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Recent content by jo12345

  1. J

    Wireless sensor network for monitoring green house

    Sir, i wish to do a similar project using zigbee or may be motes.... can you please help me?? we can either demonstrate our project by using a single set of sensors that are stationary at place in the greenhouse field or as u said use a robot. can motes be useful n cost effective?
  2. J

    piezo buzzer connection

    i had already checked the buzzer. it was working perfectly fine. i am unable to understand the problem with the circuit
  3. J

    piezo buzzer connection

    please reply.... its urgent
  4. J

    8051 Event counter with 7 segment Display

    **broken link removed** check this site
  5. J

    piezo buzzer connection

    how do i do that?
  6. J

    piezo buzzer connection

    program #include<reg51.h> unsigned int digi_val[10]={0x40,0xF9,0x24,0x30,0x19,0x12,0x02,0xF8,0x00,0x10}; // Hex value corresponding to the digits 0 to 9 sbit output_on_pin = P3^0; // Enable pin to enable the seven segment. sbit stop_pin = P3^1; // Stop pin to reset the...
  7. J

    piezo buzzer connection

    how do i connect the piezo buzzer in my circuit? i hav attached the circuit diagram. its a quiz buzzer.this is a circuit i am mounting on a pcb. the seven segment display works properly and gives me the output. the problem with the circuit is that the piezo buzzer does not work in the circuit...

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