How to use Arduino UNO Board for IoT?

tri413 · October 22, 2015, 7:47pm

I have been very impressed with IBM's BlueMix IOT offerings. It took me awhile to get it all workings...partly because their examples had some bugs in them. Now I have my Uno with Ethernet shield uploading MQTT over http://. My shield was only like $6 on eBay and is totally worth it to me. The MQTT library I'm using is written for the Ethernet library. I'm not sure if it would work with 8266.

My Arduino Dashboard:
http://savagesens.mybluemix.net/

Code on GitHub:

github.com

Tri413/Arduino/blob/master/MQTT_IOT_Sensor_Rel/MQTT_IOT_Sensor_Rel.ino

/*
 MQTT IOT Example
 - continuously obtains values from the Virtuabotix DHT11 temperature/humidity sensor
 - formats the results as a JSON string for the IBM IOT example
 - connects to an MQTT server (either local or at the IBM IOT Cloud)
 - and publishes the JSON String to the topic named quickstart:MY_MAC_ADDRESS
 */

#include <SPI.h>
#include <Ethernet.h>
#include <PubSubClient.h>

// Update this to either the MAC address found on the sticker on your ethernet shield (newer shields)
// or a different random hexadecimal value (change at least the last four bytes)
byte mac[]    = {0xDE, 0xED, 0xBA, 0xFE, 0xFE, 0xAA };
char macstr[] = "deedbafefeaa";
// Note this next value is only used if you intend to test against a local MQTT server
byte localserver[] = {192, 168, 1, 23 };
// Update this value to an appropriate open IP on your local network
byte ip[] = {192, 168, 1, 177};

This file has been truncated. show original

IBM Tutorial:
http://www.ibm.com/developerworks/cloud/library/cl-bluemix-arduino-iot1/index.html

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How to use Arduino UNO Board for IoT?

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