12-23-2015 07:29 AM - edited 12-23-2015 07:32 AM
12-23-2015 08:14 AM
I am trying to attach the appropriate files.
12-28-2015 04:33 PM
Maybe the 555 is generating unexpected pulses at the beginning which causes the timer to jump ahead. You could use a simple switch to enable the output of the 555 after a while when we know it’s stable.
Check the attached file as a reference.
Regards,
AGJ
12-30-2015 08:43 AM
hello guys.
I have it opened in MS14.
It works OK and begins to count almost immediately - the first pulse is little longer than other but not for much.
take a look at the attached picture -
it seems to me the problem is with PC system and not with schematic.
with hope it helps
thanks a lot
Michael