Arduino library for Exosite IoT Platform
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examples Changed for Murano ADC Update. May 31, 2017
extras change schematic path Sep 16, 2015
Exosite.cpp Added support for using SSL via optional parameter in setDomain Apr 11, 2018
LICENSE release 2.3.11 Apr 5, 2016
keywords.txt occupancysensor final updates Sep 16, 2015 Change port with setDomain() method. Apr 12, 2018

About the Exosite Arduino Library

This library allows you to quickly and easily connect your Arduino project to Exosite's Data Platform in the cloud. It connects your project using an Arduino Ethernet shield, Arduino WiFi Shield, or any other networking shield that subclasses the Client class. See the examples folder for both an Ethernet and a WiFi example.

Note: A free account on exosite portals is required:

License is BSD, Copyright 2013, Exosite LLC (see LICENSE file)

Tested with Arduino 1.0.5 and 1.5.5



Troubleshooting information and help can be in the Exosite Community Forum.

Community Forum


  • Arduino IDE must be installed on your computer Arduino IDE
  • Need an internet enabled Arduino system, which is typically done by adding a Ethernet or WiFi.
  • Note: Cellular shields typically will not work with this library as is. They typically require direct AT commands sent to open sockets, send date, etc. The libraries code can be used as reference for what needs to be sent over the modem connection.


Arduino IDE v1.6.2 or greater

Newer versions of the Arduino IDE include a Library Manager GUI that you can use to easily install the Exosite library. Simply open the Library Manager: image Next, search for and install the Exosite library: image When updates are pushed to this repository, return to this interface if you would like to update the Exosite library to the newer version.

Earlier versions of the Arduino IDE

The easiest way to install this library with earlier versions of the Arduino IDE is to simply clone this repo straight to your libraries folder.

cd ~/sketchbook/libraries
git clone Exosite

If you would rather not use the command line or you don't have git installed, click the download button on the right hand side of this page and choose to open the ZIP. Copy the contained folder to your Arduino IDE's libraries folder (inside your sketchbook folder) and Rename it to "Exosite". If you do not know the location of sketchbook folder click on "File->Preferences" in the IDE and you should see it listed.

Note: You will need to restart the Arduino IDE after installing the library.


This library includes examples, which will be available in the Arduino IDE 'Examples' menu directory.



Exosite(Client *_client);
Exosite(char *_cik, Client *_client);
Exosite(String _cik, Client *_client);

_cik: This is used to hard code the CIK into the device can either be a char[] or a String type. This parameter can be omitted when using provisioning.

_client: This is the interface to what ever network device you're using. Must be a subclass of Client such as: EthernetClient, WiFiClient, or YunClient.


void setDomain(const char *domain);

domain: Custom domain to connect to on next connection. eg. ""


boolean Exosite::writeRead(char* writeString, char* readString, char** returnString);
boolean Exosite::writeRead(String writeString, String readString, String &returnString);

writeString: This sets the values to write to certain datasources. eg. "alias3=value3&alias4=value4"

readString: This selects which datasources to read by their alias. eg. "alias1&alias2"

returnstring: This is the string returned with the values requested in readString. eg. "alias1=value1&alias2=value2"


boolean Exosite::provision(char* vendorString, char* modelString, char* snString);

vendorString: The string that identifies the device vendor name.

modelString: The string that identifies the device unique model ID.

snString: The string that identifies the device's serial number.


unsigned long Exosite:time();

Returns the current time as a unix timestamp (number of seconds since 1970-01-01) or 0 for error.

begin (ESP8266 Only)

void Exosite::begin();

Must be called before any other library calls, but after EEPROM.begin() when using provisioning.

Use only if using the following constructor:

Exosite(Client *_client);

Migration from V1

Version 2 no longer sets up the ethernet shield for you. In your code you'll need to replace Exosite exosite(&Ethernet, macData, cikData); with

class EthernetClient client;
Exosite exosite(cikData, &client);

You will also need to remove exosite.init(); and add Ethernet.begin(macData); to your setup() function.

Release Info

v2.5.3 - Release 2017-06-06

  • Added complete HTTP API support.

v2.5.2 - Release 2016-06-15

  • Re-release for versioning problems.

v2.5.1 - Release 2016-06-14

  • Bugfix for "Murano-SmartLightBulb-ThingDevBoard".

v2.5.0 - Release 2016-06-10

  • Add "Murano-SmartLightBulb-ThingDevBoard" example.

v2.4.0 - Release 2016-06-10

  • Add setDomain method.

v2.3.11 - Release 2016-04-05

  • Close socket on HTTP timeout.
  • Add method to disable flash strings, workaround for slowness due to packet-per-byte issue.

v2.3.10 - Release 2015-12-04

  • Fix instantiating *Class objects in examples.

v2.3.9 - Release 2015-12-01

  • Add IP info to Provision example.
  • Fix release process problems.

v2.3.8 - Release 2015-11-12

  • Stability Fixes -- Handles large responses without crashing.
    • Thanks to @keith_fisk on our community forums for debugging & reporting this.
  • Add YunTimestamp Example

v2.3.7 - Release 2015-09-16

  • Make ESP8266OccupancySensor example use provisioning and update readme

v2.3.6 - Release 2015-09-03

  • Add method Exosite::begin() for ESP8266 boards only to be used after EEPROM.begin() to fix provisioning scenarios

v2.3.5 - Release 2015-08-18

  • Removed Serial.print() statements in fetchNVCIK() to prevent printing to serial port before Serial.begin()

v2.3.4 - Release 2015-08-10

  • Fixed time() function, actually returns time now.
  • Added example to use time().
  • Added for new IDE versions.

v2.3.3 - Release 2015-04-20

  • Pushed missing commits from previous release.
  • Put memory debugging stuff behind special ifdef.

v2.3.2 - Release 2015-03-05

  • Added client->stop() before client->connect() to activate and timestamp too.
  • Clarified some serial debug statements.
  • Check that CIK is 40 hex characters on seemingly successful activation before blowing away old CIK.

v2.3.1 - Release 2014-09-17

  • Added client->stop() before client->connect(), the Ethernet shield seems to need this or connect() does nothing.

v2.3.0 - Release 2014-09-11

  • Added EEPROM includes back to all examples.
  • Now leaving socket open between requests.
  • Merged PR from DrewJaworskiRIS to wrap char string in String object constructor before returning. (Thanks!)

v2.2.1 - Release 2014-08-04

  • Added needed include statements to Yun examples.

v2.2 - Release 2014-07-22

  • Added Provisioning Support
    • Added Internal Functions to Read and Write CIK from EEPROM

v2.1.1 - Release 2013-11-04

  • Removed depreciated readWrite method to reduce confusion. readFromCloud and sendToCloud still supported.

v2.1 - Release 2013-11-01

  • Changed readWrite to writeRead to reflect parameter order and platform operation order.
  • Added User-Agent String
  • Added client->flush() just before sending HTTP packet, just in case we received something

v2.0 - Release 2013-10-18

  • Simplified interface to use character strings or Arduino Strings instead of arrays of character arrays. User must now URL encode and decode their own data.
  • Made compatible with Arduino WiFi shield (and anything that similarly subclasses the Client class).
  • Updated examples to use new interface.

v1.1 - Release 2013-07-29

  • Major rewrite to both read and write multiple datasources in one HTTP call.
  • Removed all use of Strings due to stability issues (except for manipulating string object passed to existing functions).
  • Existing sendToCloud() and readFromCloud() changed to use new call internally. External Interface Unchanged

v1.0 - Release 2011-06-05

  • initial version