IoT Research Projectproject 2

Photon Redboard

P1 wifi module.

-cortex m3 processor

-broadcom wifi chip

Tinker app

multiple modes

LM35 Linear Temperature Sensor

Minimum 4V power Supply

-Returns voltage based on temperature (10mv/ºC)

-Analog Output

Maximum 3.3V Return voltage

-Handled by voltage divider.

Errors we needed to resolve (Voltage Reading)

The Cloud

Particle Cloud (formerly Spark)Rest API

Program interactionGET, PUT, POST

Security TSL

How it works

Hosts programs and data

Middleware

Protocols

End Data Application

Our End Data Application is a program that utilises the data received from the Particle cloud and organises it into useful information in a table format. We used curl, a terminal program, to get the data from the server and

make it available locally for our app to use it.

Communicating to the Particle Cloud

Curl is an open source command line tool and library for transferring data with URL syntax.Curl supports FTP, FTPS, HTTP, HTTPS,

IMAP, etc. protocols. First time connection gives us the access tokenThe access token can be obtained from the Particle build

website or using curl too.This gives us full control over the sharing of information to

any third party clients.

Data Processing

Communicates asynchronously using completion blocks

The cloud outputs the data in an improper JavaScript Object Notation (JSON) format

An example of the data:event: Temperaturedata: {"data":"27C","ttl":"60","published_at":"2015-11-21T19:52:39.585Z","coreid":"380046000f47343337373737"}

Data Processing

Save the data to a text file (.txt)

We run a bash script that contains a python script and other commands

As the Python script is executed, it takes only the relevant data and output it it to a comma separated values file (.csv)

Temperature,Time Stamp27C,2015-11-21T19:52:33.584Z27C,2015-11-21T19:52:36.584Z27C,2015-11-21T19:52:39.585Z26C,2015-11-21T19:53:36.600Z28C,2015-11-21T19:53:39.601Z27C,2015-11-21T19:53:42.601Z99C,2015-11-21T19:53:42.601Z

Problems We Faced

Current going to the RedBoard was higher than expected

We implemented the JSON properly on a webpage, but it still did not appear on the page

The text format from when it got saved to the text file was the problem

We could not access the cloud until we carefully reread the document provided by Particle

FIN

From Team 5 to you, Happy Holidays!