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

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## Beam Break Phidget

ID: PRX2300_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 sensor can detect objects that break a beam of IR light by passing through the slot.

## $10.00 Quantity Available: 852 Qty Price 5$9.50
10 $9.00 25$8.00
50 $7.00 100$6.50
250 $6.00 500$5.50
1000 $5.00 For applications that involve detecting or counting small objects passing through a narrow space, this Phidget is the perfect fit. When there is no object blocking the beam, the signal will drop low. When an object breaks the beam, the signal will jump up. You can adjust the sensitivity using the trim potentiometer depending on the type of object you're trying to sense or count. For more details, see the User Guide tab. The PRX2300 connects directly to a VINT port using the VoltageInput or DigitalInput channel class. Have a look at the Connection & Compatibility tab for a list of compatible VINT Hubs, and check the User Guide tab for recommendations on which channel class to use for your application. #### VINT Hubs This device can 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 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

### Select Device

Your Phidget must be connected to a device with a VINT port using a 3-wire Phidget cable.

## Step 1: Install Phidgets Library

Before you begin using your Phidgets, you will need to install the Phidget Library.

If you're unsure which one you should get, press ⊞ WIN + Pause/Break:

3a. Select Next

## Step 1: Install Phidgets Library

3b. Read the Licence Agreement. Select Next.

## Step 1: Install Phidgets Library

3c. Choose Installation Location. Select Next.

## Step 1: Install Phidgets Library

3d. Confirm Install

## Step 1: Install Phidgets Library

3e. Wait for Installation to complete. This should only take a few moments.

## Step 1: Install Phidgets Library

3f. Installation Complete. Close installation Window.

## Step 2: Connect Devices

● Connect USB Cable to your Windows Computer

● Connect VINT Device(s)

## Step 3: Verify Connection

1. Open the Phidgets Control Panel:

## Step 3: Verify Connection

2. If connected, your Phidgets will appear in the Phidget Control Panel.

## Done!

If you're able to see and interact with your devices in the Phidget Control Panel, you're done with the Setup part of this guide.

Scroll down to Part 2: Using Your Phidget for the next step.

For more help installing in Windows (e.g. manual install, using a VM, etc.), visit this page:

## Step 1: Install Phidgets Library

Before you begin using your Phidgets, you will need to install the Phidget Library.

## Step 1: Install Phidgets Library

3a. Select Continue

## Step 1: Install Phidgets Library

3c. Here, you have the option to select the installation location. Select Install to continue.

## Step 1: Install Phidgets Library

3e. Wait for Installation to complete. This should only take a few moments.

## Step 1: Install Phidgets Library

3f. You may see a message that the extension has been blocked. Select Open Security Preferences.

## Step 1: Install Phidgets Library

3g. Beside the message for Phidgets Inc, Click Allow.

## Step 1: Install Phidgets Library

3h. Installation Complete, Click Close.

## Step 1: Install Phidgets Library

3i. To delete the installer, click Move to Trash.

## Step 2: Connect Devices

● Connect USB Cable to your Mac

● Connect VINT Device(s)

## Step 3: Verify Connection

1. Open the Phidgets Control Panel:

## Step 3: Verify Connection

2. If connected, your Phidgets will appear in the Phidget Control Panel.

## Done!

If you're able to see and interact with your devices in the Phidget Control Panel, you're done with the Setup part of this guide.

Scroll down to Part 2: Using Your Phidget for the next step.

## Step 1: Install Phidgets Library

1. First, you need to install the libusb-1.0 development libraries. For example, in Debian based distributions:

apt-get install libusb-1.0-0-dev

You’ll also need a C compiler and builder, if you don’t already have one installed.

apt-get install gcc
apt-get install make

## Step 1: Install Phidgets Library

3. Use the following commands in the location you unpacked to install the library:

./configure
make
sudo make install

## Step 1: Install Phidgets Library

4. (Optional) You can also download and unpack the following optional packages:

phidget22networkserver - Phidget Network Server, which enables the use of Phidgets over your network

phidget22admin - Admin tool to track who is connected to your Phidgets when using the network server

libphidget22extra - Required for phidget22networkserver and phidget22admin

libphidget22java - The Java libraries for Phidget22

For installation instructions for these packages, see the README file included with each one.

## Step 2: Connect Devices

● Connect USB Cable to your Linux Computer

● Connect VINT Device(s)

## Step 3: Verify Connection

1. The easiest way to verify that your libraries are working properly is to compile and run an example program. Download and unpack this C example that will detect any Phidget:

## Step 3: Verify Connection

2. Next, open the terminal in the location where you unpacked the example. Compile and run using:

gcc HelloWorld.c -o HelloWorld -lphidget22
sudo ./HelloWorld

ou should receive a “Hello” line for each Phidget channel that is discovered:

I don’t see any Phidgets show up in the HelloWorld example

You need to run it with sudo in order to be able to access USB devices. In order to use Phidgets without sudo, you need to set your udev rules. See the Advanced Information page on the final slide of this guide for details.

## Done!

If you're able to see your devices in the Hello World example, you're done with the Setup part of this guide.

Scroll down to Part 2: Using Your Phidget for the next step.

## Step 1: Install Phidgets Library

Before you begin using your Phidgets, you will need to install the Phidget Library.

If you're unsure which one you should get, press ⊞ WIN + Pause/Break:

3a. Select Next

## Step 1: Install Phidgets Library

3b. Read the Licence Agreement. Select Next.

## Step 1: Install Phidgets Library

3c. Choose Installation Location. Select Next.

## Step 1: Install Phidgets Library

3d. Select Next to confirm install.

## Step 1: Install Phidgets Library

3e. Wait for Installation to complete. This should only take a few moments.

## Step 1: Install Phidgets Library

3f. Installation Complete. Close installation Window.

## Step 2: Connect Devices

● Connect Power Jack

● Connect VINT Device(s)

● Connect Ethernet to a Router or Switch (optional)

## Step 3: Verify Connection

Choose a setup method:

## Step 3: Connect Wireless

1. When you connect the power supply to the HUB5000, the red LED should turn on.

## Step 3: Connect Wireless

2. On your mobile device, go to the Wi-Fi settings and connect to the HUB5000:

## Step 3: Connect Wireless

4. Once your device is connected to the HUB5000’s WiFi signal:

Click on the WiFi network and find an option that says “Manage router” or “Visit homepage”.

Go to your internet browser and type 192.168.100.1 in the address bar.

## Step 3: Connect Wireless

5. Create a password for your HUB5000. You'll use it to access the Configure Page from now on.

## Step 3: Connect Wireless

6. Navigate to the network page. Change the Mode to Client.

## Step 3: Connect Wireless

7. Enter your Wifi Network details and click Save & Apply. It may take a few minutes for your Phidgets to appear in the Phidget Control Panel, which we’ll check in the next step.

## Step 4: Verify Connection

1. Open the Phidgets Control Panel:

## Step 4: Verify Connection

2. If connected, your Phidgets will appear in the Phidget Control Panel.

## Done!

If you're able to see and interact with your devices in the Phidget Control Panel, you're done with the Setup part of this guide.

Scroll down to Part 2: Using Your Phidget for the next step.

For more help installing in Windows (e.g. manual install, using a VM, etc.), visit this page:

## Step 3: Connect Wireless

1. When you connect the power supply to the HUB5000, the red LED should turn on.

## Step 3: Connect Wireless

3. Create a password for your HUB5000. You'll use this password to access the Configure Page from now on.

## Step 3: Connect Wireless

4. Navigate to the network page. Change the Mode to Client.

## Step 3: Connect Wireless

5. Enter your Wifi Network details to use your Hub wirelessly and click Save & Apply. You can then disconnect the ethernet cable.

It may take a few minutes for your Phidgets to appear in the Phidget Control Panel, which we’ll check in the next step.

## Step 4: Verify Connection

1. Open the Phidgets Control Panel:

## Step 4: Verify Connection

2. If connected, your Phidgets will appear in the Phidget Control Panel.

## Done!

If you're able to see and interact with your devices in the Phidget Control Panel, you're done with the Setup part of this guide.

Scroll down to Part 2: Using Your Phidget for the next step.

For more help installing in Windows (e.g. manual install, using a VM, etc.), visit this page:

## Step 1: Install Phidgets Library

Before you begin using your Phidgets, you will need to install the Phidget Library.

## Step 1: Install Phidgets Library

3a. Select Continue

## Step 1: Install Phidgets Library

3c. Here, you have the option to select the installation location. Select Install.

## Step 1: Install Phidgets Library

3e. Wait for Installation to complete. This should only take a few moments.

## Step 1: Install Phidgets Library

3f. You may see a message that the extension has been blocked. Select Open Security Preferences.

## Step 1: Install Phidgets Library

3g. Beside the message for Phidgets Inc, Click Allow.

## Step 1: Install Phidgets Library

3h. Installation Complete, Click Close.

## Step 1: Install Phidgets Library

3i. To delete the installer, click Move to Trash.

## Step 2: Connect Devices

● Connect Power Jack

● Connect VINT Device(s)

● Connect Ethernet to a Router or Switch (optional)

## Step 3: Verify Connection

Choose a setup method:

## Step 3: Connect Wireless

1. When you connect the power supply to the HUB5000, the red LED should turn on.

## Step 3: Connect Wireless

2. On your mobile device, go to the Wi-Fi settings and connect to the HUB5000:

## Step 3: Connect Wireless

4. Once your device is connected to the HUB5000’s WiFi signal:

Click on the WiFi network and find an option that says “Manage router” or “Visit homepage”.

Go to your internet browser and type 192.168.100.1 in the address bar.

## Step 3: Connect Wireless

5. Create a password for your HUB5000. You'll use this password to access the Configure Page from now on.

## Step 3: Connect Wireless

6. Navigate to the network page. Change the Mode to Client.

## Step 3: Connect Wireless

7. Enter your Wifi Network details and click Save & Apply. It may take a few minutes for your Phidgets to appear in the Phidget Control Panel, which we’ll check in the next step.

## Step 4: Verify Connection

1. Open the Phidget Control Panel:

## Step 4: Verify Connection

2. If connected, your Phidgets will appear in the Phidget Control Panel.

## Done!

If you're able to see and interact with your devices in the Phidget Control Panel, you're done with the Setup part of this guide.

Scroll down to Part 2: Using Your Phidget for the next step.

## Step 3: Connect Wireless

1. When you connect the power supply to the HUB5000, the red LED should turn on.

## Step 3: Connect Wireless

3. Create a password for your HUB5000. You'll use this password to access the Configure Page from now on.

## Step 3: Connect Wireless

4. Navigate to the network page. Change the Mode to Client.

## Step 3: Connect Wireless

5. Enter your Wifi Network details to use your Hub wirelessly and click Save & Apply. You can then disconnect the ethernet cable.

It may take a few minutes for your Phidgets to appear in the Phidget Control Panel, which we’ll check in the next step.

## Step 4: Verify Connection

1. Open the Phidget Control Panel:

## Step 4: Verify Connection

2. If connected, your Phidgets will appear in the Phidget Control Panel.

## Done!

If you're able to see and interact with your devices in the Phidget Control Panel, you're done with the Setup part of this guide.

Scroll down to Part 2: Using Your Phidget for the next step.

## Step 1: Install Phidgets Library

1. First, you need to install the libusb-1.0 development libraries. For example, in Debian based distributions:

apt-get install libusb-1.0-0-dev

You’ll also need a C compiler and builder, if you don’t already have one installed.

apt-get install gcc
apt-get install make

## Step 1: Install Phidgets Library

3. Use the following commands in the location you unpacked to install the library:

./configure
make
sudo make install

## Step 1: Install Phidgets Library

4. (Optional) You can also download and unpack the following optional packages:

phidget22networkserver - Phidget Network Server, which enables the use of Phidgets over your network

phidget22admin - Admin tool to track who is connected to your Phidgets when using the network server

libphidget22extra - Required for phidget22networkserver and phidget22admin

libphidget22java - The Java libraries for Phidget22

For installation instructions for these packages, see the README file included with each one.

## Step 2: Connect Devices

● Connect Power Jack

● Connect VINT Device(s)

● Connect Ethernet to a Router or Switch (optional)

## Step 3: Verify Connection

Choose a setup method:

## Step 3: Connect Wireless

1. When you connect the power supply to the HUB5000, the red LED should turn on.

## Step 3: Connect Wireless

2. On your mobile device, go to the Wi-Fi settings and connect to the HUB5000:

## Step 3: Connect Wireless

4. Once your device is connected to the HUB5000’s WiFi signal:

Click on the WiFi network and find an option that says “Manage router” or “Visit homepage”.

Go to your internet browser and type 192.168.100.1 in the address bar.

## Step 3: Connect Wireless

5. Create a password for your HUB5000. You'll use this password to access the Configure Page from now on.

## Step 3: Connect Wireless

6. Navigate to the network page. Change the Mode to Client.

## Step 3: Connect Wireless

7. Enter your Wifi Network details and click Save & Apply. It may take a few minutes for your Phidgets to appear in the Phidget Control Panel, which we’ll check in the next step.

## Step 4: Verify Connection

1. The easiest way to verify that your libraries are working properly is to compile and run an example program. Download and unpack this C example that will detect any Phidget:

## Step 3: Verify Connection

2. Next, open the terminal in the location where you unpacked the example. Compile and run using:

gcc HelloWorld.c -o HelloWorld -lphidget22
sudo ./HelloWorld

ou should receive a “Hello” line for each Phidget channel that is discovered:

I don’t see any Phidgets show up in the HelloWorld example

You need to run it with sudo in order to be able to access USB devices. In order to use Phidgets without sudo, you need to set your udev rules. See the Advanced Information page on the final slide of this guide for details.

## Done!

If you're able to see your devices in the Hello World example, you're done with the Setup part of this guide.

Scroll down to Part 2: Using Your Phidget for the next step.

## Step 3: Connect Wireless

1. When you connect the power supply to the HUB5000, the red LED should turn on.

## Step 3: Connect Wireless

3. Create a password for your HUB5000. You'll use this password to access the Configure Page from now on.

## Step 3: Connect Wireless

4. Navigate to the network page. Change the Mode to Client.

## Step 3: Connect Wireless

5. Enter your Wifi Network details to use your Hub wirelessly and click Save & Apply. You can then disconnect the ethernet cable.

It may take a few minutes for your Phidgets to appear in the Phidget Control Panel, which we’ll check in the next step.

## Step 4: Verify Connection

1. The easiest way to verify that your libraries are working properly is to compile and run an example program. Download and unpack this C example that will detect any Phidget:

## Step 3: Verify Connection

2. Next, open the terminal in the location where you unpacked the example. Compile and run using:

gcc HelloWorld.c -o HelloWorld -lphidget22
sudo ./HelloWorld

ou should receive a “Hello” line for each Phidget channel that is discovered:

I don’t see any Phidgets show up in the HelloWorld example

You need to run it with sudo in order to be able to access USB devices. In order to use Phidgets without sudo, you need to set your udev rules. See the Advanced Information page on the final slide of this guide for details.

## Done!

If you're able to see your devices in the Hello World example, you're done with the Setup part of this guide.

Scroll down to Part 2: Using Your Phidget for the next step.

## Step 1: Install Phidgets Library

Before you begin using your Phidgets, you will need to install the Phidget Library.

If you're unsure which one you should get, press ⊞ WIN + Pause/Break:

3a. Select Next.

## Step 1: Install Phidgets Library

3b. Read the Licence Agreement. Select Next.

## Step 1: Install Phidgets Library

3c. Choose Installation Location. Select Next.

3d. Select Next.

## Step 1: Install Phidgets Library

3e. Wait for Installation to complete. This should only take a few moments.

## Step 1: Install Phidgets Library

3f. Installation Complete. Close installation Window.

## Step 2: Connect Devices

● Connect Power Jack

● Connect VINT Device(s)

● Connect Ethernet to a Router or Switch in the same network as your Windows PC

## Step 3: Verify Connection

1. Open the Phidgets Control Panel:

## Step 3: Verify Connection

2. If connected, your Phidgets will appear in the Phidget Control Panel.

Now that the SBC's ethernet connection is verified, it can be connected to wifi.

If you don't have a USB wifi adapter or you're planning to stay on ethernet, you can scroll down to

## Step 4: Connect Wireless

2. Create a password for your SBC. You'll use this to access the configuration page from now on.

## Step 4: Connect Wireless

3. Navigate to Network -> Wireless. Select your Network, enter the wifi password and select Add This Network.

## Step 4: Connect Wireless

4. Scroll down to your saved networks, click on your network and select Join This Network.

## Step 4: Connect Wireless

5. It should now say connected in the status column.

You can now unplug the ethernet cable.

## Done!

If you're able to see and interact with your devices in the Phidget Control Panel, you're done with the Setup part of this guide.

Scroll down to Part 2: Using Your Phidget for the next step.

For more help installing in Windows (e.g. manual install, using a VM, etc.), visit this page:

## Step 1: Install Phidgets Library

Before you begin using your Phidgets, you will need to install the Phidget Library.

## Step 1: Install Phidgets Library

3a. Select Continue

## Step 1: Install Phidgets Library

3c. Here, you have the option to select the installation location. Select Install.

## Step 1: Install Phidgets Library

3e. Wait for Installation to complete. This should only take a few moments.

## Step 1: Install Phidgets Library

3f. You may see a message that the extension has been blocked. Select Open Security Preferences.

3g. Click Allow.

## Step 1: Install Phidgets Library

3h. Installation Complete, Click Close.

## Step 1: Install Phidgets Library

3i. To delete the installer, click Move to Trash.

## Step 2: Connect Devices

● Connect Power Jack

● Connect VINT Device(s)

● Connect Ethernet to a Router or Switch in the same network as your Mac

## Step 3: Verify Connection

1. Open the Phidget Control Panel:

## Step 3: Verify Connection

2. If connected, your Phidgets will appear in the Phidget Control Panel.

Now that the SBC's ethernet connection is verified, it can be connected to wifi.

If you don't have a USB wifi adapter or you're planning to stay on ethernet, you can scroll down to

## Step 4: Connect Wireless

2. Create a password for your SBC. You will use this to access the configuration page from now on.

## Step 4: Connect Wireless

3. Navigate to Network -> Wireless. Select your Network, enter the wifi password and select Add This Network.

## Step 4: Connect Wireless

4. Scroll down to your saved networks, click on your network and select Join This Network.

## Step 4: Connect Wireless

5. It should now say connected in the status column.

You can now unplug the ethernet cable.

## Done!

If you're able to see and interact with your devices in the Phidget Control Panel, you're done with the Setup part of this guide.

Scroll down to Part 2: Using Your Phidget for the next step.

## Step 1: Install Phidgets Library

1. First, you need to install the libusb-1.0 development libraries. For example, in Debian based distributions:

apt-get install libusb-1.0-0-dev

You’ll also need a C compiler and builder, if you don’t already have one installed.

apt-get install gcc
apt-get install make

## Step 1: Install Phidgets Library

3. Use the following commands in the location you unpacked to install the library:

./configure
make
sudo make install

## Step 1: Install Phidgets Library

4. (Optional) You can also download and unpack the following optional packages:

phidget22networkserver - Phidget Network Server, which enables the use of Phidgets over your network

phidget22admin - Admin tool to track who is connected to your Phidgets when using the network server

libphidget22extra - Required for phidget22networkserver and phidget22admin

libphidget22java - The Java libraries for Phidget22

For installation instructions for these packages, see the README file included with each one.

## Step 2: Connect Devices

● Connect Power Jack

● Connect VINT Device(s)

● Connect Ethernet to a Router or Switch in the same network as your Linux machine

## Step 3: Verify Connection

1. The easiest way to verify that your libraries are working properly is to compile and run an example program. Download and unpack this C example that will detect any Phidget:

## Step 3: Verify Connection

2. Next, open the terminal in the location where you unpacked the example. Compile and run using:

gcc HelloWorld.c -o HelloWorld -lphidget22
sudo ./HelloWorld

If everything is working, you should receive a “Hello” line for each Phidget channel that is discovered:

I don’t see any Phidgets show up in the HelloWorld example

You need to run it with sudo in order to be able to access USB devices. In order to use Phidgets without sudo, you need to set your udev rules. See the Advanced Information page on the final slide of this guide for details.

Now that the SBC's ethernet connection is verified, it can be connected to wifi.

If you don't have a USB wifi adapter or you're planning to stay on ethernet, you can scroll down to

## Step 4: Connect Wireless

If you're using a terminal-only Linux machine, use the browser on your phone instead.

(If you use a phone, you need to enter the IP address your router assigned to the SBC instead of phidgetsbc.local)

## Step 4: Connect Wireless

2. Create a password for your SBC. You will use this to access the configuration page from now on.

## Step 4: Connect Wireless

3. Navigate to Network -> Wireless. Select your Network, enter the wifi password and select Add This Network.

## Step 4: Connect Wireless

4. Scroll down to your saved networks, click on your network and select Join This Network.

## Step 4: Connect Wireless

5. It should now say connected in the status column.

You can now unplug the ethernet cable.

## Step 4: Connect Wireless

6. Run the HelloWorld example again to confirm that your Phidgets are accessible over wifi.

## Done!

If you're able to see your devices in the Hello World example, you're done with the Setup part of this guide.

Scroll down to Part 2: Using Your Phidget for the next step.

## Part 2: Using Your Phidget

The PRX2300 shines a beam of infrared light between its prongs, and can detect when the beam is broken by a small object. This sensor's signal can be read using the Digital Input channel class when it is connected to a VINT hub.

### Explore Your Phidget Channels Using The Control Panel

Double click on the Digital Input channel class under the port your PRX2300 is connected to.

## 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:

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

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

VoltageInput or DigitalInput?

You can use the PRX2300 by plugging it into a VINT Hub port and opening that port in VoltageInput or DigitalInput mode. For applications that involve opaque objects large enough to block the whole beam at once, we recommend using DigitalInput mode. For small or translucent objects, using VoltageInput may be necessary since a partial beam break may not result in a voltage high enough to register a state change (e.g. 1.8V in the case of the HUB0000).

Calibrating the PRX2300

The PRX2300 has a small trim potentiometer on board to adjust the voltage offset.

If you're using this Phidget in DigitalInput mode (are detecting large opaque objects that will strongly break the beam), rotate the potentiometer counter-clockwise toward the (+). No further calibration is needed.

If you're using this Phidget in VoltageInput mode, we recommend adjusting the voltage offset until it sits at around 1.25V when the beam is not blocked. Next, you should write a short program that will log all of the voltage data to a text file or spreadsheet (and set the data interval to the minimum value in order to catch all of the data), so you can determine which voltage spikes indicate and object and which voltage spikes are just noise.

For example, suppose you tested the sensor and observed 4 objects pass through, resulting in the following data:

If we assume the first two peaks are actually one object that just happened to allow some of the beam to pass, and the fifth peak is a false positive, then we can assume the peaks indicated by the four yellow arrows are the data that correspond with the four objects. In order for our program to correctly identify these, we need to set a high trigger (indicated by the green line) well above the fifth peak, but below the sixth peak. Similarly, in order to prevent the first two peaks from counting as two separate events, we must set the low trigger below the dip in between them, but above the dip between the next two peaks.

Once you've done enough testing to determine where your high and low triggers should be set, you just need to add a bit of logic to your voltage change event. If the voltage is higher than your high trigger, you can set a global variable that indicates that an object has been sensed, and you should not reset that variable until the voltage has dropped back down below the low trigger. Here's and example of what the event handler might look like in Python if our high trigger is 3.75V and our low trigger is 2.7V:

eventTriggered = 0

def onVoltageChange(self, voltage):
if voltage > 3.75 and eventTriggered == 0
eventTriggered = 1
print("Object detected!")

if voltage < 2.7 and eventTriggered == 1
eventTriggered = 0

The digital input is stuck on "False" even when the beam is unbroken

Try adjusting the sensitivity trim pot on the PRX2300. If it's turned all the way clockwise, you will get this behavior. If it's still stuck on "False" after adjusting the sensitivity, try cleaning the emitter and receiver on the inside of the prongs to clear away any debris that could be blocking the infrared beam.

#### Product Specifications

Sensor Properties
Controlled By VoltageInput or Digital Input
Sensor Type Proximity (Infrared)
Detecting Distance Max 15 mm
Electrical Properties
Current Consumption Min 17 mA
Current Consumption Max 21 mA
Customs Information
American HTS Import Code 8473.30.51.00
Country of Origin CN (China)

#### Product History

Date Board Revision Device Version Comment
July 20200N/AProduct Release

This device doesn't have an API of its own. It is controlled by opening a DigitalInput or VoltageInput channel on the Phidget that it's connected to. For a list of compatible Phidgets, see the Connection & Compatibility tab.

You can find details for the DigitalInput and VoltageInput API on the API tab for the Phidget that this sensor connects to. For more information on which of these two channel classes you should use, see the User Guide tab.

#### Have a look at our proximity sensors:

Product Sensor Properties
Image Part Number Price Controlled By Sensor Type Detecting Distance Max
1103_1B $9.00 VoltageRatio Input Distance (Infrared) 100 mm 3523_0$35.00 Digital Input (5V) Proximity (Capacitive) 8 mm
3524_0 $50.00 Digital Input (5V) Proximity (Capacitive) 15 mm 3525_0$50.00 Digital Input (5V) Through-Beam (Photoelectric) 10 m
3527_0 $35.00 Digital Input (5V) Proximity (Inductive) 15 mm 3528_0$10.00 Digital Input (5V) Proximity (Inductive) 5 mm
3560_0 $2.50 Digital Input (5V) Proximity (Magnetic) 19 mm 3562_0$2.50 Digital Input (5V) Proximity (Magnetic) 12 mm
PRX2300_0 \$10.00 VoltageInput or Digital Input Proximity (Infrared) 15 mm