Products for USB Sensing and Control

Products for USB Sensing and Control

PhidgetLinearTouch - Discontinued

ID: 1015_0
This touch slider recognizes both contact and proximity. Connects directly to a USB port.

Discontinued

The PhidgetLinearTouch detects changes in the capacitance between the on-board electrodes and the object making contact. The side of the circuit board opposite the connector and components is the side intended for contact.


The 1015 can be mounted behind a sheet of glass or plastic; The recommended thickness is 1/8 inch. Use Silicon adhesive when attaching the Phidget to the material; standing the PhidgetLinearTouch off or creating space between the separation material and the Phidget can cause false-triggering to occur. Materials thicker than 1/8” may work, but will require a larger surface area of contact to ensure proper triggering (i.e.: two fingers instead of one).


Sliding a finger along the touch sensor varies the Analog Input 0 value from 0 to 1000 in approximately 125 discrete steps. When the finger is removed, the final measured value is retained. Two Digital Inputs are used to convey additional information: Digital Input 0 is True when contact is made with the Phidget, and Digital Input 1 is True when a finger or object comes in close proximity to the board. The Analog Input value is valid when both Digital Inputs are true.

The PhidgetLinearTouch connects directly to your computer via USB, and uses the CapacitiveTouch object in software.

FUNCTIONAL

Comes packaged with

Product Specifications

Sensor Properties
API Object Name HumanInput
Controlled By USB
Sensor Type Touch (Capacitive)
Detecting Distance Max 10 mm
Electrical Properties
Current Consumption Max 14 mA
USB Speed Low Speed
Physical Properties
Operating Temperature Min 0 °C
Operating Temperature Max 70 °C

Software Objects

Device Object Name Channel
Capacitive Touch Strip HumanInput 0

Software Objects

Channel NameAPIChannel
Capacitive Slider Sensor CapacitiveTouch 0

API


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Documents

Code Samples

APILanguageOS
CapacitiveTouch C Multiple Download
CapacitiveTouch C# Windows Download
CapacitiveTouch Java Multiple Download
CapacitiveTouch JavaScript Any Download
CapacitiveTouch Objective-C macOS Download
CapacitiveTouch Python Multiple Download
CapacitiveTouch Visual Basic .NET Windows Download

Product History

Date Board Revision Device Version Comment
August 2005 0100 (500)Product Release
October 20060101Encore II
March 2017 Product Discontinued.

Getting Started

Welcome to the 1015 user guide! In order to get started, make sure you have the following hardware on hand:


Next, you will need to connect the pieces:

1015 0 Connecting The Hardware.jpg
  1. Connect the Phidget to your computer using the USB cable


Now that you have everything together, let's start using the 1015!

Testing Using Windows

Phidget Control Panel

In order to demonstrate the functionality of the 1015, 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. 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 1015.

First Look

After plugging the 1015 into your computer and opening the Phidget Control Panel, you will see something like this:

1015 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.

Capacitive Touch

Double-click on the Capacitive Touch object labelled PhidgetLinear Touch in order to run the example:

1015 CapacitiveTouch Example.jpg


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.
  • The sensitivity of the 1015 can also be adjusted. The higher the sensitivity, the more susceptible the 1015 will be to sensing touch.
  • When the 1015 senses a touch, the state of the Touch? checkbox will change.
  • The Last Value label corresponds to the location of the last touch along the 1015.


Technical Details

The 1015 is actually a capacitive-charge sensor, detecting changes in the capacitance between the on-board electrodes and the object making contact. The side of the circuit board opposite the connector and components is the side intended for contact. The internal sensor used for charge-detection is a Quantum Research Group QT401 Sensor.

Device Inputs

The 1015 appears to the Phidget software libraries as a CapacitiveTouch object. Sliding a finger along the touch sensor varies the axis value from 0 to 1 in approximately 125 discrete steps. When the finger is removed, the final measured value is retained.

For many projects it is required that the highest and lowest available values be more readily accessible than the full range. The PhidgetLinearTouch board has been designed so that the end-zones of the touch area have a greater contact area, allowing for effective maximum/minimum value control. If it is desired to use the touch slider as an array of buttons, or a combination of an array of buttons and a smaller slide-touch area, one must only interpret specific sub-ranges of sensor values differently in software depending upon the intended use. If sub-ranges of values are to be used as buttons, it is recommended that a small range of sensor values be left between the subranges where a null-response is observed.

Dielectric Separation

The 1015 has been left without components on the contact side so that it may be mounted behind a sheet of glass or plastic. The recommended thickness of separation material is 1/8". Silicon adhesive is recommended when attaching the Phidget to the material; standing the PhidgetLinearTouch off or creating space between the separation material and the Phidget can cause false-triggering to occur. It should be noted that materials thicker than 1/8" may work, but will require a larger surface area of contact to ensure proper triggering (i.e. two fingers instead of one).


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.

Have a look at our capacitive touch sensors:

Product Sensor Properties
Image Part Number Price Controlled By Detecting Distance Max
1016_0 $40.00 USB 10 mm
1129_1 $11.00 VoltageRatio Input 12.7 mm