I am creating my own home security system using the S3A7 prototyping kit. I plan to use a motion sensor to detect movement and then notify my Android device with picture of what it detected. I’ll also secure the data transmission. I want to build my own system rather than use premade system so no one else can capture the data.
Sounds like an awesome project. Look forward to getting your updates. Are you using the BOSCH BMC150 sensor attached to the door? Or, are you using a different type of sensor to detect motion?