Products for USB Sensing and Control

Products for USB Sensing and Control


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Programmable Power Guard Phidget

ID: SAF1000_0

Protect your circuit and power supply by detecting and preventing overvoltage and overtemperature situations.


Quantity Available: 494

Qty Price
5 $90.25
10 $85.50
25 $76.00
50 $66.50
100 $61.75
250 $57.00
500 $52.25
1000 $47.50

When high-power motor stalls or stops suddenly, it can generate a high-voltage surge that can damage the circuitry of the motor controller and burn out the power supply. This Power Guard Phidget is designed to protect your hardware from such an event by preventing current from flowing back into the power supply, and by providing a heatsink and fan for the excess power to dissipate. This board is designed for high current systems and is capable of protecting your equipment from even the largest of power spikes. Simply connect your power supply's positive wire to the 8-30V input lug, connect your device's positive wire to the output lug, and wire both grounds to the ground lug. The SAF1000 connects to a port on a VINT Hub. See the "Comaptible Products" tab for a list of hubs.

Power Control and Safety Features

Since this is an intelligent VINT device, the over voltage trigger can be modified in software to accomodate for different power supplies. Similarly, the fan can be switched on or off, or it can be set to turn on when a certain temperature threshold is passed. You can also choose to switch the power off through software, like a relay. Even if communication between this board and the computer is interrupted, it will continue to power the device and protect against the last chosen overvoltage trigger.

Isolated for Stability

The VINT port on this board is electrically isolated from the rest of the board in order to improve stability by eliminating ground loops.

We strongly recommend using this Phidget according to the table below:

Recommended Use

Controller Motor Rated Current Suggested Power Guard
STC1000 Less than 1.5A None
STC1000 1.5A to 5A SAF2000
STC1000 Greater than 5A SAF1000
DCC1000 Less than 1A None
DCC1000 1A to 5A SAF2000
DCC1000 Greater than 5A SAF1000

Product Specifications

Board Properties
Controlled By VINT
Power Supply Protector
Overvoltage Setting Selectable via software 8 - 33 VDC
Overtemperature Trigger 125 °C
Sampling Interval Min 100 ms/sample
Sampling Interval Max 60 s/sample
Fan Trigger 75 °C
Electrical Properties
Continuous Current 50 A
Current Consumption Min (VINT Port) 100 μA
Supply Voltage Min 8 V DC
Supply Voltage Max 30 V DC
Power Consumption 250 mW
Physical Properties
Recommended Wire Size 6 - 14 AWG
Operating Temperature Min -40 °C
Operating Temperature Max 85 °C

Software Objects

Channel NameAPIChannel
Power Supply Protector PowerGuard 0
Voltage Sensor VoltageInput 0
Temperature Sensor TemperatureSensor 0


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Library & Driver Downloads

Code Samples

PowerGuard C Multiple Download
PowerGuard C# Windows Download
PowerGuard JavaScript Any Download
PowerGuard Objective-C macOS Download
PowerGuard Python Multiple Download
PowerGuard Visual Basic .NET Windows Download
VoltageInput C Multiple Download
VoltageInput C# Windows Download
VoltageInput Java Multiple Download
VoltageInput JavaScript Any Download
VoltageInput Objective-C macOS Download
VoltageInput Python Multiple Download
VoltageInput Visual Basic .NET Windows Download
TemperatureSensor C Multiple Download
TemperatureSensor C# Windows Download
TemperatureSensor Java Multiple Download
TemperatureSensor JavaScript Any Download
TemperatureSensor Objective-C macOS Download
TemperatureSensor Python Multiple Download
TemperatureSensor Visual Basic .NET Windows Download

Product History

Date Board Revision Device Version Comment
August 20170101Product Release

Getting Started

Welcome to the SAF1000 user guide! In order to get started, make sure you have the following hardware on hand:

Next, you will need to connect the pieces:

SAF1000 Functional.jpeg
  1. Connect the SAF1000 to your VINT Hub using the Phidget cable.
  2. Connect the VINT Hub to your computer using the USB cable.
  3. Connect the positive power terminal of the device you're powering to the "OUT" terminal on the SAF1000.
  4. Connect the ground terminal of the device you're powering to the ground terminal on the SAF1000.
  5. Connect the positive and negative wires of your power supply to the "Vin" and "GND" terminals of the SAF1000, respectively.
  6. Plug in your power supply.

Using the SAF1000

Phidget Control Panel

In order to demonstrate the functionality of the SAF1000, 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 SAF1000.

First Look

After plugging the SAF1000 into your computer and opening the Phidget Control Panel, you will see something like this:

SAF1000 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.

Power Supply Protector

Double click on the Power Supply Protector object in order to run the example:

SAF1000 DigitalInput 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:

  • Adjust the voltage cutoff slider to determine at which voltage the SAF1000 will cut power to your system.
  • Select the fan mode- on, off, or auto (automatically turns on when board reaches 70°C, turns off after dropping below 55°C)
  • Click the enabled box once the cutoff and fan mode are set in order to activate the SAF1000.

Temperature Sensor

Double-click on the Temperature Sensor object , labelled Temperature Sensor, in order to run the example:

SAF1000 TemperatureSensorIC 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 measured temperature can be seen next to the Temperature label. Cover the board with your hands to see the temperature quickly rise.

Supply Voltage Input

SAF1000 VoltageInputSupply Example.jpg

When you double click on an Supply Voltage Input 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.
  • On the right, the supply voltage of the Phidget is displayed in real-time.

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.


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
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

Power Supplies

This Phidget protects a power supply between 8 and 30V DC. Check the product page or data sheet of the device being powered to determine how much current is needed and what voltage range is permissable. Select the power supply from the list below that matches your region's wall socket type.

Product Electrical Properties Physical Properties
Image Part Number Price Power Supply Voltage Min Power Supply Voltage Max Power Supply Current Wall Plug Style
3022_0 $10.00 11.4 V DC 12.6 V DC 2 A Australian
3023_1 $10.00 11.4 V DC 12.6 V DC 2 A European
3024_1 $10.00 11.4 V DC 12.6 V DC 2 A North American
3025_0 $10.00 11.4 V DC 12.6 V DC 2 A British
3080_0 $25.00 11.4 V DC 12.6 V DC 5 A Australian
3081_0 $25.00 11.4 V DC 12.6 V DC 5 A European
3082_0 $25.00 11.4 V DC 12.6 V DC 5 A North American
3083_0 $25.00 11.4 V DC 12.6 V DC 5 A British
3084_0 $6.75 11.4 V DC 12.6 V DC 500 mA European
3085_0 $6.75 11.4 V DC 12.6 V DC 500 mA North American
3086_0 $10.00 22.8 V DC 25.2 V DC 1 A North American