ESP8266

• SoC
• It has GPIO, I2C, ADC, SPI, PWM and more
• It's running at 80MHz
• The ESP8266 chip is made by Espressif
• Boards by various manufacturers

Arduino vs ESP

MQTT

MQTT - What is it?

• invented by IBM in 1999
• M2M Protocol
• extremly lightweight
• small code footprint
• cross-system

MQTT - Who uses it?

MQTT - How does it work?

Publish - Subscribe

MQTT - Demo

/dev/lol Dashboard:

http://mqtt.devlol.org/lol/

MQTT - How do we use it?

What can we do with this?

Watergun

Bullshit Button

Discoball

Fridge

ESPThing

A Boilerplate for IoT with ESP and MQTT

https://github.com/doebi/ESPThing

ESPThing: Making of

Making of Bullshitbutton