One LDR not sensing

[Dark Prince]

Hello Sir, The problem incurred in my Line tracer is that " When one
LDR is sensing other stops sensing and when I adjust the potentiometer
the other one starts sensing and previous one stops"

Circuit is as Shown in this Link ---- Step-13 Verification stage

http://www.whitelinetracer.page.tl/Construction--d--Page3.htm

Please reply sir, It's urgent.

[Shikhar Chouhan]

Try increasing the value of reference pot and then try adjusting your
sensor pots. This should work.
I will recommend you to use Tutorial 1 circuit because it is easier to
understand from the one you are working.

[deepanshu lulla]

sir i am facing a similar problem 15 pin of uln 2003 works..but 16 pin
is not giving any output..i tried an another uln 2003..but still it
didnt work...

On Dec 31 2010, 11:58 am, Shikhar Chouhan <shikhar.n...@gmail.com>
wrote:

[Rahul Jain]

i dont think there should b any problem in that pin of the ic. still
if u have it we can see it after the wrkshop.

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Regards,
Rahul Jain
2nd Year
Department of Electronics and Communication
Maulana Azad National Institute of Technology, Bhopal
+919826082966