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

Touch Wheel Phidget

ID: HIN1001_0

Use this capacitive touch wheel and buttons as an intuitive user interface to your Phidgets system.

$15.00

Quantity Available: 51

Qty Price
5 $14.25
10 $13.50
25 $12.00
50 $10.50
100 $9.75
250 $9.00
500 $8.25
1000 $7.50

Need a user-friendly control panel for your Phidgets project? Look no further than the Touch Wheel Phidget. This user interface board uses capacitive touch technology, similar to the touchscreen on a smartphone. Capacitive touch sensors such as this can detect a touch through a piece of glass or plastic of up to 3mm thick, so you can hide this board inside an enclosure or behind a panel.



Features

This board has four touch buttons and one fully-functional scroll wheel pad. Whenever a button or the scroll wheel is initially touched, an event is fired in software, allowing you to react immediately to the change. The scroll wheel also generates an event whenever your finger's position changes as you slide it across the wheel. You can also adjust the sensitivity of the board to avoid missed touches or unintentional touches.

Product Specifications

Sensor Properties
Controlled By VINT
Detecting Distance Max 5 mm
Sampling Interval Min 20 ms/sample
Sampling Interval Max 250 ms/sample
Electrical Properties
Current Consumption Min 20 μA
Current Consumption Max 2 mA
Physical Properties
Operating Temperature Min -40 °C
Operating Temperature Max 85 °C
Sensitivity Settings
Sensitivity (0-1) Application
0.8 - 1.0 Behind up to 3mm of glass
0.2 Inside default enclosure

Software Objects

Channel NameAPIChannel
Capacitive Touch Sensor CapacitiveTouch 0 - 3
Capacitive Scroll Wheel CapacitiveTouch 4

API


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Documents

Library & Driver Downloads

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 20170103Product Release

Getting Started

Next, you will need to connect the pieces:

HIN1001 Functional.jpeg
  1. Connect the VINT Hub to your computer with a USB cable.
  2. Connect the HIN1001 to the VINT Hub using the Phidget cable.


Using the HIN1001

Phidget Control Panel

In order to demonstrate the functionality of the HIN1001, 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 HIN1001.

First Look

After plugging the HIN1001 into your computer and opening the Phidget Control Panel, you will see something like this:

HIN1001 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

HIN1001 CapacitiveTouch Example.jpg

When you double click on a Capacitive Touch object, a window like the one pictured will open.

  • At the top of the window, information about your device and the properties of this particular channel will be listed.
  • On the left, change trigger and/or data interval can be changed. For more information on these settings, see the Data Rate/Change Trigger page. In addition, the sensor's sensitivity can be adjusted. The higher the sensitivity, the more susceptible the sensor will be to sensing touch.
  • On the right, the Touch? check box will be checked if an object is touching or nearly touching the surface associated with this capacitive touch object. For capacitive touch objects that have a linear or circular touch region, the Last Value corresponds to the location on the region that the current or most recent touch occurred.


Technical Details

Interaction with Data Interval

Unlike most other Phidgets, setting a data interval on the HIN1001 affects its initial response time, rather than an overall data rate. After the first touch has been detected, the device will stream data as fast as possible (up to every 16ms, as data becomes available). This means that if setting a data interval of 250ms, the first touch may need to be held up to 250ms to wake the device, after which subsequent touches on all channels will be detected much faster, until no touch is detected for a few seconds. Once the device has been left alone for a few seconds, it will resume its low-power state and wait for the next touch.

Re-Calibration

Since capacitive touch sensors rely on checking capacitance against a threshold to detect when they are touched, they need to keep a good baseline of the capacitance of their environment. The HIN1001 will re-calibrate its baseline levels if it detects a constant touch for more than 50 seconds, in order to prevent getting stuck in a touched state. Similarly, it will re-calibrate its baseline capacitance to adjust to falling capacitance (such as when it is moved away from a surface) in order to prevent getting stuck in a not-touched state. The latter adjustment happens as soon as the baseline is detected to have fallen.

Relative Change in Position

CapacitiveTouch CircularPositionChange.jpg

Since the touch wheel is circular, calculating the change in position of a finger over the wheel can be more involved than simply subtracting one position from another. In cases where the value crosses the zero point, a simple subtraction would indicate a large movement in the opposite direction. For example a movement from 0.9 to 0.1 would appear as a movement of -0.8, when a movement of +0.2 is much more likely. As such, a change is position should be calculated taking this into account. Here is an example of how to do the calculation in C:

static void CCONV
onTouchHandler(PhidgetCapacitiveTouchHandle ch, void *ctx, double touchValue) {			

   double change = (touchValue - oldPos);  
   static double oldPos;

   if (change > 0.5)
      change -= 1;
   else if (change < -0.5)
      change += 1;

   oldPos = touchValue;

   ...
}

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.

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
HUB0000_0 $30.00 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

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
HIN1000_0 $12.00 VINT 5 mm
HIN1001_0 $15.00 VINT 5 mm