Sensors

In addition to manually-entered records, farmOS also provides a framework for importing data from automated environmental sensors. The Farm Sensor module adds a Sensor asset type, which can be tracked like any other asset. Sub-modules (like Farm Sensor: Listener) extend the Sensor asset type by providing integration with external devices. Additional modules can be built to connect to specific types of sensors. It is also possible to assemble your own sensors with inexpensive components and send their data to farmOS.

Farm Sensor: Listener

The Farm Sensor: Listener module is a general-purpose sensor sub-module that provides a simple "Listener" sensor type. Each sensor asset that is denoted as a listener receives a unique URL with a public and private key that data can be pushed to using standard HTTP requests and JSON-encoded data. Data is stored in the database and is displayed in the sensor asset within farmOS.

Specific instructions are provided in the farmOS interface itself when you create a listener sensor asset. Refer to those instructions for more information, as well as sample code and JSON formatting.

The listener module is useful for simple data streams. For more complex data, a more customized sub-module may be necessary.

Open Pipe Kit

The Open Pipe Kit project provides a command-line script that can be used to push data to farmOS from various sensors using the Farm Sensor: Listener module. The following video demonstrates how to set it up. For more information about Open Pipe Kit, refer to: http://openpipekit.github.io

Open Pipe Kit farmOS CLI: https://github.com/openpipekit/farmos-cli

Notifications

The Farm Sensor: Listener module comes with a basic alert notification mechanism that can be configured to send an email or text message if an incoming value is above or below a given threshold.

Text messages: It is possible to send text messages by entering a special email address that corresponds to your phone number and mobile carrier.

Here are the domain names used for some of the more popular phone carriers:

Use the phone number of the person you are texting followed by the domain name corresponding to their carrier. For example, if you are sending a text message to a Nextel subscriber with the phone number 232-232-2323, you would enter 2322322323@messaging.nextel.com.