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 Compatible Products tab.
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.
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.
|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||2 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|
|Recommended Wire Size||16 - 26 AWG|
|Operating Temperature Min||-20 °C|
|Operating Temperature Max||85 °C|
* This is the power consumption for the board only. Add the motor's rated power consumption for total maximum power consumption.
|Bipolar Stepper Controller||Stepper||0|
|Stepper||Visual Basic .NET||Windows||Download|
|Date||Board Revision||Device Version||Comment|
|February 2018||0||100||Product Release|
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:
Now that you have everything together, let's start using the STC1001!
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. 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 STC1001.
After plugging the STC1001 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:
For more information, have a look at the Stepper Motor and Controller Primer.
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 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|
|3304_0||$15.00||3 3⁄4°||590 g·cm||4105 RPM||12 V DC||5 mm||171 g||—|
|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||120 RPM||12 V DC||6 mm||217.5 g||26 103⁄121 : 1|
|3322_0||$38.00||0.018°||32 kg·cm||35 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||904 RPM||12 V DC||8 mm||457 g||5 2⁄11 : 1|
|3326_0||$42.00||0.13°||30 kg·cm||295 RPM||12 V DC||8 mm||502 g||13 212⁄289 : 1|
|3327_0||$44.00||0.067°||30 kg·cm||174 RPM||12 V DC||8 mm||503 g||26 103⁄121 : 1|
|3328_0||$46.00||0.035°||48 kg·cm||63 RPM||12 V DC||8 mm||564 g||50 4397⁄4913 : 1|
|3329_0||$48.00||0.018°||48 kg·cm||34 RPM||12 V DC||8 mm||564 g||99 1044⁄2057 : 1|
|3330_0||$28.00||0.9°||11.2 kg·cm||2150 RPM||12 V DC||1⁄4″||695 g||—|
|3331_0||$20.00||1.8°||11 kg·cm||2150 RPM||12 V DC||1⁄4″||686 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||—|
|3336_0||$80.00||1.8°||106 kg·cm||1500 RPM||30 V DC||5⁄8″||5.2 kg||—|
|3340_0||$20.00||0.9°||3.3 kg·cm||2344 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:
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 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||$4.50||11.4 V DC||12.6 V DC||500 mA||European|
|3085_0||$4.50||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|
|PSU4015_0||$20.00||21.6 V DC||26.4 V DC||1 A||—|
|PSU4016_0||$40.00||21.6 V DC||28.8 V DC||15 A||—|
|PSU4017_0||$75.00||20 V DC||26.4 V DC||15 A||—|
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|