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

2.5A Stepper Phidget

ID: STC1001_0

This compact Stepper Phidget gives you control of one bipolar stepper motor from a port on your VINT hub.


Note: The STC1001 has been replaced by the STC1003, which has the same function and form factor, but will has a maximum motor current of 4 amps.

If you're looking for a compact solution for controlling a medium-sized stepper motor, the STC1001 is an affordable and convenient option. You can control the position, velocity, and acceleration of the motor by sending commands from your program. This Phidget connects to a VINT Hub; for a list of options see the Connection & Compatibility tab.

Safety Features

The STC1001 comes equipped with a heatsink to prevent the board from overheating during use. The power terminals on this device are polarity protected: if you happen to hook up the power supply backwards, the device simply won't power up and won't be damaged. A 5-amp automotive-style fuse is also included to protect the board from current spikes from the motor's back-EMF. This Phidget is isolated from input to output, so your VINT hub and computer will be protected if anything goes wrong.

Power Saving Options

For power-conscious users, we also allow for separate control over the current limit and the holding current limit. If you know your motor will be stationary for long periods of time, but still needs a small amount of holding torque to maintain its position, you can set the holding current appropriately without interfering with the running current limit.

Power Guards

Using motor controllers with large motors can pose a risk for your power supply. If your supply does not have protective features built-in, you can use a Power Guard Phidget to prevent damage from power spikes from back EMF that is generated when motors brake or change direction. We recommend that you use the SAF2000 for any motor with a coil current between 1.5 and 5 amperes, and the SAF1000 for motors above 5A.

Image Part Number Price
SAF1000_0 $60.00
SAF2000_0 $10.00

Bipolar Stepper Motors

The STC1001 can control both unipolar and bipolar motors, but in almost all cases you're better off with a bipolar motor due to their increased power and more precise step angles. If you care about torque, large motors with high gear ratios are your best bet. If you car about speed, motors with no gearbox and high step angles are better. If you want precision, steppers without gearboxes and low step angles are best because while gearboxes do result in smaller steps, they also introduce a flat 1-3 degrees of positional error due to backlash in the gears.

Product Motor Properties Electrical Properties Physical Properties Gearbox Properties
Image Part Number Price Step Angle Rated Torque Maximum Motor Speed Recommended Voltage Shaft Diameter Weight Gear Ratio
3320_0 $16.00 1.8° 520 g·cm 1300 RPM 24 V DC 5 mm 111.4 g
3321_0 $36.00 0.067° 14 kg·cm 50 RPM 24 V DC 6 mm 217.5 g 26 103121 : 1
3322_0 $38.00 0.018° 32 kg·cm 13 RPM 24 V DC 6 mm 243.6 g 99 10442057 : 1
3323_0 $16.00 1.8° 1.2 kg·cm 1000 RPM 24 V DC 5 mm 200 g
3324_0 $16.00 1.8° 3.3 kg·cm 1000 RPM 24 V DC 5 mm 289 g
3325_0 $40.00 0.35° 18 kg·cm 200 RPM 24 V DC 8 mm 457 g 5 211 : 1
3326_0 $42.00 0.13° 30 kg·cm 70 RPM 24 V DC 8 mm 502 g 13 212289 : 1
3327_0 $44.00 0.067° 30 kg·cm 40 RPM 24 V DC 8 mm 503 g 26 103121 : 1
3328_0 $46.00 0.035° 48 kg·cm 20 RPM 24 V DC 8 mm 564 g 50 43974913 : 1
3329_0 $48.00 0.018° 48 kg·cm 10 RPM 24 V DC 8 mm 564 g 99 10442057 : 1
3330_0 $28.00 0.9° 11.2 kg·cm 500 RPM 24 V DC 14 695 g
3332_0 $70.00 0.42° 46.6 kg·cm 165 RPM 24 V DC 12 mm 1.2 kg 4 14 : 1
3333_0 $72.00 0.12° 150 kg·cm 50 RPM 24 V DC 12 mm 1.3 kg 15 310 : 1
3334_0 $74.00 0.023° 240 kg·cm 10 RPM 24 V DC 12 mm 1.5 kg 76 4964 : 1
3335_0 $60.00 1.8° 30 kg·cm 200 RPM 30 V DC 12 mm 1.8 kg
3340_0 $20.00 0.9° 3.3 kg·cm 400 RPM 24 V DC 5 mm 288 g


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

Power Supplies

This Phidget requires a power supply between 8 and 30V DC. We recommend that you use a 12V DC power supply for small steppers and a 24V DC supply for larger ones. If you're not sure, check the data sheet for your motor for the recommended power supply voltage (not to be confused with the coil voltage, which is usually much lower). For best results, we recommend getting a 5 amp supply. 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 Current Output Voltage Wall Plug Style
3022_0 $10.00 2 A 12 V Australian
3023_1 $10.00 2 A 12 V European
3024_1 $10.00 2 A 12 V North American
3025_0 $10.00 2 A 12 V British
3084_0 $1.50 500 mA 12 V European
3085_0 $1.50 500 mA 12 V North American
3086_0 $10.00 1 A 24 V North American
PSU4013_0 $20.00 2.5 A 24 V
PSU4014_0 $40.00 5 A 24 V
PSU4015_0 $20.00 1 A 24 V
PSU4016_0 $40.00 15 A 24 V
PSU4017_0 $75.00 15 A 24 V
PSU4018_0 $20.00 5 A 12 V

Power Supply Pigtail

You can use a pigtail wire if you want to avoid removing the barrel jack connector from your supply's cord:

Product Physical Properties
Image Part Number Price Connector A Connector B Cable Length Cable Gauge
3031_0 $2.75 Power Jack 5.5 x 2.1mm (Female) 2 Loose Wires 250 mm 20 AWG

Getting Started

Welcome to the STC1001 user guide! In order to get started, make sure you have the following hardware on hand:

Next, you will need to connect the pieces:

STC1001 Functional.jpeg
  1. Connect the STC1001 to the VINT Hub using the Phidget cable.
  2. Connect the stepper motor to the Phidget's output terminals. See your motor's data sheet or product page for wiring instructions.
  3. Connect the VINT Hub to your computer with a USB cable.
  4. Connect the power supply to the power terminals on the STC1001.

Now that you have everything together, let's start using the STC1001!

Using the STC1001

Phidget Control Panel

In order to demonstrate the functionality of the STC1001, 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 STC1001.

First Look

After plugging the STC1001 into your computer and opening the Phidget Control Panel, you will see something like this:

STC1001 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.

Stepper Motor

Double-click on the Stepper object, labelled Stepper Phidget, in order to run the example:

STC1001 Stepper 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:

  • Toggle the Engage button to provide power to the motor coils.
  • By default, motor position, velocity, and acceleration are measured in sixteenths of a step. If you want to use different units, change the value in the Rescale Factor textbox.
  • Use the Target Position slider to set a new target position. Change the Acceleration and Velocity sliders to speed up or slow down the STC1001's approach.
  • Select the Velocity (Continuous) Control tab for continuous rotation instead of specifiying a position.

Finding The Addressing Information

Before you can access the device in your own code, and from our examples, you'll need to take note of the addressing parameters for your Phidget. These will indicate how the Phidget is physically connected to your application. For simplicity, these parameters can be found by clicking the button at the top of the Control Panel example for that Phidget.

The locate Phidget button is found in the device information box

In the Addressing Information window, the section above the line displays information you will need to connect to your Phidget from any application. In particular, note the Channel Class field as this will be the API you will need to use with your Phidget, and the type of example you should use to get started with it. The section below the line provides information about the network the Phidget is connected on if it is attached remotely. Keep track of these parameters moving forward, as you will need them once you start running our examples or your own code.

All the information you need to address your Phidget

Using Your Own Program

You are now ready to start writing your own code for the device. The best way to do that is to start from our Code Samples.

Select your programming language of choice from the drop-down list to get an example for your device. You can use the options provided to further customize the example to best suit your needs.

Code Sample Choose Language.png

Once you have your example, you will need to follow the instructions on the page for your programming language to get it running. To find these instructions, select your programming language from the Programming Languages page.

Technical Details

Rescale Factor

Further Reading

For more information, have a look at the Stepper Motor and Controller Primer.

What to do Next

  • Programming Languages - Find your preferred programming language here and learn how to write your own code with Phidgets!
  • Phidget Programming Basics - Once you have set up Phidgets to work with your programming environment, we recommend you read our page on to learn the fundamentals of programming with Phidgets.

Product Specifications

Board Properties
Controlled By VINT
Controller Properties
Motor Type Bipolar Stepper
Number of Motor Ports 1
Motor Position Resolution 1/16 Step (40-Bit Signed)
Position Max ± 1E+15 1/16 steps
Stepper Velocity Resolution 1 1/16 steps/sec
Stepper Velocity Max 115000 1/16 steps/sec
Stepper Acceleration Resolution 1 1/16 steps/sec²
Stepper Acceleration Min 2 1/16 steps/sec²
Stepper Acceleration Max 1E+07 1/16 steps/sec²
Sampling Interval Min 100 ms/sample
Sampling Interval Max 60 s/sample
Electrical Properties
Available Current per Coil Max 2.5 A
Supply Voltage Min 8 V DC
Supply Voltage Max 30 V DC
Current Consumption Min (VINT Port) 500 μA
Current Consumption Max (VINT Port) 1 mA
Quiescent Power Consumption Max * 200 mW
Physical Properties
Recommended Wire Size 16 - 26 AWG
Operating Temperature Min -20 °C
Operating Temperature Max 85 °C
Customs Information
Canadian HS Export Code 8471.80.00
American HTS Import Code 8471.80.40.00
Country of Origin CN (China)

* This is the power consumption for the board only. Add the motor's rated power consumption for total maximum power consumption.

Software Objects

Channel NameAPIChannel
Bipolar Stepper Controller Stepper 0


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Print this API


Code Samples


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

Product History

Date Board Revision Device Version Comment
February 2018 0 100 Product Release
April 2019 0 101 Fixed bug that caused STC1001 to become unresponsive
May 2019 0 110 Added failsafe timer functionality
Sept 2019 0 111
  • Fixed issue where stepper could stop functioning while still attached
  • Velocity changes that cause the motor to stop now cause deceleration instead of abrupt stop
  • Changing acceleration while the motor is moving now works properly as long as velocity is between -1000 and +1000 steps/sec. Changing acceleration outside of this velocity range can cause unpredictable acceleration behaviour because the device cannot recalculate the accerlation curve fast enough
  • Fixed issues that occured when switching between Run mode and Step mode and vice-versa while the motor is running
October 2019 0 112 Fixed msfollower bug
August 2020 0 113 Fixed crash that made STC1001 unresponsive until power cycle

Have a look at our stepper controllers:

Product Controller Properties Board Properties
Image Part Number Price Number of Motor Ports Motor Type Controlled By
1062_1B $50.00 4 Unipolar Stepper USB (Mini-USB)
1067_0B $90.00 1 Bipolar Stepper USB (Mini-USB)
STC1002_0 $80.00 1 Bipolar Stepper VINT
STC1003_0 $40.00 1 Bipolar Stepper VINT