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can anyone please tell me how to interface a condenser mic with AT89c52. i want to activate some device with the help of clap. for example if i clap once, device 1 gets activated, if i clap twice, device 2 gets activated and so on. i just need to know how input is fed to microcontroller from mic...
there is an IC called HT 12A for encoding and HT 12D for decoding the Infra Red. search for the datasheet, you can get all the information related to the components u need.
Yes i also think its a good idea. But do i need to have any buffer or it works with normal hardware?
can you please tell me how to transfer the read data through memory location between main and interrupt???
I have successfully made 8X16 scrolling dot matrix which can scroll only 6 capital alphabets. Then i added an EEPROM to increase the number of character. I am successful to write the characters to EEPROM but when i scroll those characters from EEPROM flickering occurs. I even checked by...
sorry for late reply but i was trying to do as you said but it didn't work. i haven't used shift register and i am using uln2003A. Inputs to uln2003A is fed from microcontroller's port 2 and each output of uln2003A is fed to cathode of each segment of display. i have used resistor of 220 ohm in...
hello guys, i wanna make seven segment display using LEDs and interface it with 8051 to make a countdown. i have thought to make a single segment with 4 leds so that there will be 28 LEDs in one seven segment. plz help me with how to connect these LEDs so that they would glow enough.further i am...
Re: my 8051 project.
hey guys, i also wanna make a device which take human voice as an input and do what is commanded, for example if i say "Light ON" then one specified light is ON and when i say "Light OFF" then that light goes OFF. i searched in net also they recommend to use some other...
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