The pieces

Hardware
Rotating beacon Light
Esp8266 Huzzah boards
434 mhz radio modules transmitter and receiver
RF controlled power outlets to act as relays
Wifi networks
VM to run Docker images on, because everything is better with Docker.

Software
Jenkins
Slack
Node.js
Docker
Arduino
MQTT message broker
Splunk with http collectors
Docker logging driver.

Current State
When there is a Jenkins build failure an alert is posted to a Slack channel. In order for a developer to know there is an error they need to constantly monitor Slack, which is a suboptimal use of time.

Beacon Solution
We want a developer to be notified in the real world when there is a build failure without breaking their productivity. Enter the beacons. Lets take a step back and explain the topology that we are working with.