# Raspberry Pi Import Integration

[Raspberry Pi](http://www.raspberrypi.org/) is a credit-card-sized single-board computer. Because it is low-cost and easy to equip with various types of sensors, using Raspberry Pi as a cloud data logger is one of its ideal use cases.

You can import sensor data from Raspberry Pi into Treasure Data.

# Install Raspbian

[Raspbian](http://www.raspbian.org/) is a free operating system based on Debian, optimized for the Raspberry Pi. Install Raspbian on your Raspberry Pi by following the instructions in the blog post below:

- [Getting Started with Raspberry Pi: Installing Raspbian](http://www.andrewmunsell.com/blog/getting-started-raspberry-pi-install-raspbian)


# Install Treasure Agent (Fluentd)

Next, we’ll install Treasure Agent (Fluentd) on Raspbian. Raspbian bundles Ruby 1.9.3 by default, but we need the extra development packages.


```
$ sudo aptitude install ruby-dev
```

We’ll now install Treasure Agent (Fluentd) and the necessary plugins.


```
$ sudo gem install fluentd
$ sudo fluent-gem install fluent-plugin-td

Or, you can use fluent-bit instead of fluentd. See the detail in the following doc.
http://fluentbit.io/documentation/0.12/installation/raspberry_pi.html
```

# Configure and Launch Treasure Agent

[Sign into your Treasure Data account](https://console.treasuredata.com/users/sign_in). You can get your account’s API key from the [users page](https://console.treasuredata.com/users/current). If you don’t have an account, [schedule a free trial](https://www.treasuredata.com/request_trial/) to get started.

Prepare the fluent.conf file with the following information, including your API key.


```
<match td.*.*>
  type tdlog
  apikey YOUR_API_KEY_HERE

  auto_create_table
  buffer_type file
  buffer_path /home/pi/td
</match>
source
  type http
  port 8888
</source>
source
  type forward
</source>
```

Finally, launch Treasure Agent (Fluentd) via your terminal.


```
$ fluentd -c fluent.conf
```

# Upload Test

To test the configuration, just post a JSON message to Treasure Agent via HTTP.


```
$ curl -X POST -d 'json={"sensor1":3123.13,"sensor2":321.3}' \
  http://localhost:8888/td.testdb.raspberrypi
```

If you're using Python, you can use python logger library.
Now, access the databases page to confirm that your data has been uploaded to the cloud properly.

- [Treasure Data: List of Databases](https://console.treasuredata.com/databases)


You can now issue queries against the imported data.

- [Treasure Data: New Query](https://console.treasuredata.com/query_forms/new)


For example, these queries calculate the average sensor1 value and the sum of sensor2 values.


```
SELECT AVG(sensor1) FROM raspberrypi;
SELECT SUM(sensor2) FROM raspberrypi;
```

# Conclusion

Raspberry Pi is an ideal platform for prototyping data logger hardware. By combining Raspberry Pi and Treasure Data, we can easily analyze the physical world in the cloud.