Products for USB Sensing and Control

Products for USB Sensing and Control

IR Reflective Sensor 10cm

ID: 1103_0
This IR proximity sensor can detect opaque objects within 10cm and connects to a Voltage Input.

Replaced by 1103_1

Replaced by the 1103 - IR Reflective Sensor 10cm.

This sensor can detect the presence of a highly reflective object at 10cm, for less reflective objects (like hands) the distance is about 5cm. The 1103 works just as well in both dim and well lit environments.

Comes packaged with

Product History

Date Board Revision Device Version Comment
March 20060N/AProduct Release
April 20101N/ANew Sensor Chip mounted vertically on board (sensor faces up)

Getting Started

Welcome to the 1103 user guide! In order to get started, make sure you have the following hardware on hand:

Next, you will need to connect the pieces:

1103 1 Connecting The Hardware.jpg
  1. Connect the 1103 to the 1018 with the Phidget cable.
  2. Connect the 1018 to your computer with the USB cable.

Now that you have everything together, let's start using the 1103!

Using the 1103

Phidget Control Panel

In order to demonstrate the functionality of the 1103, we will connect it to the 1018, and then run an example using the Phidget Control Panel on a Windows machine.

The Phidget Control Panel is available for use on both macOS and Windows machines. If you would like to follow along, first 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 1103.

First Look

After plugging in the 1103 into the 1018, and the 1018 into your computer, open the Phidget Control Panel. You will see something like this:

1018 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 If your Phidget is listed in red, your firmware is out of date.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.

Voltage Ratio Input

Double-click on a Voltage Ratio Input object in order to run the example:

1018 Sensors VoltageRatioInput.png

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.
  • Select the 1103 from the Sensor Type drop-down menu. The example will now convert the voltage into a 1 (object detected) or 0 (no object detected) automatically. Converting the voltage to a 1 (object detected) or 0 (no object detected) is not specific to this example, it is handled by the Phidget libraries, with functions you have access to when you begin developing!

Technical Details


The 1103 can detect the presence of an object at 10cm. It does not rely on the reflective properties of the surface of the object. It cannot detect the presence of the object if it is emitting large amounts of light, such as a light bulb.

The 1103 will not detect objects that are more than 10cm away, but will detect objects that are closer than 10cm. When an object is in the line of sight, at a distance of 10cm or closer, the 1103 voltage will decrease from 5V to 0V. Once the object leaves the line of sight, the value is restored to 5V.

The 1103 works just as well in both dim and well lit areas. You may have trouble using this sensor through a pane of glass, since the IR light can easily reflect off of the surface of the glass.

Phidget Cable


The Phidget Cable is a 3-pin, 0.100 inch pitch locking connector. Pictured here is a plug with the connections labelled. The connectors are commonly available - refer to the Analog Input Primer for manufacturer part numbers.

What to do Next

  • Software Overview - Find your preferred programming language here to learn how to write your own code with Phidgets!
  • General Phidget Programming - Read this general guide to the various aspects of programming with Phidgets. Learn how to log data into a spreadsheet, use Phidgets over the network, and much more.
  • Phidget22 API - The API is a universal library of all functions and definitions for programming with Phidgets. Just select your language and device and it'll give you a complete list of all properties, methods, events, and enumerations that are at your disposal.