MQTT Raw Data to Cayenne Dashboard, using the great Nick O'Leary's PubSubClient (Arduino Client for MQTT, https://github.com/knolleary/pubsubclient)
What does it do? This sketch will attempt to connect to Cayenne MQTT server via Wifi, subscribe to a "dashboard button" topic, to turn on/off the esp8266 built in led. Also it will publish temperature readings from a Dallas DS18b20 digital temperature sensor.
In a near future, the esp8266 (NodeMCU v2) should act as a smart thermostat, controlling my central heater/boiler. It should be possible to remotely check ambient temperature and boiler status using Cayenne Dashboard and turn the heater on/off (in case I left home in a hurry!, etc.)
Inspired in several tutorials and sketches mashed up, mainly.. Andreas Spiess https://github.com/SensorsIot Terry King terry@yourduino.com Markus Ulsass https://github.com/markbeee
Marc / spacefolder