IoT with AME

IoT with AME - The Internet of things, with Arduino, MQTT, and ESP8266

Planned content

What would I like to write about?

• MQTT
  • finite state machine of the protocol
  • most simple application (QoS 0)
  • encoding and decoding
  • more sophistication (QoS 1, 2), limits of the Arduino environment (like, conversational state)

• The Stacks
  • HW stack: Arduino, ESP8266, additional hardware
  • SW stack: PubSubClient, Client -adapter, ESP8266 or, alternatively, AC_MQTT & AC_ESP8266
  • SW problems (SoftwareSerial, memory use, bugs)
  • HW problems (current spikes, general unreliability of the ESP)

• Tools
  • AC.programmer (SPI programming, freed-up serial interface, 2k more flash mem, logging via I2C)
  • Monitoring MQTT publications with MQTT-Spy
  • MoquetteMon - Add-on to the Java OpenSource MQTT Broker Moquette (shows IP, QoS, subscribed-to and published topics etc.)

• Naming and Behavioral Conventions
  • MQTT-ID
  • devices
  • capabilities (reporting)
  • topics

• Pitfalls
  • Fun with power LAN adapters (don't plug in your fridge)
  • Returning pointers to method-scope variables

• Challenges
  • Updating device configuration (ie, MQTT/ WLAN)
  • Updating device code