Hi to all members,
This is a mono stable timer for a alarm system. When the PIR relay is closed, pin 3 of the NE555 must stay low and when the PIR relay open the output at pin 3 must turn on or go high.
Please look at my schematic to see if it's correctly wired.
This is a mono stable timer for a alarm system. When the PIR relay is closed, pin 3 of the NE555 must stay low and when the PIR relay open the output at pin 3 must turn on or go high.
Please look at my schematic to see if it's correctly wired.
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