[SOLVED] [MOVED] Pic16f877a input sensor problem lm324

[hemantc007]

Hello everyone,
First of all I am very thankful to this forum for post and great help while reading diff threads.

After searching a lot I am posting this thread so as I can get help in solving my problem.

mu-pic16f877a
using a development board
LM324n IC for proximity sensor (checked its working i.e led is glowing and voltage of 4v as output)
input port RB2
output PORTA

My aim - To take input from Lm324n and when output is high at lm324 then glow all led of PORTA

Problem-1. When input to RB2 given by direct vcc program works (voltage at pin 4v) i.e LED glows.
2. When input to RB2 given by Lm324n output ------NONE led glow.
note:- voltage at RB2 when connected to lm324n output is .8v
and I have tried many diff combination for Input/ output ports.

I am not able to figure out the problem causing this please help.

Thank you
Regards

 

[hemantc007]

Please Help me with this my project hangs in balance .....PLZ help

And also want to is the output of lm324 analog or digital.........plz urgent

 

[hemantc007]

Problem solved ...
Converted Analog input of lm324n to digital
I used AN0 as input and configured ADC
ADCON1=0x87;
and it worked.

Thank you
Regards