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If you're looking for a compact solution for controlling a medium-sized stepper motor, the STC1003 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.
The STC1003 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.
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.
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.
The STC1003 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||426 RPM||12 V DC||5 mm||111.4 g||—|
|3321_0||$36.00||0.067°||14 kg·cm||80 RPM||12 V DC||6 mm||217.5 g||26 103⁄121 : 1|
|3322_0||$38.00||0.018°||32 kg·cm||20 RPM||12 V DC||6 mm||243.6 g||99 1044⁄2057 : 1|
|3323_0||$16.00||1.8°||1.2 kg·cm||2150 RPM||12 V DC||5 mm||200 g||—|
|3324_0||$16.00||1.8°||3.3 kg·cm||2150 RPM||12 V DC||5 mm||289 g||—|
|3325_0||$40.00||0.35°||18 kg·cm||415 RPM||12 V DC||8 mm||457 g||5 2⁄11 : 1|
|3326_0||$42.00||0.13°||30 kg·cm||150 RPM||12 V DC||8 mm||502 g||13 212⁄289 : 1|
|3327_0||$44.00||0.067°||30 kg·cm||80 RPM||12 V DC||8 mm||503 g||26 103⁄121 : 1|
|3328_0||$46.00||0.035°||48 kg·cm||40 RPM||12 V DC||8 mm||564 g||50 4397⁄4913 : 1|
|3329_0||$48.00||0.018°||48 kg·cm||20 RPM||12 V DC||8 mm||564 g||99 1044⁄2057 : 1|
|3330_0||$28.00||0.9°||11.2 kg·cm||1075 RPM||12 V DC||1⁄4″||695 g||—|
|3332_0||$70.00||0.42°||46.6 kg·cm||375 RPM||12 V DC||12 mm||1.2 kg||4 1⁄4 : 1|
|3333_0||$72.00||0.12°||150 kg·cm||116 RPM||12 V DC||12 mm||1.3 kg||15 3⁄10 : 1|
|3334_0||$74.00||0.023°||240 kg·cm||25 RPM||12 V DC||12 mm||1.5 kg||76 49⁄64 : 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||1075 RPM||12 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:
|Image||Part Number||Price||Number of VINT Ports||Controlled By|
|HUB5000_0||$60.00||6||Local Network (Ethernet or Wi-Fi)|
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.
|Image||Part Number||Price||Cable Length|
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||—|
You can use a pigtail wire if you want to avoid removing the barrel jack connector from your supply's cord:
|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|
Welcome to the STC1003 user guide! In order to get started, make sure you have the following hardware on hand:
Next, you will need to connect the pieces:
Now that you have everything together, let's start using the STC1003!
In order to demonstrate the functionality of the STC1003, 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 STC1003.
After plugging the STC1003 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.
Double-click on the Stepper object, labelled Stepper Phidget, 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:
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.
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.
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.
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.
For more information, have a look at the Stepper Motor and Controller Primer.
|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|
|Available Current per Coil Max||4 A|
|Supply Voltage Min||10 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|
|Recommended Wire Size||16 - 26 AWG|
|Operating Temperature Min||-20 °C|
|Operating Temperature Max||85 °C|
|Date||Board Revision||Device Version||Comment|
|May 2019||0||101||Product Release|
|May 2019||0||110||Added failsafe timer functionality|
|October 2019||0||112||Fixed msfollower bug|
|Bipolar Stepper Controller||Stepper||0|
|Product||Controller Properties||Electrical Properties|
|Image||Part Number||Price||Motor Position Resolution||Stepper Velocity Resolution||Stepper Velocity Max||Available Current per Coil Max|
|1067_0B||$90.00||1⁄16 Step (40-Bit Signed)||1 1/16 steps/sec||250000 1/16 steps/sec||4 A|
|STC1000_0||$55.00||1⁄16 Step (40-Bit Signed)||1 1/16 steps/sec||115000 1/16 steps/sec||4 A|
|STC1002_0||$80.00||1⁄16 Step (40-Bit Signed)||1 1/16 steps/sec||115000 1/16 steps/sec||8 A|
|STC1003_0||$40.00||1/16 Step (40-Bit Signed)||1 1/16 steps/sec||115000 1/16 steps/sec||4 A|