If you need a straightforward solution for a control knob on your project, the Dial Phidget is just what you need. It uses an optical encoder, so it has fully continuous rotation with none of the dead zones or physical wear that potentiometer-based dials have. The HIN1101 connects to a port on a VINT Hub. See the Comaptible Products tab for a list of hubs.
When the dial is pressed down, a DigitalInput object will change from false to true, so your program can use the change event to trigger a function or feature of your project.
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:
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.
Next, you will need to connect the pieces:
Now that you have everything together, let's start using the HIN1101!
In order to demonstrate the functionality of the HIN1101, 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.
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
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.
For more information, 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 HIN1101.
After plugging the HIN1101 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:
The Phidget Control Panel can also be used to test your device. Double-clicking on an object will open an example.
When you double click on an Encoder object, a window like the one pictured will open.
Double-click on a Digital Input object 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:
|Current Consumption (Unconfigured)||18 μA|
|Current Consumption Max||2.5 mA|
|Encoder Resolution||96 PPR|
|Timing Resolution||0.00013 s|
|Operating Temperature Min||-40 °C|
|Operating Temperature Max||85 °C|
|Encoder||Visual Basic .NET||Windows||Download|
|DigitalInput||Visual Basic .NET||Windows||Download|
|Date||Board Revision||Device Version||Comment|
|September 2017||0||101||Product Release|
Some of these dials have a limited range of rotation, but are otherwise potential alternatives to the HIN1101.