The NodeMCU is an inexpensive WiFi-enabled microcontroller board based on the ESP8266 chip that allows for programming of input/output pins to create inexpensive Internet of Things devices. For under $4, it can be programmed using C or Lua to build projects like remote doorbells, flood detectors, WiFi sniffers, or devices that control based on ambient light or trigger based on parking, and connects to WiFi to interface over HTTP.

1. Wifi enabled IoT device
For the price of a cappuccino!

2. NodeMCU – what is it?
●
An Arduino-like device
●
Main component: ESP8266
●
With programmable pins
●
And built-in wifi
●
Power via USB
●
Price: under €4

3. What can do you with it?
●
Program it
●
C or LUA
●
Access it via Wifi
●
(e.g. HTTP)
●
Connect pins to
any device
●
in or out

4. Create your own...
●
Remote controlled doorbell
●
Flood detector
●
Wifi sniffer
●
Ambient light based on current sunshine
●
Automatically switch on the jacuzzi when you
park the car

5. Develop for it
1.Install a device driver if on OSX:
/dev/cu.SLAB_USBtoUART
(Windows COMX, Linux /dev/ttyUSB0)
2.Install the Arduino IDE: https://www.arduino.cc/en/Main/Software
3.Install the ESP8266 Addon:
https://learn.sparkfun.com/tutorials/esp8266-thing-hookup-guide/installing-the-esp8266-arduino-addon
4.Go!

6. Try it out!
●
Blink Light
●
Wifi Scanner
●
Autonomous device with wifi AP