Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
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 ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
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