Help!!
want to make a simple GCSE circuit that triggers both an monostable and an astable by the use of an LDR (and simple infrared phototransistor).
The idea is for an alarm system that is triggered by light then does not go off for 30 seconds, (will use counter!!)
i dont know how to do it?????
cheers, jd
want to make a simple GCSE circuit that triggers both an monostable and an astable by the use of an LDR (and simple infrared phototransistor).
The idea is for an alarm system that is triggered by light then does not go off for 30 seconds, (will use counter!!)
i dont know how to do it?????
cheers, jd