Vernier Software and Technology
Vernier Software & Technology
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How do I set up Google Science Journal for data collection with Go Wireless sensors?

The information below is about using Google Science Journal with Vernier's now-discontinued Go Wireless sensors only. Vernier and Google introduced support for Go Direct sensors with Graphical Analysis 4 for Android in 2019. For information on this newer configuration see, as well as TIL 4413: How do I use Google Science Journal with Go Direct sensors on Android?.

The remaining information refers to Android devices only running Graphical Analysis GW and the older Go Wireless products.

Currently the Google Science Journal app can support Go Wireless sensors. Go Wireless sensors are no longer available, having been replaced by Go Direct sensors.

The Google Science Journal app for Android can be used with many Vernier Sensors. Any Go Wireless sensor supported by Graphical Analysis GW, or the Go Wireless Link, can be used with Science Journal. Also note that Science Journal is capable of collecting from multiple Go Wireless sensors simultaneously, unlike Graphical Analysis GW itself.

For a list of sensors compatible with Graphical Analysis GW for Android and Go Wireless Link:

The Science Journal app depends on the presence and correct configuration of Vernier's Graphical Analysis app for Android. You do not have to use Graphical Analysis in day to day use of Science Journal, but Graphical Analysis must be present and some one-time setup in Graphical Analysis must be performed.

Initial setup:

* Download and install the Vernier Graphical Analysis GW app from Google Play. Version 3.1.1 is the minimum version that supports Science Journal.
* Launch Graphical Analysis GW.
* Tap + to start a new experiment.
* Tap Go Wireless Sources.
* You may be prompted to grant permission for Graphical Analysis GW to have location information. This is required as Bluetooth communication requires location permission. Vernier does not collect any location information.
* Proceed to use the Science Journal app.

Follow these steps to grant permission only if you have previously launched Graphical Analysis and then denied location permission:
* Open the android device settings app by swiping down from the top of the screen twice and clicking on the gear icon.
* Tap the Apps subsection of the settings app.
* Tap the Graphical app entry with the GA icon
* Tap permissions
* Enable the LOCATION permission

The remaining steps are all concerned with the operation of Google's Science Journal app. See Google for more details on using the Science Journal app.

* Launch Science Journal version 1.2.220 or newer.
* If this is the first time the app has been run, you must certify that you are over 13 years old, and follow the tutorial.
* Turn on your Vernier Go Wireless device and connect sensors as needed.
* Create a Project, and create an experiment. Tap the observations icon to see sensor readings.
* Tap the Gear+ icon in the upper right corner of the Science Journal app to open the "Sensor Settings" view to start a search for available sensors.
* Note the spinner next to the Vernier tab. It indicates that a search for wireless devices is ongoing. Each search lasts 10 seconds.
* Find the Vernier subsection under "Available Devices". The section is will not be visible if a sufficiently recent version of Graphical Analysis is not installed.
* If no sensors are present under the Vernier header, click the spinner to start a new search.
* Persistent lack of Vernier sensors appearing at this point is a strong indication that the user hasn't accepted the LOCATION permission as described above. It is also possible that there are no Go Wireless sensors nearby, or that the search for Go Wireless devices has timed out and needs to be restarted by tapping the spinner next to the subsection of "Available Devices" for Vernier devices.

Sensor Configuration

* the only sensor configuration possible in Science Journal is the calibration of the Go Wireless® Electrode Amplifier, order code GW-EA. A user may see diagnostic information for all sensors in the same screen (model number, firmware version, etc).
** when connecting to the Electrode Amplifier, a config screen will appear. In pH mode, the calibration details and controls are at the bottom of this screen.
** to return to this config screen for any sensor, go to the Sensor Setup page by clicking the Gear+ in the top right corner, then click the gear icon associated with the sensor in the list of paired Vernier sensors.
* This configuration screen also contains diagnostic information for all sensors.

Data collection from Go Wireless Sensors in Science Journal

Science Journal offers the ability to collect from multiple Go Wireless sensors. A user may also choose to collect from some or all paired sensors in each run as described below.

For any combination of sensors, from the Sensor Setup page, click the sensors for which you would like to collect data.

After closing the sensor setup screen, you will find a "Sensor Card" containing tabs for each of the sensors you selected. Collection in this state will only include data for the sensor whose tab is exposed.

If you want to collect from all the sensors you selected, create cards for each by clicking the plus symbol beneath the bottom sensor card.

If you want to exclude some sensors that you previously selected, choose "close card" for any sensor you wish to exclude. To create a card for a given sensor, create cards for all the tabbed sensors until the sensor you want has a card.

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