Snap, GoBLE and Pop

"snap, gobble and pop"

An IoT project written in Go for BLE devices, to be distributed as a Snap.

Uses:

• Go-BLE
• Paho

The Snap binary currently exists in this repo. It will be added to the Snap Store once it is past proof-of-concept stage.

Current

Current iteration is proof-of-concept. When activated, it scans for all BLE devices, packages info found about devices as JSON, then sends that JSON out as MQTT.

To install snap:

1. Clone this git repo.
2. Navigate to /snap/ directory within repo.
3. Enter: sudo snap install --devmode snap-goble-and-pop_0.2_amd64.snap

To activate the snap:

1. Make sure /snap/bin/ exists in your $PATH
2. Make sure you have a BLE device attached to your system
3. Enter: sudo snap-goble-and-pop

By default:

• The snap connects to an unencrypted broker on localhost port 1883 running TCP (default "tcp://127.0.0.1:1883"). This can be changed by passing the -broker flag to the snap.
• The snap scans for a duration of five seconds (default 5s). This can be changed by passing the -du flag.
• The snap publishes to MQTT topic ble/test (default "ble/test"). This can be changed by passing the -topic flag.

A complete list of flags can be generated by passing the --help flag.

To view the MQTT messages using the defaults:

1. Run an MQTT broker such as Mosquitto on the local machine.
2. Point an MQTT client to the broker and subscribe to the topic. For example, if using mosquitto.sub, enter: mosquitto.sub -h 127.0.0.1 -p 1883 -t ble/#.

Future

Plan is to develop a modular thermostat using BLE thermometers, a central controller, and relays, IR blasters, and device APIs to control window air conditioners and plug-in heaters.

Next steps:

• Add security configurations to snap so snap can connect to AWS for example.
• Target known BLE devices and pass only relevant information.