ZK-SMC02 Integrated Stepper Motor Driver Controller Module - Forward/Reverse/Speed Control

Specifications

• Model: ZK-SMC02
• Motor Compatibility: 2-Phase Stepper Motors (Nema 17 / Nema 23)
• Input Voltage: DC 5V - 30V
• Output Current: 4A Peak (Adjustable via software/hardware limits)
• Control Axis: Single Axis
• Speed Range: 0.1 - 999 RPM
• Pulse Control: 1 - 9,999,999 pulses (Forward/Reverse)
• Delay Timer: 0.0 - 999.9 seconds (Adjustable dwell time)
• Cycle Loop: 1 - 9999 times (or Infinite Loop)
• Acceleration/Deceleration: Adjustable Smooth Start/Stop profiles (S-Curve simulation)
• Communication: TTL Serial (UART) for external command integration
• Display: Dual-line LCD (Speed / Delay / Cycle Count)
• Mounting: Panel Mount Ready

Applications

• Automated Camera Sliders: Create ultra-smooth time-lapse rails with precise loop and delay settings.
• Linear Actuators & Winders: Perfect for coil winding machines where exact turn counts are critical.
• Liquid Dispensing: Control peristaltic pumps for exact dosage dispensing in lab environments.
• Conveyor Systems: reliable continuous run or index-based movement for small production lines.
• Testing Jigs: Automate repetitive push/pull testing for mechanical components.

Project Evolution

• Prerequisites: If you have struggled with the basic A4988 Driver + Arduino combo, you know the pain of writing code just to change a speed setting.
• The Upgrade: The ZK-SMC02 unlocks "Code-Free Motion". You no longer need a laptop to tweak settings; simply turn the potentiometer dial to adjust speed or delay on the fly. It turns a complex programming task into a simple menu selection.
• Effort Level: Beginner to Intermediate. Requires basic wiring knowledge (identifying motor coils).
• Hardware Required: A 12V or 24V Power Supply (min 3A) and a Nema 17/23 Stepper Motor.

 Virtual Technician: Wiring & Safety Guide

• Probots Logic-Safe : The TTL serial port is logic-level sensitive. Ensure you are using the correct voltage levels if interfacing with external microcontrollers.

      Motor Wiring (4-Wire):

• A+ / A-: Connect to one coil pair of the stepper.
• B+ / B-: Connect to the second coil pair.
• Tip: Touch two motor wires together; if the shaft resists turning, that is a pair.

      Power Input:

• DC+ / DC-: Connect your 5V-30V Power Supply here. WARNING: Do not reverse polarity.

      External Control (Optional):

• Terminals are available for external Start/Stop, CW, and CCW buttons if you need remote operation away from the panel.

Package Includes

• 1 xZK-SMC02 Integrated Stepper Motor Driver Controller Module - Forward/Reverse/Speed Control

Frequently Asked Questions (FAQ)

• Can I use this with a Nema 23 motor?
  Yes, as long as the motor's current rating is within 4A and the voltage is supported (up to 30V).
• Does this module need an Arduino to work?
  No, it is a standalone controller. It generates its own pulses and drives the motor directly.
• What happens if I disconnect power?
  The ZK-SMC02 has non-volatile memory and will retain your speed, mode, and delay settings after power loss.
• Can I control this via a PC?
  Yes, it supports TTL serial communication, allowing you to send commands via a USB-TTL adapter.
• How do I reverse the default direction?
  You can swap the A+ and A- wires, or use the menu settings to toggle the direction logic.
• Does it support micro-stepping?
  The manual specifies "subdivision" settings which allow you to smooth out the motion, similar to micro-stepping.
• What is the maximum speed in RPM?
  The display allows settings up to 999 RPM, but actual torque at that speed depends on your supply voltage and motor physics.
• Can I attach external limit switches?
  The board typically has inputs for external signals which can be configured for stop/limit functionality depending on the mode.
• Is the display backlit?
  Yes, the LCD is backlit for visibility in low-light industrial environments.
• Why is my motor vibrating but not spinning?
  This usually means the coil pairs are wired incorrectly (e.g., A+ connected to B+). Check your coil pairs with a multimeter.
• Can I use a 36V or 48V power supply?
  No, the absolute maximum is 30V. Using higher voltage will damage the internal regulator and driver.
• Does it have acceleration control?
  Yes, you can set acceleration/deceleration levels (F-12 menu) to prevent the motor from stalling on start.
• How do I set the number of steps per revolution?
  There is a parameter (usually F-09) to calibrate the controller to your specific motor's step angle (e.g., 1.8°).
• Can I run two motors from one controller?
  You can wire two identical motors in series or parallel (if current permits), but they will move in perfect sync.
• What is "Round Trip" mode?
  This is likely Mode P05 or P06, where the motor moves forward, waits, moves back, and repeats.
• Is there a housing available?
  The product itself is a panel-mount housing module, designed to snap into a rectangular cutout.
• Can I use a battery pack?
  Yes, a 12V or 24V LiPo/Lead-Acid battery works well, provided it can handle the current draw.
• Does it support continuous rotation?
  Yes, you can set it to run continuously in CW or CCW modes without a set distance.
• How accurate is the delay timer?
  The delay is adjustable in 0.1-second increments, sufficient for most automation tasks.
• Is the serial protocol documented?
  Yes, the manual (available online) lists the command set for controlling parameters via UART.