In this workshop we talk about how NodeMCU can be used to create a cost-effective solution to deploy your Internet of Things project, together with AWS IoT.

1. IoT on AWS and NodeMCU
FOR LESS THAN 5 EUROS
June 2016
01

2. About Johann
• Tech Evangelist @Stylight
• 15+ years in tech
• In Germany for 2 years
• 7 years in San Francisco
doing startups
• Organizer of many meetups
2

3. Tweet me!
@romefort
@StylightTech

4. What are you going to learn?
4
• Discover ESP8266/NodeMCU
• Introduction to AWS IoT
• Hands-on
• Connecting a NodeMCU board
• Configuring Arduino environment for NodeMCU
• Installing AWS SDK
• Publishing sensor data to AWS IoT
• Trigger rules to invoke Lambda function

5. ESP8266
5
• Cheap: $2
• Very low power
consumption
• WIFI
• Deep-sleep mode

6. NodeMCU
• Micro-usb for flashing
and power
• 3v - 5v: Support Arduino
sensors
• Compatible Arduino/Lua
• CHEAP
6

7. You said CHEAP?
7

8. Why?
8
• Cheap is good in IoT because
it scales
• But no direct support of AWS
IoT because no TLS 1.2
module yet in ESP8266
• Hackers always find
workarounds

9. If you just want to play around/prototype
9

10. Introduction to AWS IoT
10
• Serverless way to connect your IoT devices and start
processing data
• Supports MQTT, HTTP
• Secure - communication through use of X.509 Certificates
• Can connect huge amount of sensors, store and process the
data in real-time

11. AWS IoT Architecture
11source: http://docs.aws.amazon.com/iot/latest/developerguide/aws-iot-how-it-works.html

12. What’s a Thing?
12
• An IoT Device
• Sensors, actuators,
• In our case a NodeCMU board

13. What’s the Message Broker?
13
• Used to securely exchange messages following the publish-
subscribe pattern, between IoT applications and Things.
• MQTT to publish/subscribe
• HTTP to publish
• Note: MQTT uses TLS 1.2 which is not available in NodeMCU
• Let’s use HTTP then!

14. What’s the Rule Engine?
14
• Used to process messages and talk to other AWS
components like Lambda, DynamoDB, etc
• SQL-Based language to select specific messages
to be passed along.

15. What are Thing Shadows?
15
• Devices sometimes go offline
• A Thing Shadow provide a persistent
representation of a Thing
• A Thing can sync its state to its Thing Shadow
through the REST API

16. AWS IoT Console
16

17. Hands-on!
June 2016
01

18. We are going to:
18
• Create a Thing in AWS IoT
• Publish sensor data from our NodeMCU to
update our Thing Shadow
• Have a look at the MQTT Client
• Create a Rule to trigger a lambda when
humidity is > 50%
• Publish the data to Slack

19. The Fritzing
19

20. Create a Thing
20

21. Open Serial Monitor
21

22. MQTT Client
22

23. Creating your Lambda
23

24. Configuring your Lambda
24

25. Write your Lambda
25

26. Questions?
Twitter: @romefort
tech.stylight.comRead our blog:

27. www.stylight.com