Products for USB Sensing and Control
Products for USB Sensing and Control


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(±1V) Voltage Input Phidget

ID: VCP1002_0
Recommended for new designs: This product (or a similar replacement with a compatible form, fit and function) is estimated to be available for ten years or more.

Measure tiny voltage differences of up to ±1V with precision. This Phidget is isolated and plugs into a VINT port.


Quantity Available: 893

Qty Price
5 $23.75
10 $22.50
25 $20.00
50 $17.50
100 $16.25
250 $15.00
500 $13.75
1000 $12.50

The VCP1002 can be used to measure small voltage values up to ±1V. This Phidget connects to your computer through a VINT Hub.


  • Select voltage range (±1V down to ±10mV) in software - Smaller range results in higher precision
  • Automatic mode - Continuously adjust the voltage range to improve measurement accuracy
  • Use with Current Sense Resistors to measure current in a circuit

Technical Details:

  • Isolation - Protect your VINT Hub or computer from power surges and improve system stability by eliminating potential ground loops


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 Controlled By
HUB0000_0 $30.00 6 USB (Mini-USB)
HUB5000_0 $60.00 6 Local Network (Ethernet or Wi-Fi)
SBC3003_0 $120.00 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
CBL4104_0 $1.75 300 mm
CBL4105_0 $2.00 900 mm
CBL4106_0 $2.50 1.5 m

Step 1: Setup

Welcome to the VCP1002 user guide! In order to get started, make sure you have the following hardware on hand:

Next, you will need to connect the pieces:

VCP1002 Functional.jpeg
  1. Connect the VCP1002 to the VINT Hub using the Phidget cable.
  2. Connect the voltage source to the terminals of the Voltage Input Phidget (ground to the minus terminal, supply to the plus terminal).
  3. Connect the VINT Hub to your computer with a USB cable.

Now that you have everything together, let's start using the VCP1002!

Phidget Control Panel

In order to demonstrate the functionality of the VCP1002, 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 Ph.jpg icon in the taskbar. If it is not there, open up the start menu and search for Phidget Control Panel

Windows PhidgetTaskbar.PNG


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 Ph.jpg 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 VCP1002.

First Look

After plugging the VCP1002 into your computer and opening the Phidget Control Panel, you will see something like this:

VCP1002 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.

Part 2: Using Your Phidget


The VCP1002 allows you to measure voltages up to ±1V. This Phidget is ideal for small voltage monitoring applications. You can manually select the voltage range (±1V down to ±10mV) in your program to maximize resolution, or use Automatic mode which constantly adjusts the range based on the last voltage measurement.

Explore Your Phidget Channels Using The Control Panel

You can use your Control Panel to explore your Phidget's channels.

1. Open your Control Panel, and you will find the 10-bit (+-1V) Voltage Input Phidget channel:

VCP1002 Panel.jpg

2. Double click on the channel to open an example program. This channel belongs to the Voltage Input channel class:

Voltage Input: Measures the voltage across the VCP1002’s terminals

In your Control Panel, double click on "10-bit (+-1V) Voltage Input Phidget":


Part 3: Create your Program

1. Setting up your Programming Environment

2. Phidget Programming Basics

Part 4: Advanced Topics and Troubleshooting

How do I know what channel, serial number, or hub port to use in my program?

Before you open a Phidget channel in your program, you can set these properties to specify which channel to open. You can find this information through the Control Panel.

1. Open the Control Panel and double-click on the red map pin icon:

The locate Phidget button is found in the device information box

2. The Addressing Information window will open. Here you will find all the information you need to address your Phidget in your program.

All the information you need to address your Phidget

See the Phidget22 API for your language to determine exact syntax for each property.

Setting the Change Trigger and Data Interval

The Change Trigger is the minimum change in the sensor data needed to trigger a new data event. The Data Interval is the time (in ms) between data events sent out from your Phidget. You can modify one or both of these values to achieve different data outputs. You can learn more about these two properties here.


The VCP1002 is electrically isolated. A power surge in the circuit being measured would only affect the VCP1002, so your VINT Hub or computer will remain unharmed. Having isolation also helps prevent the formation of ground loops in your system.

With isolation on the VCP1002, you can measure the voltage differential between two points of a circuit regardless of their relation to ground. The voltage differential between those points must be within the specification of the sensor.

For example, in the pictured battery charging circuit, there is sufficient complexity between the current sense resistor (Rsense) and VINT Hub that directly measuring the voltage with a non-isolated sensor could be a risky proposition. However, with VCP1002, the voltage across the resistor may be measured directly, ignoring the circuits in between.

Measuring the voltage across "Rsense" in this circuit is made easy through isolation!
Current Sense Resistors

The VCP1002 is made to measure small voltages anywhere in a circuit. As a result, the VCP1002 is ideal for use with current sense resistors to measure current. For an in-depth look at how to use current sense resistors with the VCP1002, see our article about Current Sense Resistors.

Product Specifications

Sensor Properties
Sensor Type Voltage (DC)
Board Properties
Controlled By VINT
Voltage Sensor
Voltage Difference Max ± 1 V DC
Withstand Voltage Max ± 50 V DC
Sampling Interval Max 60 s/sample
Sampling Interval Min 40 ms/sample
Sensor Input Impedance 1 MΩ
Measurement Error Max 0.1 %
Number of Voltage Inputs 1
Voltage Resolution 1 mV DC
±10 mV Range
Voltage Resolution 300 nV DC
Voltage Offset Max 25 μV DC
Measurement Error Max 0.5 %
Voltage Noise 6 μV DC
±40 mV Range
Voltage Resolution 1.2 μV DC
Voltage Offset Max 40 μV DC
Measurement Error Max 0.25 %
Voltage Noise 25 μV DC
±200 mV Range
Voltage Resolution 6 μV DC
Voltage Offset Max 200 μV DC
Measurement Error Max 0.25 %
Voltage Noise 100 μV DC
±1 V Range
Voltage Resolution 28.8 μV DC
Voltage Offset Max 1 mV DC
Measurement Error Max 0.3 %
Voltage Noise 500 μV DC
Electrical Properties
Current Consumption Max 12 mA
Physical Properties
Recommended Wire Size 16 - 26 AWG
Operating Temperature Min -40 °C
Operating Temperature Max 85 °C
Customs Information
Canadian HS Export Code 9030.33.00
American HTS Import Code 9030.33.38.00
Country of Origin CN (China)


Product History

Date Board Revision Device Version Comment
June 20170106Product Release

Software Objects

Channel NameAPIChannel
Voltage Input VoltageInput 0


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Code Samples

Example Options


				Make your selections to display sample code.

Code Samples


VoltageInput Visual Studio GUI C# Windows Download
VoltageInput Java Android Download
VoltageInput Multi-Channel Example JavaScript Browser Download
VoltageInput JavaScript Browser Download
VoltageInput Objective-C macOS Download
VoltageInput Swift macOS Download
VoltageInput Swift iOS Download
VoltageInput Visual Basic .NET Windows Download
VoltageInput Max/MSP Multiple Download

Have a look at our DC voltage sensors:

Product Voltage Sensor Sensor Properties
Image Part Number Price Voltage Difference Max Input Voltage Min (DC) Input Voltage Max (DC)
1135_0B $17.00 ± 30 V DC
3508_0 $115.00
3509_1 $115.00 0 V DC 200 V DC
DAQ1400_0 $20.00
VCP1000_0 $50.00 ± 40 V DC
VCP1001_0 $25.00 ± 40 V DC
VCP1002_0 $25.00 ± 1 V DC