Edu-Logger 900-204 User manual

Edu-Logger Light
Logger Sensor Guide
900-204

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Edu-Logger light logger sensor
900-204
The Light Sensor can be used for any science
experiment where light intensity measurements are
required for Chemistry, Physics, Biology,
Environmental Science, etc.
The sensor comes pre-calibrated so you can start
experimentation right out of the box using this guide.
This sensor can be used to take light measurements in
low, medium and high light intensity environments
such as in classrooms and in open sunlight. The sensor
can be used to measure both fast light changes such as
those produced by light bulbs connected to an AC
supply, as well as the light intensity of the bulb or near
steady levels outside on a sunny day.
Hundreds of possible experiments that can be
performed with the 900-204 sensor are: Monitoring
daily light levels in ecological systems, studying
photosynthesis, chemical reactions where light is
emitted, studying the effect of changing voltage on a
light source’s intensity and light intensity with varying
distances and mediums.
The measurement unit for all three data collection
ranges (low, medium, high) is the lux
Lux (lx, or lux): The SI unit of light intensity.

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Quick start procedure:
PC or Mac Computer
Materials needed:
900-204 Light Sensor
900-213 USB Module
USB to mini USB cable (which comes with the
900-213)
Your light sensor needs to be connected to a 900-213
module. The 900-213 module then connects to a
computer via a USB to mini-USB cable. Please note
that you cannot plug the light sensor directly into the
computer.
Resident PC software and browser based application
can be downloaded for free at
www.edulab.com as well as a full software user guide.
Note: Make sure not to download and install both
types of software they will conflict on the computer.
Procedure:
1. Install the Edu-Logger software.
2. Connect the 900-213 module to the PC or Mac.
3. Connect the light sensor to the 900-213 module
(they directly plug together). Please note no
calibration is required for this sensor.
4. Open the Edu-Logger software.
5. Once a light sensor logo appears on the left side
of the screen the probe has been automatically
identified and you can begin experimentation.
6. If the light sensor is not automatically identified,
click the “Search for sensors” icon to find the
sensor.
7. Select the “On-line experiment” button; this will
open a graph below.

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8. Click on the “Module setup” button located on
the light sensor icon in the module window to
change the sensor's settings if need be.
9. Click on the experiment set up button to change
the experiment settings if need be (experiment
duration for example).
10. The light sensor will give a live reading in the
box to the left of the screen while plugged in.
11. To run an experiment and collect data either click
“Run experiment”.
12. To end data collection early, click “Stop
experiment”.
Tablet, smart phone device
Materials needed:
900-204 Light Sensor
900-268 WiFi Module
900-215 Battery Module
Your light sensor needs to be connected to a 900-268
module. The 900-268 module will create a closed
Edu-Logger WiFi network which will stream the Edu-
Logger data to the device of your choosing. Once your
device is wirelessly connected to the Edu-Logger
network you can run experiments and collect data
through a browser of your choosing.
Procedure:
1. Connect the light sensor directly to the left side
of a 900-268 module (no wires required).
2. Connect a 900-215 module to the right side of the
900-268 module.
3. Although not required, we recommend plugging
the 900-215 to an outlet using a USB to mini
USB charger (such as a typical cell phone
charger). The 900-268 module will run for 15-75

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minutes (depending on the sensor) without being
plugged in.
4. The 900-268 can be powered directly using a
mini to USB cord and plugging it into your
computer or a wall charger. Please note this
function is only available on 900-268 units with
the USB icon on the cover.
5. For further 900-268 instructions or the 900-268
quick start guide please visit:
www.edulab.com
6. The 900-268 indicator lights will flash; take no
action until the LED to the far left turns blue; this
can take up to one minute.
7. Take your tablet or smart phone, go to the WiFi
settings and select the Edu-Logger network
which matches the 900-268 Module ID found on
the back of the 900-268 device. (Edu-
LoggerXXXX for example).
8. Give your device about 20 seconds to connect to
the 900-268.
9. Once the device is connected, go to your browser
and type the website wifi201.com into the URL
bar, then wait for 30-60 seconds.
10. You will see a “Control mode” icon in the
browser, click on this icon.
11. The browser will then load a new screen and
begin to auto detect the sensor(s); this can take a
minute. (You can stop the search when the sensor
is found.)
12. If the browser does not auto detect the sensor(s),
select “Search for sensors”.
13. Once the sensor is found, you will see an icon on
the left side of the screen for the light sensor. The
icon will display data in real time.
14. Click on the “Module setup” button located on
the light sensor icon in the module window to
change the light probe settings if need be.