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Recent content by raafia

  1. R

    hardware issue with pic16f877a

    i tried so but no success so far.
  2. R

    hardware issue with pic16f877a

    Thankyou so much - - - Updated - - - t dont I dont think so it is the matter of delay .I permanently turned on the led in code but still it was not glowing in the hardware.I think there is some issue with the configuration bits but don't know what .
  3. R

    hardware issue with pic16f877a

    I have tried each n every thing which you told but it is not working .I have attached my code and schematic .Please check.
  4. R

    hardware issue with pic16f877a

    i have attached the code and schematic for my thermocouple project.There is 25 degree offset in simulation which i will manage later e.g if temperature is 50 then it is showing 75 .But the issue is the same, that there is so much variation in thermocouple reading in hardware.and also i am...
  5. R

    hardware issue with pic16f877a

    Thankyou so much ..i will check that . Have you any experience of working on thermocouple ? I am using K type thermocouple with ad595.The resisistance between the two terminals of thermocouple is 8k. After ad595 i am getting .25volts for room temperature and .39 volts for human body .The point...
  6. R

    hardware issue with pic16f877a

    LED is not dead.I have tested it directly with power supply.
  7. R

    hardware issue with pic16f877a

    I am using 20Mhz crytal - - - Updated - - - i have already tried with pull up resistor but still it didnt work .I am using regulated power supply for controller.I will definitely try 100nf bypass capacitors and will let you know if there is any progress or not . I have selected debug in...
  8. R

    hardware issue with pic16f877a

    I have tried that too placing a 10k resistor but still not working. - - - Updated - - - yeah i am using 22pf capacitors
  9. R

    calibration of K TYPE thermocouple

    I am using K type thermocouple with ad595.The resisistance between the two terminals of thermocouple is 8k. After ad 595 i am getting .25volts for room temperature and .39 volts for human body .The ponit is it is not giving me the stable value, a lotos variations .Can anybody please provide me...
  10. R

    hardware issue with pic16f877a

    I have attached the circuit diagram . I am using using MPLAB IDE v 8.91 and hitech9.83.I am using Dataman 48UXP universal programmer for programming the pic and that software indicates that the programming is succesful.What do you mean by running the code in debug mode ?
  11. R

    hardware issue with pic16f877a

    I am trying simple led blinking code on pic16f877a .Simulations are working fine on proteus but hardware is not responding.I am using mplab with hitech compiler My code is as follows #include<htc.h> __CONFIG( FOSC_HS & WDTE_OFF & PWRTE_ON & CP_OFF & BOREN_ON & LVP_OFF & CPD_OFF & WRT_OFF...
  12. R

    Big Dot Matrix LED Display Signboard 24x116 pixel

    for .bmp files the generator generates 0xFF and no pattern. what to do to display patterns from file??
  13. R

    Big Dot Matrix LED Display Signboard 24x116 pixel

    every thing is the same as Persian_men has shared .......i have only changed my .bmp file in order to test that whether it can generate pattern for .bmp file or not?
  14. R

    Big Dot Matrix LED Display Signboard 24x116 pixel

    hi ,i am working on a project to diplay an image on led matrices.i came across ur pattern generator by the name "My Dot Matrix Pattern Generator" on edabord forum .i can write text msg and draw any picture on pattern generator .i want to ask u that can this pattern generator be used to generate...
  15. R

    need help pic877 to max7219

    hey i need it too thanks

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