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Altera_Forum's avatar
Altera_Forum
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11 years ago

Want to add buzzer on expension slots using DE2 board

Hello

i need to add buzzer for alarm in de2 board.

i have no idea how to write vhdl code about this. Plz help me

now I make all led are light up for alarm instead of sound.

but I need sound for alarm

plz help me....

7 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    11 years ago

    what kind of buzzer do you connect?

    there are buzzers that just need power to buzz.

    If you want to ad a speaker try search this forum for speaker and beep.

    There are some threads that may help.

    If you then still need help, feel free to ask.
  • Altera_Forum's avatar
    Altera_Forum
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    11 years ago

    Sorry for bumping into ur forum.I'm a final yr student n I'm currently working on my final yr project which is to design an intelligent street lighting system using FPGA.a street light that comes on at night and goes off during d day.BT my problem is how to interface d external ldr circuit as input signal and d external led as output...plss guy help!

  • Altera_Forum's avatar
    Altera_Forum
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    11 years ago

    Leds is an output pin and what do you get from the LDR? analog digital? Please submit a new thread, if there is no similar one, and put these details in as well.

  • Altera_Forum's avatar
    Altera_Forum
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    11 years ago

    thanks,the ldr serves as the analog input to the fpga and the led serves as the output.depending on the state of the ldr,if the ldr is giving a low voltage to the input pin,the led will not come on but if it gives a high voltage the led will come on.my problem is do i need an adc to help convert the signal to digital or how can i make the project work or become a reality

  • Altera_Forum's avatar
    Altera_Forum
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    11 years ago

    1. Read: this (http://www.alteraforum.com/forum/showthread.php?t=37986)

    2. dont reply but create a NEW thread on this forum. This keeps everything tidy.

    3. What is your problem? Search the web for ADC in order to learn how to read an analogue signal. A digital output should not be too difficult.

    4. Do you have any experience with an FPGA, HDL or hardware development?
  • Altera_Forum's avatar
    Altera_Forum
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    11 years ago

    Thanks I already created a forum called (help..FPGA based led lighting WHR d d led comes on at night and off at day) BT no one is replying pls help