connect Rpi's GPIO to alarm input on security camera NVR? - Raspberry Pi Forums

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hi all,

have project idea i'd use raspberry pi for, i'm not sure it's possible.

have swann security camera system installed @ house sends email alerts every time camera detects motion. want send emails when i'm away (i don't need email alert when walk in front of own camera!)

camera system can set send alerts when "alarm" triggered. idea set python script on pi scan home wifi network once minute nmap cell phone's ip (i set dhcp reservation mac address gets same ip). if pi doesn't find phone on network (meaning i'm away), trigger alarm on camera system allowing send email alerts on motion detection.

problem have right alarm inputs on camera system 12-volt, , pi's gpio header runs @ 5-volt. know how might able connect pi's 5v gpio pins camera system's 12-volt alarm inputs make work?

the gpio pins on rpi 3v3 not 5v! there full time 5v available on couple of pins in gpio header not gpio.
need relay , 12v power source if 1 not available on alarm system.
in order further, need give more technical details alarm system. model number , / or link.


raspberrypi



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