Single-axis motor controller designed for bipolar stepper motors

Posted By : Lanna Cooper
Single-axis motor controller designed for bipolar stepper motors

Following the successful TMCM-1110 StepRocker and TMCM-1111 StepRocker Servo, TRINAMIC Motion Control has announced its new StepRocker boards with StealthChop. Just like the first members of the StepRocker family, the TMCM-1211 and TMCM-1316 are open-source single-axis motor controller/driver modules for 2-phase bipolar stepper motors.

Their RS485 and USB interfaces make them suitable for robotics, manufacturing, lab or factory automation and other applications, and for evaluating technology and for those experimenting with a stepper motor for the first time.

Michael Randt, Founder and CEO of Trinamic explained the addition of these two boards to the company’s portfolio: “We understand that development times are getting increasingly shorter. To make sure this doesn’t affect the quality of the system, engineers need to have building blocks that are easy to set up. You don’t want to spend days writing complicated software of tuning electronic components.

With these latest additions to our StepRocker product family, we offer engineers exactly that: Reliable building blocks that are easy to use and offer all the Trinamic technologies needed to stay at the forefront of their industry, including StealthChop.”

Besides StealthChop2, both boards have all the functions one can expect from Trinamic’s products. The TMCM-1211 contains the motion controller and motor driver TMC5160 in combination with an ARM Coretex-M4 processor, while the TMCM-1316 has the additional TMC4361 high end chip. As such, the TMCM-1316 offers S-shaped and linear ramping profiles and closed-loop operation when using an external encoder.

Available from December through Trinamic’s distribution channels, both fully functional development platforms allow for advanced stepper motor control with StealthChop2, StallGuard2, CoolStep, and SpreadCycle. It’s easy to set up using the RS485 or USB interface in combination with Trinamic’s TMCL for remote or standalone operation, with a memory for up to 1024 TMCL commands.

Features and benefits:

  • Single axis controller/driver for 2-phase bipolar stepper motor
  • +10. . . +30VDC supply voltage
  • Up to 5.7A RMS motor current
  • RS485 and USB interface
  • Multi-purpose inputs and outputs
  • Open-source TMCL-Lite library C for development of own application code
  • SixPoint ramps (TMCM-1211)
  • S-shaped, linear and SixPoint ramps (TMCM-1316)
  • Closed-loop operation with external encoder (TMCM-1316)


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