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  • led display circuit.

    nenuadwani

    Member

    Updated: Oct 26, 2024
    Views: 1.3K
    hi to all.
    i need a help about my project on message display through led's. i have gone through various circuits but the thing is we have been instructed not to use microcontrollers and programming. can anyone provide me with some details. i would be grateful is there could be suggestions on more good ideas for the project provided they do not involve programming and microcontrollers.
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Replies

  • d_vipul

    Member • Feb 21, 2011

    Hey Nenu,

    Please mention what you want to display????
    And How????

    Then only we can answer on this.......

    Regards,
    VIPUL
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  • Harshad Italiya

    Member • Feb 21, 2011

    Display using LED and not Using Microcontroller... seems weird.
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  • a.alandkar

    Member • Feb 25, 2011

    Hello,
    You may use different logic Gates, but its totally dependent on what you want to display.


    Regards :
    Ambar
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  • Hari Prasath

    Member • Feb 26, 2011

    😁😁I tried using 27C256 EPROMS to animate 8*8 led matrix😁😁.
    The chip holds 32 kilobytes of data which equates to 4096 frames of animation. A 32 kHz clock circuit works with some ripple counters to scroll through each byte of stored data, turning on the columns while sinking the proper row. Of course current protection is a must so use a ULN2308A darlington driver and some 2N2907 transistors at work, but you won’t find a programmable micro-controller.😒😒😒
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  • a.alandkar

    Member • Feb 27, 2011

    Hey Congrates..! That's really great.
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  • d_vipul

    Member • Feb 27, 2011

    nice dude..............
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  • Hari Prasath

    Member • Feb 28, 2011

    a.alandkar
    Hey Congrates..! That's really great.
    nothin spl mate..😁
    😛any time anyting. u can ask me abt electronics...;-)😎
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  • PraveenKumar Purushothaman

    Member • Mar 2, 2011

    deal2die
    😁😁I tried using 27C256 EPROMS to animate 8*8 led matrix😁😁.
    The chip holds 32 kilobytes of data which equates to 4096 frames of animation. A 32 kHz clock circuit works with some ripple counters to scroll through each byte of stored data, turning on the columns while sinking the proper row. Of course current protection is a must so use a ULN2308A darlington driver and some 2N2907 transistors at work, but you won’t find a programmable micro-controller.😒😒😒
    Wow awesome! Why is the security stuff been used here???
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  • a.alandkar

    Member • Mar 4, 2011

    i am working on avr (ATtiny2313) but the problem is its sending me garbage value when i try to communicate serially. Please help if you can
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  • PraveenKumar Purushothaman

    Member • Mar 4, 2011

    a.alandkar
    i am working on avr (ATtiny2313) but the problem is its sending me garbage value when i try to communicate serially. Please help if you can
    Please refer: #-Link-Snipped-#
    For the garbage value thing, you should first purge electronically, when the memory is accessed for the first time.
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  • a.alandkar

    Member • Mar 7, 2011

    its one and the same thing.
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