Power and internet outage alarm

Power and connectivity alarm

In many areas you need to know if electric power or internet connectivity is available. For example, if you run food store you want to know if electric power is available. If not, your fridge doesn't work.

This device sends alarm using Sigfox network.

Power

This device monitors avaibility of electric power. Just connect this device to power socket using 5 V DC adapter and if there is no power at power socket it sends message. Message is sent only when power source (power socket vs. battery module) changed.

Connectivity

You can connect this device to PC and run ping.py application to chcek if internet is available. It is recommended to modify application for your needs. If you lost connectivity device sends message.

Message format

• byte - 0x79 'y' device has power on USB, 0x6E 'n' no power on USB connector
• byte - 0x6F 'o' connectivity is available, 0x65 'e' no connectivity
• byte - battery voltage, to get voltage add 100 and divide by 100

Example 6e6fa8

6e - running on battery

6f - last information about internet connectivity was OK

a8 - battery level is 2.68V, (168 + 100) / 100

Hardware

Device is using BigClown hardware. Mini Battery module is working like UPS so we can send message without electric power from power socket.

• Core Module or Core Module NR
• Mini Battery Module
• Sigfox Module if you have Sigfox contract or Sigfox Module with Subscription of MySigfox Platinum Service for 3 Years with Sigfox contract

Device firmware

You will need to uplod firmaware to Core Module. Use BigClown Firmware instruction.

Sigfox integration

Use Sigfox callbacks to integrate with another systems. For example Microsoft Flow.

Possible and recommended changes

• LoRa Module
• Change ping.py to monitor internet connectivity as you need. For example ping your own server.

License

This project is licensed under the MIT License - see the LICENSE file for details.