Display Environmental Sensor Data

Challenge

Write a program to display measurements being published to the MQTT broker.

Details

• Measurements will be published to the topic data/<id>/<measurement>
  • <id> is a unique identifier for the device that took the measurement
  • <measurement> is the type of value (i.e. "temperature", "humidity", "barometric pressure", etc)
• Messages will be in format <value> <units>
• Display the id, value and units for only one type of measurement

Bonus

In addition to displaying readings, the program should publish control messages

• When the "A" button is pressed, an "on" message should be published
• When the "C" button is pressed, an "off" message should be published
• Messages should be published to the control/<id>/led topic
  • Use the <id> of the last reading received