Phidgets - Voltage Input

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Phidgets - Voltage Input

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Navigation:  Widget Designer > Devices > Phidgets >

Phidgets - Voltage Input

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Example: Light Sensor 1000 lux - P/N 1142_0 (Image licensed by Phidgets under CC BY-NC-ND 3.0)

Example: Light Sensor 1000 lux - P/N 1142_0
(Image licensed by Phidgets under CC BY-NC-ND 3.0)

A Phidgets Voltage Input connects to an Analog Input (e.g. of an InterfaceKit) or VINT Hub port

The depicted Light Sensor for example can be connected to both.

 

Please make sure that the device is a real "Voltage Input" and not a "Voltage Ratio Input" device.

 

Note that all Phidget devices are only available in the licensed Widget Designer edition, not the Free version.

Adding a New Phidgets Voltage Input

To add a Phidgets Voltage Input device, open the Devices menu and select Phidgets Device > Voltage Input Device. This opens the Configuration dialog. Alternatively, you can add a new device in the Configuration dialog with the "+" button.

On the right side, you can name, dis-/enable the device or configure it as explained in the next paragraph.

The name is the unique identifier for this Phidgets Voltage Input object in WD and the general rules for naming objects apply here as well (only letters, numbers and underscore are allowed, the first symbol must be a letter).
If you like, you can change the default name to a more descriptive one. When scripting, enter the name to access available members as described further down.

The "Enable" check box is ticked per default. On the left side, you should see that the icon in front of your Phidgets Voltage Input is a filled blue circle. An empty blue circle indicates an enabled device which is not connected. A filled gray circle indicates a disabled device.

You can close the dialog at any time. The newly created device will also be added to the Devices menu > Phidgets Device > Voltage Input Device and can be opened from here or with Devices menu > Configuration.

The Phidgets Voltage Input Settings

click to enlargeSelect the Serial number of the connected device from the drop-down. If your device is connected to a Hub or InterfaceKit, use their serial number respectively.
If the correct serial does not show in the drop-down, make sure that the device (or Hub or InterfaceKit) is shown in the Phidget Control Panel.
To access devices connected via the Network Server feature, you need to add the respective Phidgets Server device first.

Fill out Hub Port, Channel and Is Hub Port Device according to the Phidget Addressing Information dialog and select the product number from the Sensor Type drop-down.
Select an update Interval time and a Trigger value (for sensitivity) according to your needs.
 
Press Apply to confirm your settings.

After the connection is established, the Current Value field will update as soon as a change is registered and also display the correct value units.

Using the Device in Regular Scripting

After adding a Phidgets Voltage Input, you can also use it via scripting which allows to perform actions on the device as well as retrieve information from it.

To send commands to the device, first create a CustomScript button or use the Macro editor or anything else with a scripting field. If you enter the device's identifier name into the script field (per default that is e.g. "Phidgets_VoltageInput1"), Script Assist will offer you a list of all available members.

You can for example set the sensor type to an Indoor Light Sensor:
Phidgets_VoltageInput1.SetSensorType("PN_1142")

You can also retrieve specific values via scripting in the same way as from other widgets:
vint = Phidgets_VoltageInput1.GetValue

The scripting structure for Phidgets provides two different approaches for setting and retrieving values.
If you are already familiar with the object-based notation and using properties, all device properties can be used like any other object property you have already encountered:
Phidgets_VoltageInput1.Interval = 100
Label5.Text = "Current Update Interval: " + Phidgets_VoltageInput1.Interval

If you prefer a command structure that distinctly implies the action to be performed, you can use the "Set..." and "Get..." members:
Phidgets_VoltageInput1.SetInterval(100)
Label5.Text = "Current Update Interval: " + Phidgets_VoltageInput1.GetInterval

Both approaches can be used interchangeably.

Please keep in mind that some properties are read-only properties, e.g. "Unit", and do not provide a "Set..." member.
Furthermore, the higher-level properties of the device itself, like the Serial number or the Enabled state, need to be scripted as properties and do not provide the "Set..." and "Get..." members.

For a list with all available members and commands with examples and descriptions, please refer to the chapter Phidgets Voltage Input Members.

Using the Device with Event Listeners

Event Listeners can be added to the Configuration dialog and provide a simple way of listening to triggers from connected devices.

Please see the chapter Event Listener for a detailed description of its functionality and the Phidgets Voltage Input Events chapter for a list (with examples and description) of the possible events raised by this device type.