. Similarly, when positive voltage is applied to pin 3. it emits green light. And when positive voltage is simultaneously applied to its pins 1 and 3, it emits amber light. The circuit can be used for decorative lights.



    IC1 (555) is used in astable mode to generate clock signal for IC2 and IC3 (CD4518) which are dual BCD counters. Both counters of each of these ICs have been cascaded to obtain 8 outputs from each. The outputs from IC2 and IC3 are connected to IC4 through IC7 which are BCD to 7-segment latch/decodor/driver ICs. Thus we obtain a total of 14 segment outputs from each of the IC pairs consisting of IC4 plus IC5 and IC6 plus IC7. While outputs from former pair are connected to pin No. 1 of all the 14 bi-colour LEDs via current limiting resistors, the ouputs of the latter pair are similarly connected to pin No.3 of all the bi-colour LEDs to get a magical dancing lights effect.


     

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    Post Comment | 46 Comments



    nandhini   1314 days ago

    its very useful...
    Reply  
    anubhav   1311 days ago

    thts quite interesting............
    Reply  
    VISHAL PANDE   1304 days ago

    its good...
    Reply  
    NDAYISENGA JEAN CLAUDE   1296 days ago

    wow is so nice super so i want know the programs used in those IC thanks a lot
    Reply   1 Reply
    amit   1271 days ago

    i need an circuit for light amlification can you give it to me
    Reply  
    santosh kumar   1293 days ago

    simply superb.......
    Reply  
    jeyakumar   1291 days ago

    its useful and nice ckt.
    Reply  
    dilip verma   1289 days ago

    its ckt as very good
    Reply  
    Ravivarma.r   1287 days ago

    Its so.... funny
    Reply  
    shankar   1284 days ago

    not good
    Reply   1 Reply
    vikas   1283 days ago

    very bad
    Reply  
    eswar   1278 days ago

    its amazing but out put display how get i mean colors rply me
    Reply  
    jeevitha   1275 days ago

    wow its gud
    Reply  
    Priya   1255 days ago

    I want to make this for my project..Is this circuit tested?
    Reply   2 Replies
    sri   1149 days ago

    it is good
    Reply  
    Efy Admin   1253 days ago

    Yes, it is
    Reply  
    Reno   1249 days ago

    Almost how much wud this circuit cost?
    Reply   1 Reply
    Laxminarayan   1222 days ago

    nearly 150
    Reply  
    Ricky   1225 days ago

    @ EFY..can u tell me how much will it cost to design the circuit???
    Reply  
    subbu   1225 days ago

    the circuit is much usefull and very nice
    Reply  
    neha   1208 days ago

    shall i increase the leds and how can i pls help any one..
    Reply  
    jay patel   1177 days ago

    i like it not bad
    Reply   1 Reply
    Dibyajyoti Nayak   1165 days ago

    Very Excellent...
    Reply  
    gabriel hansda   1173 days ago

    in magic light project wat ll be the value of all resistor???
    Reply   1 Reply
    VARADHANROBO   1161 days ago

    r1-r28330 ohms r29 and r3015k.
    Reply  
    srikanth   1161 days ago

    i want a documentation on magic lights mini project
    Reply  
    ram   1160 days ago

    what is the technology used in this.reply to thispls.
    Reply  
    Rocky   1159 days ago

    Nice Project. Is this the structure or the kind of making of a magic light?a hrefhttpwww.rulac.comsolar led lightsa
    Reply  
    aruna   1158 days ago

    bt the circuit is little complex..can we simply the ckt..tat s reducing the number of ledsresistorsics..cod u pleas help.
    Reply  
    klns   1138 days ago

    excellent one
    Reply  
    ravi   1119 days ago

    how much cost it will take total lplease tell
    Reply  
    suriya   1115 days ago

    really superv...........
    Reply  
    yogananda m   1101 days ago

    can you send how the design values are taken with briefly ?
    Reply   1 Reply
    Efy Admin   1101 days ago

    Please mention which component values
    Reply  
    Bharath   1099 days ago

    Nice and update deteils
    Reply  
    ashish dharjiya   1093 days ago

    i like and a am verry verry happy seen that projects
    Reply  
    durgajeni   1089 days ago

    its very funny.but useful
    Reply  
    gopal   1088 days ago

    my best circuit the week
    Reply  
    Sumit Tonape   1083 days ago

    can i get the video for it
    Reply   1 Reply
    pavi   1077 days ago

    applications of this and its uses
    Reply  
    lalitha   1070 days ago

    yes it is useful but some complex
    Reply  
    BIKAS KUMAR PATHAK   1070 days ago

    nice one
    Reply   1 Reply
    himaja   1067 days ago

    hey please sent me the absract
    Reply  
    satyam   999 days ago

    I m doing same proj..but could get to light up only the last 4 leds..any help?? i m using HEF4511 instead of CD4511will it make a difference
    Reply   1 Reply
    Efy Admin   983 days ago

    You can replace with HEF4511
    Reply  
    subalakshmi   413 days ago

    what are the resistor values for those connected i series with LEDs
    Reply  

     
     
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