anshu_de
Newbie level 2
Hello frnds...
I am making this wireless equipment control project using 89c51 microcontroller link is below..
**broken link removed**
The RF section is working fine. but the problem is when i set the time for one device let say 5 sec for device 1 and 10 second for device 2.
which means device 1 should switch off after 5 sec and device 2 after 10 sec(according to its programming). But in my case All four relay connected are getting off after 5 sec (lower time).
I have checked the circuit many times, tried replacing the encoder,decoder,multiplexer,relay driver ic... everything.. but the problem still is there..
This is a working project because i have made this few month back, it worked fine without any problem.
But i have no idea this time. why it is not working properly.
please help me with this... i have to submit this within 1 week.
I am making this wireless equipment control project using 89c51 microcontroller link is below..
**broken link removed**
The RF section is working fine. but the problem is when i set the time for one device let say 5 sec for device 1 and 10 second for device 2.
which means device 1 should switch off after 5 sec and device 2 after 10 sec(according to its programming). But in my case All four relay connected are getting off after 5 sec (lower time).
I have checked the circuit many times, tried replacing the encoder,decoder,multiplexer,relay driver ic... everything.. but the problem still is there..
This is a working project because i have made this few month back, it worked fine without any problem.
But i have no idea this time. why it is not working properly.
please help me with this... i have to submit this within 1 week.