Help, help! Where am I?

Node-RED flow that contains functionality for figuring out where a patient is located, and dispatching ambulances to the location by sending navigation details to ambulance drivers via Google Glass

Getting started

Prerequisites

• A cellphone with internet access
• A pair of Google Glasses
  1. (Handled by course instructors) The user account connected to the Glasses must be signed in at http://glassproxy.mybluemix.net/auth
  2. (Handled by course instructors) The userID of the account must be inserted into the URL of all HTTP requests made to glassproxy in the Node-RED flow.
  • E.g. http://glassproxy.mybluemix.net/timeline/117059099648984892989
  • Check out this video to find out what your Google userID is: https://www.youtube.com/watch?v=dkPHxRDp9wY#t=47

Deploy the example

1. Register for a trial account at http://bluemix.net (IBM's new PaaS offering, launched in July 2014)
2. Log in
3. Click on CREATE AN APP
4. Choose the Boilerplate Node-RED Starter
5. Give your app a name and click Create
6. After a few minutes your app will be running (App Health: Your app is running)
7. Go to https://<your_app_name>.mybluemix.net
8. Click on Go to your Node-RED flow editor
9. Copy the text in exercise1.flow
10. In your Node-RED flow editor click on the menu button (top right)
11. Choose Import From - Clipboard
12. Paste the text your copied in 9.
13. Click Deploy

Running the example

1. Open a browser and go to https://<your_app_name>.mybluemix.net/map

• Some firewalls block websocket packets. It is recommended to use HTTPS in the URL to avoid this

2. Open a browser on your cellphone and go to http://<your_app_name>.mybluemix.net/client/<your_phone_number>

• OR register for a trial account at http://www.twilio.com and insert your Twilio API key and your phone number into the SMS node. Update the URL in Send SMS to patient and click the Inject-button to send an SMS

3. In /client/<your_phone_number> enter the patient's name and click Start tracking
4. View the patient's position in /map
5. Click the marker of the patient to dispatch an ambulance (Google Glass notification)

Tips and tricks

• It is easy to simulate the position of the patient with Google Chrome on a desktop in Developer Tools.