Line follower using the pic16f877

Replies

• 

  preeste

  oh yeas....i want to also use geared motors, 5 sensors using thered leds and OP505B phototransistors.......furthermore i want to use the L293D h-bridge to control motor....can someone help me with a design for the line follower with all the above requirements......i will be so greatful......please its urgent....like i need it if its possible in the next two days maximum....thanks again
• 

  preeste

  Can someone please help? 4 days and no help! 😔
• 

  Kaustubh Katdare

  preeste

  Can someone please help? 4 days and no help! 😔

  Replies will take some time. You will have to be bit patient!
  
  -The Big K-
• 

  John Connor

  look this link
  
  #-Link-Snipped-#
  
  replace the pic for the 16f877
  
  and configure this code in the pic
  
  
  DEFINE LOADER_USED 1
  J VAR BYTE
  SYMBOL ENAL = PORTB.0
  SYMBOL ENAR = PORTB.1
  SYMBOL LAMOT = PORTB.2
  SYMBOL LBMOT = PORTB.3
  SYMBOL RAMOT = PORTB.4
  SYMBOL RBMOT = PORTB.5
  RIR0 VAR BYTE
  RIR1 VAR BYTE
  RIR2 VAR BYTE
  RIR3 VAR BYTE
  TRISB = 0
  ADCON1 = $00
  J = 240
  INI:
  ADCIN 0,RIR0
  ADCIN 1,RIR1
  ADCIN 2,RIR2
  ADCIN 3,RIR3
  INICIO:
  IF RIR0 > J AND RIR1 > J AND RIR2 > J AND RIR3 > J THEN INI
  IF RIR0 <= J AND RIR1 <= J AND RIR2 <= J AND RIR3 <= J THEN INI
  IF RIR0 > J AND RIR1 > J AND RIR2 <= J AND RIR3 <= J THEN FORWARD
  IF RIR0 > J AND RIR1 > J AND RIR2 > J AND RIR3 > J THEN FORWARD
  IF RIR0 > J AND RIR1 <= J AND RIR2 <= J AND RIR3 <= J THEN BACK
  IF RIR0 <= J AND RIR1 > J OR RIR2 > J OR RIR3 > J THEN BACK
  IF RIR0 > J AND RIR1 > J AND RIR2 > J AND RIR3 <= J THEN LEFT
  IF RIR0 <= J AND RIR1 > J AND RIR2 > J AND RIR3 <= J THEN LEFT
  IF RIR0 > J AND RIR1 > J AND RIR2 <= J AND RIR3 > J THEN RIGHT
  IF RIR0 <= J AND RIR1 > J AND RIR2 <= J AND RIR3 > J THEN RIGHT
  IF RIR0 > J AND RIR1 <= J AND RIR2 > J AND RIR3 <= J THEN MAXLEFT
  IF RIR0 <= J AND RIR1 <= J AND RIR2 > J AND RIR3 <= J THEN MAXLEFT
  IF RIR0 > J AND RIR1 <= J AND RIR2 <= J AND RIR3 > J THEN MAXRIGHT
  IF RIR0 <= J AND RIR1 <= J AND RIR2 <= J AND RIR3 > J THEN MAXRIGHT
  goto INI
  FORWARD:
  ENAL = 1
  ENAR = 1
  LAMOT = 1
  LBMOT = 0
  RAMOT = 0
  RBMOT = 1
  GOTO INI
  
  BACK:
  ENAL = 1
  ENAR = 1
  LAMOT = 0
  LBMOT = 1
  RAMOT = 1
  RBMOT = 0
  GOTO INI
  
  LEFT:
  ENAL = 1
  ENAR = 0
  LAMOT = 1
  LBMOT = 0
  RAMOT = 1
  RBMOT = 0
  GOTO INI
  
  RIGHT:
  ENAL = 0
  ENAR = 1
  LAMOT = 0
  LBMOT = 1
  RAMOT = 0
  RBMOT = 1
  GOTO INI
  
  MAXLEFT:
  ENAL = 1
  ENAR = 1
  LAMOT = 1
  LBMOT = 0
  RAMOT = 1
  RBMOT = 0
  GOTO INI
  
  MAXRIGHT:
  ENAL = 1
  ENAR = 1
  LAMOT = 0
  LBMOT = 1
  RAMOT = 0
  RBMOT = 1
  GOTO INI
  
  END
  
  TAKE CARE
  
  ATT
  
  JOHN CONNOR
• 

  jmn

  I am building a line follower. I use a pic16f877a to read the sensors and to control the motors. To drive the motors I use a l298, line sensors: CNY70, differential drive with tamiya gearbox.
  
  This is the robot if this can help you..
  pic16f690 | Flickr
  
  I am testing now the pcb and programming the pic. Tamiya gearbox is a good way to build the differential drive, it is cheap an fast.