Raspberry Pi Door Alarm

This is an example of a door alarm written in Python on Raspberry Pi.

Installation

• Copy alarm.py to the pi's home directory.
• Add your Pushover API creds to AWS SecretsManager. Replace TOKEN and USER_KEY with the token and user key from Pushover. Take note of the ARN. You'll need this to start the script. aws secretsmanager create-secret --name api_key --secret-string "{\"token\": \"TOKEN\",\"user\": \"USER_KEY\"}"
• Open crontab. crontab -e
• Add the following line to your crontab. Replace $SECRET_ARN with the name of the secret in AWS SecretsManager. @reboot sleep 120 && python3 /home/pi/alarm.py $SECRET_ARN >> /home/pi/alarm.log 2>&1

Software

• A Raspberry Pi with Rasbian Lite installed
• Network connectivity
• Python3
• The follwing Python modules: boto3, gpiozero
• AWS SecretsManager (To store Pushover API credentials)

Hardware

• Magnetic Reed Switch
• Raspberry Pi Zero, Raspberry Pi 2 or better
• Soldering Eequipment (Iron, Solder, thin guage wire)

Solder the the leads from the magnetic reed switch to GPIO2 and ground, polarity is not important.