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Recent content by Sheritronics

  1. S

    Problem with single slope ADC circuit

    Can you please design me a working circuit i really need it :'(
  2. S

    Problem with single slope ADC circuit

    Can you do me favor if u could design it again as you said so that will be easy to understand.. but initially it helped little bit to understand some how this adc can be implemented tnx!
  3. S

    Problem with single slope ADC circuit

    my logic is that when the output off U2 is - then not gate will resets the counter simply
  4. S

    Problem with single slope ADC circuit

    i am using the same logic but still not getting why this circuit is not working
  5. S

    Problem with single slope ADC circuit

    I am using the given below circuit the problem is that counter doesn't counting, wat to do i am using multisim 11 to simulate
  6. S

    timer1 overflow interrupt by using 20Mhz cystal Pic16f877a

    Need help! i have to generate 1sec overflow interrupt with timer1 in pic16f877a any special logic?
  7. S

    Need help in PWM code

    org 0x00 include <P16F877A.inc> test equ 0x20 setup bsf STATUS,5 movlw 0x01 movwf TRISB clrf TRISC bcf STATUS,5 clrf PORTB clrf PORTC movlw D'60' movwf CCP1CON movlw D'7' movwf T2CON movlw D'163' movwf CCPR1L banksel PR2 movlw...
  8. S

    [PIC] Ttl to Rs232 level shifter

    yeah I am using 12MHz crystal - - - Updated - - - Any modifications in the code you can made so plz suggest me I have to show this as a project task in my university as soon as possible
  9. S

    [PIC] Ttl to Rs232 level shifter

    org 0x00 #include <p16f877a.inc> __CONFIG _HS_OSC &_WDT_OFF &_PWRTE_ON &_LVP_OFF bsf STATUS,5 movlw 0x24 movwf TXSTA movlw D'77' movwf SPBRG movlw 0x00 movwf TRISC bcf STATUS,5 bsf RCSTA,7 loop movlw A'S' call test movlw A'h'...
  10. S

    [PIC] Ttl to Rs232 level shifter

    Yeah I had tried loop back the circuit is working...... tnx to all. bt is their any issue of crystal oscillator with this circuit I am using 12MHz crystal
  11. S

    [PIC] Ttl to Rs232 level shifter

    I have been working on serial communication from a month but didn't got any success in making the circuit of Rs232/TTL I already had make two circuits when i tested them they are giving me loop back that my circuit is working but after connecting it to my Pic16f877a the circuit start giving the...
  12. S

    Pic 16f877a prob with RRF & RLF command

    I am a beginner to the programming can any one help me why the code below is not working i have to make a sequential led circuit on portE and portB, I am using pic16f877a in Mplab 8.76 DELAY EQU 0x20 DELAY2 EQU 0x21 DELAY3 EQU 0x22 start: ORG 0x00 #INCLUDE "P16F877A.INC" __CONFIG...
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