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

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## 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
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

## Getting Started

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:

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!

## 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 icon in the taskbar. If it is not there, open up the start menu and search for Phidget Control Panel

#### 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 icon to bring up the Phidget Control Panel.

### First Look

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

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.

### Light Sensor

Double-click on the Light Sensor object, labelled Light Phidget, in order to run the example:

General information about the selected object will be displayed at the top of the window. You can also experiment with the following functionality:

• Modify the change trigger and/or data interval value by dragging the sliders. For more information on these settings, see the data interval/change trigger page.

Before you can access the device in your own code, and from our examples, you'll need to take note of the addressing parameters for your Phidget. These will indicate how the Phidget is physically connected to your application. For simplicity, these parameters can be found by clicking the button at the top of the Control Panel example for that Phidget.

In the Addressing Information window, the section above the line displays information you will need to connect to your Phidget from any application. In particular, note the Channel Class field as this will be the API you will need to use with your Phidget, and the type of example you should use to get started with it. The section below the line provides information about the network the Phidget is connected on if it is attached remotely. Keep track of these parameters moving forward, as you will need them once you start running our examples or your own code.

You are now ready to start writing your own code for the device. The best way to do that is to start from our examples:

This Phidget is compatible with the LightSensor Examples.

Once you have your example, you will need to follow the instructions on the page for your programming language to get it running. To find these instructions, select your programming language from the Programming Languages page.

## Technical Details

### Current Consumption

Current consumption on the LUX1000 is dependent on the sampling interval you choose. More current is used for frequent samples.

### Dynamic Gain and Sampling

The LUX1000 is able to measure the intensity of light in the impressive range of 188µlx to 220klx. It's able to work in such a wide range is 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
The response of the photodiodes depending on the wavelength of the incoming light.

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 though, the sensor should be able to 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're 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 that detects only IR light (which is invisible to the human eye) and one that detects both visible and IR light. Once it has these measurements, it weights them with coefficients based on calibration testing, and then subtracts the IR component from the diode that detects both IR and visible light. The result is a workable approximation of brightness as seen by a human eye.

## What to do Next

• Programming Languages - Find your preferred programming language here and learn how to write your own code with Phidgets!
• Phidget Programming Basics - Once you have set up Phidgets to work with your programming environment, we recommend you read our page on to learn the fundamentals of programming with Phidgets.

#### 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 technical section of the User Guide for details.

#### Software Objects

Channel NameAPIChannel
Light Sensor LightSensor 0

#### API

 C C# / VB.NET Java JavaScript Max/MSP Python Swift Phidget API Manager API Networking API Connection API Logging API Dictionary API

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#### Code Samples

Language:

APIDetailLanguageOS
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