Files
HCPBridgeCombo
HCPBridgeESP32
HCPBridgeISR
Hardware
Images
Investigation
WebUI
tools
opendooralert
pushnotifier
opendooralert.py
readme.txt
runme.sh
simulator
.gitignore
README.md
HCPBridgeESP32/tools/opendooralert

#start cron editor
crontab -e

#and add the line:
@reboot /usr/bin/python3 /home/pi/OpenDoorAlert/opendooralert.py

Save and close, and then run
update-rc.d cron defaults