Pololu Tic T249 USB Multi-Interface Stepper Motor Controller (Connectors Soldered)

The Tic family of stepper motor controllers makes it easy to add basic control of a bipolar stepper motor to a variety of projects. These versatile, general-purpose modules support six different control interfaces: USB for direct connection to a computer, TTL serial and I²C for use with a microcontroller, RC hobby servo pulses for use in an RC system, analog voltages for use with a potentiometer or analog joystick, and quadrature encoder for use with a rotary encoder dial. They also offer many settings that can be configured using Pololu's free configuration utility (for Windows, Linux, and macOS). This software simplifies initial setup of the device and allows for in-system testing and monitoring of the controller via USB (a micro-B USB cable is required to connect the Tic to a computer).

The table below lists the members of the Tic family and shows the key differences among them.

	Tic T500	Tic T834	Tic T825	Tic T249	Tic 36v4
Operating voltage range:	4.5 V to 35 V(1)	2.5 V to 10.8 V	8.5 V to 45 V(1)	10 V to 47 V(1)	8 V to 50 V(1)
Max continuous current per phase(no additional cooling):	1.5 A	1.5 A	1.5 A	1.8 A	4 A
Peak current per phase(additional cooling required):	2.5 A	2 A	2.5 A	4.5 A	6 A
Microstep resolutions:	fullhalf1/41/8	fullhalf1/41/81/161/32	fullhalf1/41/81/161/32	fullhalf1/41/81/161/32	fullhalf1/41/81/161/321/641/1281/256
Automatic decay selection:
Automatic gain control (AGC):
Driver IC:	MP6500	DRV8834	DRV8825	TB67S249FTG	discrete MOSFETs

1 See product pages and user’s guide for operating voltage limitations.

Tic T500 USB Multi-Interface Stepper Motor Controller, bottom view with dimensions.

Tic T834 USB Multi-Interface Stepper Motor Controller, bottom view with dimensions.

Tic T825 USB Multi-Interface Stepper Motor Controller, bottom view with dimensions.

Tic T249 USB Multi-Interface Stepper Motor Controller, bottom view with dimensions.

Tic 36v4 USB Multi-Interface High-Power Stepper Motor Controller, bottom view with dimensions.

Features and specifications

• Open-loop speed or position control of one bipolar stepper motor
• A variety of control interfaces:
  • USB for direct connection to a computer
  • TTL serial operating at 5 V for use with a microcontroller
  • I²C for use with a microcontroller
  • RC hobby servo pulses for use in an RC system
  • Analog voltage for use with a potentiometer or analog joystick
  • Quadrature encoder input for use with a rotary encoder dial, allowing full rotation without limits (not for position feedback)
  • STEP/DIR inputs for compatibility with existing stepper motor control firmware
• Acceleration and deceleration limiting
• Maximum stepper speed: 50,000 steps per second
• Very slow speeds down to 1 step every 200 seconds (or 1 step every 1428 seconds with reduced resolution).
• Selectable microstep modes up to 1/256-step resolution:
  • The Tic 36v4 supports full-step to 1/256-step modes
  • The Tic T825, Tic T834, and T249 support full-step to 1/32-step modes
  • The Tic T500 supports full-step to 1/8-step modes
• Digitally adjustable current limit
• Optional safety controls to avoid unexpectedly powering the motor
• Input calibration (learning) and adjustable scaling degree for analog and RC signals
• 5 V regulator (no external logic voltage supply needed)
• Optional limit switch inputs with homing capabilities
• Optional kill switch inputs
• STEP/DIR outputs for controlling external stepper motor drivers
• Connects to a computer through USB via a USB A to Micro-B cable (not included)
• Free configuration software available for Windows, Linux, and macOS
• Arduino library makes it easy to get started using these controllers with an Arduino or compatible board
• Comprehensive user’s guide

Details for item #3138

The Tic T249 is based on the TB67S249FTG IC from Toshiba, which allows the Tic T249 to offer several unique and innovative features. One of these is Toshiba’s Active Gain Control (AGC), which automatically reduces the stepper motor current below the set limit based on the actual load on the motor, allowing for reduced unnecessary heat generation and higher peak power when the motor actually needs it. Another is Toshiba’s Advanced Dynamic Mixed Decay (ADMD) technology, which dynamically switches between slow and fast decay modes based on the actual motor current, providing higher efficiency and smoother steps at high speed than you get with traditional timing-based mixed decay.

The Tic T249 can operate from 10 V to 47 V and can deliver up to approximately 1.8 A continuous per phase without a heat sink or forced air flow (the peak current per phase is 4.5 A). This version is sold with connectors soldered so no soldering is necessary to use it.

Tic T249 USB Multi-Interface Stepper Motor Controller (Connectors Soldered).

A version is also available with header pins and terminal blocks included but not soldered.

People often buy this product together with:

Pololu Stamped Aluminum L-Bracket for NEMA 17 Stepper Motors

Stepper Motor: Bipolar, 200 Steps/Rev, 42×38mm, 2.8V, 1.7 A/Phase

Tic 36v4 USB Multi-Interface High-Power Stepper Motor Controller (Connectors Soldered)

Dimensions

General specifications

Identifying markings

Notes:

1

Reverse voltage protection only works up to 40 V.

2

Without a heat sink or forced air flow.

3

With sufficient additional cooling.

4

To -40 V. Connecting supplies over 40 V in reverse can damage the device.

Documentation and other information

• 

  Tic Stepper Motor Controller User’s Guide (Printable PDF)

  User’s manual for the Pololu Tic USB Stepper Motor Controller.

File downloads

• Tic Software and Drivers for Windows (10MB msi)

• Tic Software for Linux (x86) (8MB xz)

• Tic Software for Linux (Raspberry Pi) (6MB xz)

• Tic Software for macOS (8MB pkg)

• Dimension diagrams of the Tic USB Multi-Interface Stepper Motor Controllers (1MB pdf)

• 3D models of the Tic USB Multi-Interface Stepper Motor Controllers (11MB zip)

  This file contains 3D models (in the step file format) of all the Tic USB Multi-Interface Stepper Motor Controllers.

• Drill guides for the Tic USB Multi-Interface Stepper Motor Controllers (23k zip)

  This file contains DXF drawings that show the locations of the holes on all of the different Tic PCBs.

• MPS MP6500 stepper motor driver datasheet (1MB pdf)

• TB67S249FTG datasheet (533k pdf)

• UM10204 I²C-bus specification and user manual (1MB pdf)

  The official specification for the I²C-bus, which is maintained by NXP.

Recommended links

• Video: Getting Started with the Tic Stepper Motor Controllers

  Getting up and running with your Tic stepper motor controller from Pololu is easy. This video will guide you through the basic steps to connect your Tic to its software and control a stepper motor from your computer.

• Tic Stepper Motor Controller software source code

  This repository contains the source code of the Pololu Tic Command-line Utility (ticcmd) and the Pololu Tic Control Center (ticgui). It also has drivers for Windows and build instructions.

• Tic Stepper Motor Controller library for Arduino

  This is a library for the Arduino IDE that helps interface with a Tic Stepper Motor Controller using serial or I²C.

• Texas Instruments DRV8825 stepper motor driver datasheet

• Texas Instruments DRV8834 stepper motor driver datasheet