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Set up the software

 SPARKvue

Connecting the sensor to a tablet or computer:

1. Turn on the Wireless Light and Color Sensor. Check to

make sure the Bluetooth Status LED is blinking red.

2. Open SPARKvue, then click Sensor Data.

3. From the list of available wireless devices on the left, select

the device which matches the device ID printed on your
Wireless Light and Color Sensor.

Collecting data:

1. Select the measurements you intend to record from the

Select Measurements for Templates menu by clicking the
check box next to the relevant measurements' names.

2. Click Graph in the Templates section to open the

Experiment Screen. The graph’s axes will auto-populate
with the selected measurements.

3. Click Start 

 to begin recording data.

 PASCO Capstone

Connecting the sensor to a computer:

1. Turn on the Wireless Light and Color Sensor. Check to

make sure the Bluetooth Status LED is blinking red.

2. Open Capstone, then click Hardware Setup 

 in the

Tools palette.

3. From the list of Available Wireless Devices, click the

device which matches the device ID printed on your
Wireless Light and Color Sensor.

Collecting data:

1. Double-click or drag the Graph 

 icon in the Displays

palette to create a new blank graph display.

2. To assign measurements to the graph’s axes, click each

<Select Measurement> box and select an appropriate
measurement from the list.

3. Click Record 

 to begin collecting data.

Measurements

The Spot sensor and the Ambient sensor both measure relative
light levels in red, green, blue, and white. Note that the software
does not report any of these values from the Ambient Light
Aperture, which is used solely for calculating UV Index,
Illuminance, Irradiance, and PAR.

Spot Light Sensor:

Measurement

Range of Values

White (count)

0 to 65,535

Red* (%)

0 to 100

Green* (%)

0 to 100

Blue* (%)

0 to 100

*As a percentage of the total light detected by the Spot Light
Sensor

Ambient Light Sensor:

Measurement

Range of Values

UV Index

0 to 12 (typical in daylight)

Illuminance* (lux)

0 to 131,000

Solar Irradiance* (W/m

2

)

0 to 1,362

Solar PAR* (µmol/m

2

/s)

0 to 2,400

*Based on solar radiance

Definitions of measurements

UV Index: The ultraviolet index, or UV index, measures the
potential for skin damage by exposure to sunlight at a given
location. A low number means less risk than a higher number.

Illuminance: This refers to the total luminous flux incident on a
surface per unit area. It is used as a measure of how much the
incident light illuminates the surface. Illuminance is measured in
lux, or lumens per square meter.

Irradiance: In radiometry, irradiance is the radiant flux (power)
received by a surface per unit area. The SI unit of irradiance is
the watt per square meter (W/m

2

).

PAR (Photosynthetically Active Radiation): This designates
the spectral range, or wave band, of solar radiation from 400 to
700 nm that photosynthetic organisms are able to use in the
process of photosynthesis. This spectral region corresponds
closely with the range of light visible to the human eye.

Light sensor response curves

The sensor’s relative responsivity for a given wavelength refers
to a ratio of the current produced in the sensor in response to
light of this wavelength from an LED of a specific color to the
current produced in response to the same wavelength from a
clear LED. The graph in Figure 1 shows normalized Relative
Responsivity versus Wavelength (in nm) for red, green, blue, and
clear LEDs.

Figure 1. Response curves for red, green, blue, and unfiltered light.

Wireless Light and Color Sensor | PS-3248

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