samseif6
Newbie level 4
PIR Motion Sensor project.
The PIR Sensor used in this project was designed for another wireless Alarm system. I had to use this part of the system because, PIR sensor/circuits are not easily available at my area.
The problem is, how can i evade the timer which triggers a logic high output that is timed and goes high after every 2 hours.
I have short wired the high output and ground to a cell phone dial button, which subsiquently dials a pre-set number on a high signal.
All is well, when the sensor senses sudden heat motion, it triggers the circuit, i get a call. But it also gives me a call after every 2 hours, on accurate intervals.
It would really help if i could know which component compels the 2 hour timer, and how i could evade it, so that the security sytem would only give me a call on actual motion triggers.
Bellow are diagrams on the circuit. Your advice will be appreciated. Thanks.
The PIR Sensor used in this project was designed for another wireless Alarm system. I had to use this part of the system because, PIR sensor/circuits are not easily available at my area.
The problem is, how can i evade the timer which triggers a logic high output that is timed and goes high after every 2 hours.
I have short wired the high output and ground to a cell phone dial button, which subsiquently dials a pre-set number on a high signal.
All is well, when the sensor senses sudden heat motion, it triggers the circuit, i get a call. But it also gives me a call after every 2 hours, on accurate intervals.
It would really help if i could know which component compels the 2 hour timer, and how i could evade it, so that the security sytem would only give me a call on actual motion triggers.
Bellow are diagrams on the circuit. Your advice will be appreciated. Thanks.
