Hi guys, wondering if anyone can help with this electronic circuit.
I'm trying to wire up a PIR/SMS alarm... Without much success!
The problem is the yellow cable, this needs to be constantly 12v.
When the PIR detects movement, (it sends out a 12v positive signal), the yellow cable now needs to drop from 12v to 0v to send out an SMS.
I've tried a few relay circuits (with diodes also) but none have worked (none of them made the yellow drop from 12v to 0v.
Anyone know how to do it? Thank you
I'm trying to wire up a PIR/SMS alarm... Without much success!
The problem is the yellow cable, this needs to be constantly 12v.
When the PIR detects movement, (it sends out a 12v positive signal), the yellow cable now needs to drop from 12v to 0v to send out an SMS.
I've tried a few relay circuits (with diodes also) but none have worked (none of them made the yellow drop from 12v to 0v.
Anyone know how to do it? Thank you