Arduino Uno/Yun Samples

This repository contains samples for connecting Arduino Uno/Yun devices to the IBM Watson IoT Platform

The events that are emitted in this sample are:

• Internal sensor temperature

Pre-requisite setup for the 2 flows

Arduino Uno

1. Connect Ethernet / Wifi shield to Arduino Uno

2. Connect Ethernet cable to the Ethernet / Wifi shield

3. Install sketch on desktop / laptop

4. Download Paho mqtt library, for Ardunio, from this link (https://projects.eclipse.org/projects/technology.paho/downloads) in the sketch
   a) To load it into the Arduino IDE, the zip file should be downloaded intact, without unzipping.
   b) Then in the IDE: Select Sketch -> Import Library -> Add Library and select the zip file

5. Connect the USB cable to the Arduino Uno and other end to desktop / laptop which has the sketch installed on it

6. The samples folder of this repository (https://github.com/ibm-messaging/iot-arduino) contains 2 folders, each containining 1 flow - a) Quickstart flow b) Registered flow

7. Compile the 2 skectch codes (corresponding to the flows)

8. Depending upon the requirement, push one of the flows to the Arduino device

9. Reset the Ethernet / Wifi shield

10. Wait for about 10 seconds and the flow starts working

Arduino Yun

1. Configure Arduino Yun to connect to your WiFi Network
2. Follow steps-3,4,5,6 from Arduino Uno
3. Pick the sketch names - quickstart_yun.ino (https://github.com/ibm-watson-iot/device-arduino/blob/master/samples/quickstart/quickstart_yun.ino) / registered_yun.ino (https://github.com/ibm-watson-iot/device-arduino/blob/master/samples/registered/registered_yun.ino) for Arduino Yun
4. Continue following steps-7 to 10 from Arduino Uno

Quickstart flow

1. Modify the clientId, in the sketch code, by providing the values in the following format "d:quickstart:iotsample-arduino:aabbccde02", by replacing "aabbccde02" with the MAC Address of the device
2. Open the quickstart dashboard (http://quickstart.internetofthings.ibmcloud.com/#/)
3. Provide the MAC Address (in case of the example, its aabbccde02) in the textbox "Ready to View data?"

Registered Flow

This has 2 flows

1. Registered Flow from device
2. Registered Flow to device

Registered Flow from device and to device

1. Modify the AUTHTOKEN in the sketch code
2. Modify the MS_PROXY, in the sketch code, by providing the values in the following format "uguhsp.messaging.internetofthings.ibmcloud.com", by replacing "uguhsp" with your organization
3. Modify the CLIENT_ID, in the sketch code, by providing the values in the following format "d:uguhsp:iotsample-arduino:00aabbccde03", by replacing "aabbccde03" with the Device Id and "uguhsp" with the organization and "iotsample-arduino" with the device type that you entered when creating the device.
4. Use mqttpublisher / mqttsubscriber to publish and subscribe the commands / events sent to / received from the Arduino Uno
5. Modify the mac Address (given in the sample as { 0x00, 0xAA, 0xBB, 0xCC, 0xDE, 0x03 } ) by the MAC Address of the Ethernet shield. This applies only for Arduino Uno, no change required in Arduino Yun sketch.

Development

• The code contains comments, which explains how to modify the parameters
• In case of registered flow, you will have to connect to https://internetofthings.ibmcloud.com/dashboard/#/ and create the following
• Organization
• Device
• Auth tokens