Utility that exports and saves your Basis B1 device's uploaded sensor data. You can learn more about Basis at http://www.mybasis.com/

• Log into your Basis account at http://www.mybasis.com.
• Right-click and access your web browser's developer tools by selecting "Inspect Element" (on Chrome - you can also access this by going to the "View->Developer->Developer Tools" menu):

• You should now see the Developer Tools pane:

• Go to the "Data" menu and select "Details":

• Click on the "Network" tab in the Developer Tools frame and reload the page:

Scroll down the list of network requests and look for a request that beings with: "https://app.mybasis.com/api/v1/chart/123a4567b89012345678d9e.json?summary=true..."

The letters after "...chart/" and preceding ".json?..." are your Basis user id! Note this string.

• Set the $basis_userid variable in the script to your Basis user id from the previous step.
• Run the script from an executable location. The easiest way is to place it under your webserver document root, but CURL also works.
• By default, the script will export data from the previous day. You can specify the date you would like to export by appending "?date=YYYY-MM-DD" to the script URL (change YYYY-MM-DD to the actual date you would like to export)

• Your data will be saved in JSON format in the "data/" folder in the format "basis-data-YYYY-MM-DD.json"

• That's it! (for now).

Basis currently returns the following data points. They will represent an average (for heart rate) or sum (steps) over the previous 1-minute period:

• Time - time reading was taken
• Heart Rate - beats per minute
• Steps - number of steps taken
• Calories - number of calories burned
• GSR - Galvanic skin response (i.e., sweat/skin conductivity. Learn more about GSR here - http://en.wikipedia.org/wiki/Skin_conductance
• Skin Temperature - skin temperature (degrees F)
• Air Temperature - air temperatute (degrees F)

There are some other aggregate metrics included in the reponse such as min/max/average/standard deviation metrics for each set of data.

• You can set up a cron to run once per day to automatically grab your previous day's data (assuming you are syncing your device each day)

• If you want to archive data across a date range you can use curl's [ ] syntax to do it easily (thanks to @Edrabbit for the tip!). For example, to get all of May cached in /data:

  curl http://localhost/basisdataexport.php?date=2013-05-[01-31]