Products for USB Sensing and Control
Products for USB Sensing and Control

PHIDGETS Inc.

Unit 1 - 6115 4 St SE
Calgary AB  T2H 2H9
Canada
+1 403 282-7335

Light Phidget

ID: LUX1000_0
Recommended for new designs: This product (or a similar replacement with a compatible form, fit and function) is estimated to be available for ten years or more.

This light sensor measures from 188 μlux to 220 klux and connects to any VINT port.

$12.00

Quantity Available: 1000+

Qty Price
5 $11.40
10 $10.80
25 $9.60
50 $8.40
100 $7.80
250 $7.20
500 $6.60
1000 $6.00

The LUX1000 measures brightness (illuminance). This Phidget is useful when creating automated systems that need to switch on/off at night or in low-light conditions. This Phidget connects to your computer through a VINT Hub.

Features:

  • Measurement ranges from 188 microlux (starlight on a moonless night) to 220,000 lux (direct sunlight).
  • Retrieve data as often as every 125 milliseconds.

VINT Hubs

This Phidget is a smart device that must be controlled by a VINT Hub. For more information about VINT, have a look at the VINT Primer. You can use a Phidget Cable to simply and easily connect the two devices. Here's a list of all of the different VINT Hubs currently available:

Product Board
Image Part Number Price Number of VINT Ports Controlled By
HUB0000_0 $30.00 6 USB (Mini-USB)
HUB5000_0 $60.00 6 Local Network (Ethernet or Wi-Fi)
SBC3003_0 $120.00 6

Phidget Cables

Use a Phidget cable to connect this device to the hub. You can solder multiple cables together in order to make even longer Phidget cables, but you should be aware of the effects of having long wires in your system.

Product Physical Properties
Image Part Number Price Cable Length
3002_0 $2.00 600 mm
3003_0 $1.50 100 mm
3004_0 $3.00 3.5 m
3034_0 $1.50 150 mm
3038_0 $2.25 1.2 m
3039_0 $2.75 1.8 m
CBL4104_0 $1.75 300 mm
CBL4105_0 $2.00 900 mm
CBL4106_0 $2.50 1.5 m


Part 1: Setup

Welcome to the LUX1000 user guide! In order to get started, make sure you have the following hardware on hand:


Next, you will need to connect the pieces:

LUX1000 Functional.jpeg
  1. Connect the LUX1000 to the VINT Hub using the Phidget cable.
  2. Connect the VINT Hub to your computer with a USB cable.


Now that you have everything together, let's start using the LUX1000!

Phidget Control Panel

In order to demonstrate the functionality of the LUX1000, the Phidget Control Panel running on a Windows machine will be used.


The Phidget Control Panel is available for use on both macOS and Windows machines.

Windows

To open the Phidget Control Panel on Windows, find the Ph.jpg icon in the taskbar. If it is not there, open up the start menu and search for Phidget Control Panel

Windows PhidgetTaskbar.PNG

macOS

To open the Phidget Control Panel on macOS, open Finder and navigate to the Phidget Control Panel in the Applications list. Double click on the Ph.jpg icon to bring up the Phidget Control Panel.


For more information, take a look at the getting started guide for your operating system:


Linux users can follow the getting started with Linux guide and continue reading here for more information about the LUX1000.

First Look

After plugging the LUX1000 into your computer and opening the Phidget Control Panel, you will see something like this:

LUX1000 Panel.jpg


The Phidget Control Panel will list all connected Phidgets and associated objects, as well as the following information:

  • Serial number: allows you to differentiate between similar Phidgets.
  • Channel: allows you to differentiate between similar objects on a Phidget.
  • Version number: corresponds to the firmware version your Phidget is running. If your Phidget is listed in red, your firmware is out of date. Update the firmware by double-clicking the entry.


The Phidget Control Panel can also be used to test your device. Double-clicking on an object will open an example.


Part 2: Using Your Phidget

About

The LUX1000 measures brightness (illuminance) from 188 microlux (starlight on a moonless night) to 220,000 lux (direct sunlight).

LUX1000-about.jpg

Explore Your Phidget Channels Using the Control Panel

You can use your Control Panel to explore your Phidget's channels.

1. Open your Control Panel, and you will find the Light Phidget channel:

LUX1000 Panel.jpg

2. Double click on the channel to open an example program. This channel belongs to the Light Sensor channel class:

Light Sensor: Measures the illuminance in the area the LUX1000 is facing

In your Control Panel, double click on "Light Phidget":

LUX1000-LightSensor.jpg

Part 3: Create your Program

1. Setting up your Programming Environment

2. Phidget Programming Basics

Part 4: Advanced Topics and Troubleshooting

How do I know what channel, serial number, or hub port to use in my program?

Before you open a Phidget channel in your program, you can set these properties to specify which channel to open. You can find this information through the Control Panel.

1. Open the Control Panel and double-click on the red map pin icon:

The locate Phidget button is found in the device information box

2. The Addressing Information window will open. Here you will find all the information you need to address your Phidget in your program.

All the information you need to address your Phidget


See the Phidget22 API for your language to determine exact syntax for each property.

Setting the Change Trigger and Data Interval

The Change Trigger is the minimum change in the sensor data needed to trigger a new data event. The Data Interval is the time (in ms) between data events sent out from your Phidget. You can modify one or both of these values to achieve different data outputs. You can learn more about these two properties here.

Dynamic Gain and Sampling
The response of the photodiodes depending on the wavelength of the incoming light.

The LUX1000 can measure the intensity of light in the range of 188µlx to 220klx. The device achieves this wide range due to its ability to dynamically change the gain value on its measurements, in addition to changing the amount of integration time taken per measurement. Changing the gain coarsely affects the range, while changing the integration time finely affects the range.

Because of these dynamic ranges, you may see momentary saturation when trying to measure large changes in light intensity in short periods of time (for example, a strobe light). Once the light level stabilizes, the sensor will settle back into optimal range settings.

Spectral Response

The light sensor on the LUX1000 is designed to sense light in a way that emulates the response of the human eye. However, digital light sensors work very differently than our eyes do. Using the photoelectric effect, the photodiodes in the sensor will generate current when struck by incoming photons. The problem is that the range of wavelengths that these photodiodes respond to vary depending on what materials they are made of, and none of them have the same response as the human eye.

The solution, offered by the chip used in the LUX1000, is to take readings from two different photodiodes. One photodiode detects only IR light (light invisible to the human eye), and one photodiode detects both visible and IR light. The device weights the measurements with coefficients based on calibration testing. Then takes the difference between the IR component from the combined IR and visible light. The result is a workable approximation of brightness, as seen by a human eye.


Product Specifications

Sensor Properties
Controlled By VINT
Sensor Type Light
Light Sensor
Light Level Min 188 μlx
Light Level Max (5V) 220 klx
Light Resolution 188 μlx
Sampling Interval Min 125 ms/sample
Sampling Interval Max 60 s/sample
Electrical Properties
Current Consumption Max * 500 μA
Current Consumption Min 20 μA
Physical Properties
Operating Temperature Min -15 °C
Operating Temperature Max 70 °C

* - Current consumption varies depending on selected data interval. See the graph below for details.

Current

Documents

Product History

Date Board Revision Device Version Comment
June 20170100Product Release

Software Objects

Channel NameAPIChannel
Light Sensor LightSensor 0

API


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Code Samples



Example Options


Downloads

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Code Samples

Language:

APIDetailLanguageOS
LightSensor Visual Studio GUI C# Windows Download
LightSensor Java Android Download
LightSensor JavaScript Browser Download
LightSensor Objective-C macOS Download
LightSensor Swift macOS Download
LightSensor Swift iOS Download
LightSensor Visual Basic .NET Windows Download
LightSensor Max/MSP Multiple Download

Have a look at our light sensors:

Product Sensor Properties Light Sensor
Image Part Number Price Sensor Type Controlled By Light Level Min Light Level Max (5V)
1142_0 $7.00 Light Voltage Input (0-5V) 1 lx 1 klx
1143_0 $7.00 Light Voltage Input (0-5V) 3 lx 70 klx
LUX1000_0 $12.00 Light VINT 188 μlx 220 klx