Tic T825 USB Multi-Interface Steppermotor Driver

The Tic T825 is based on the DRV8825 IC from Texas Instruments. It can operate from 8.5 V to 45 V and can deliver up to approximately 1.5 A per phase without a heat sink or forced air flow (absolute maximum is 2.5 A per phase). It has reverse protection for motor power supplies up to 40 V. This version is sold unassembled so soldering is necessary to use it.

A version is also available that requires no soldering to use as the terminal blocks and main header pins are already installed.

Features:

• 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).
• Six different microstep resolutions: full step, half step, 1/4 step, 1/8 step, 1/16 step, and 1/32 step
• 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 kill switch inputs
• 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

Specifications:

• Motor driver: DRV8825
• Control interface: USB; non-inverted TTL serial; I²C; RC servo pulses; analog voltage; quadrature encoder
• Minimum operating voltage: 8.5 V
• Maximum operating voltage: 45 V
• Continuous current per phase: 1.5 A
• Maximum current per phase: 2.5 A
• Maximum step rate: 50000 PPS
• Microstep resolutions: full, 1/2, 1/4, 1/8, 1/16, and 1/32
• Reverse voltage protection?: Y
• Header pins soldered: N

Documents:

• DRV8825 Datasheet
• Tic Stepper Motor Controlelr software source code