DM542 4.2A Stepper Motor Driver Controller
Price in Sri Lanka
Motor DriversElectromechanical Modules
Tronic.lk
Rs 3,300
Out of stock
Updated 01 Nov 2026
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Description
The DM542 Stepper Motor Driver is a high-performance digital microstepping driver designed for precise and reliable control of NEMA17, NEMA23 and NEMA24 stepper motors. With a peak output current of 4.2A, this driver is ideal for CNC machines, 3D printers, laser engravers, robotics, and industrial automation applications.
Engineered with advanced microstepping technology, the DM542 delivers smooth motion, low vibration, and stable torque across a wide speed range. Its robust aluminum casing and comprehensive protection features ensure long-term durability and consistent performance.
Key Features:
- High-performance digital stepper motor driver
- Supports NEMA17 / NEMA23 / NEMA24 bipolar stepper motors
- Up to 4.2A peak current with adjustable RMS current
- Wide 20–50V DC power input range
- Smooth, quiet operation with advanced microstepping
- Built-in protections: over-voltage, under-voltage & short-circuit
- Automatic idle-current reduction for efficiency
- Durable aluminum enclosure for superior heat dissipation
- Easy setup via DIP switches – ideal for CNC & automation projects
Technical Specifications:
- Model: DM542
- Input Voltage: 20–50V DC
- Output Current: 1.0A – 4.2A (adjustable)
- Microstepping Resolution: 400 – 25,600 steps/rev
- Control Inputs: PUL (Pulse), DIR (Direction), ENA (Enable)
- Logic Input Voltage: 5V
- Protection Functions: Overheat / Overcurrent / Short-circuit / Undervoltage
- Compatible Motors: NEMA17, NEMA23, NEMA24
- Applications: CNC routers, laser engravers, 3D printers, robotics, industrial automation
DIP Switch Configuration (Microstepping + Current Settings)
Optimized for stepper motor tuning, the DM542 offers multiple DIP switch options for fine control of current output and microstepping resolution.
1. Output Current Settings (SW1–SW3)
| Peak Current | RMS Current | SW1 | SW2 | SW3 |
|---|---|---|---|---|
| 1.00A | 0.71A | ON | ON | ON |
| 1.46A | 1.04A | OFF | ON | ON |
| 1.91A | 1.36A | ON | OFF | ON |
| 2.37A | 1.69A | OFF | OFF | ON |
| 2.84A | 2.03A | ON | ON | OFF |
| 3.31A | 2.36A | OFF | ON | OFF |
| 3.76A | 2.70A | ON | OFF | OFF |
| 4.20A | 3.00A | OFF | OFF | OFF |
SW4: Auto current reduction (ON recommended)
2. Microstepping Settings (SW5–SW8)
| Microstep | Pulses/Rev | SW5 | SW6 | SW7 | SW8 |
|---|---|---|---|---|---|
| Full Step | 200 | ON | ON | ON | ON |
| 1/2 Step | 400 | OFF | ON | ON | ON |
| 1/4 Step | 800 | ON | OFF | ON | ON |
| 1/8 Step | 1600 | OFF | OFF | ON | ON |
| 1/16 Step | 3200 | ON | ON | OFF | ON |
| 1/32 Step | 6400 | OFF | ON | OFF | ON |
| 1/64 Step | 12800 | ON | OFF | OFF | ON |
| 1/128 Step | 25600 | OFF | OFF | OFF | ON |
Pinout Description (Wiring Guide)
Perfect for SEO and user clarity, here is a complete pin description for the DM542 stepper motor controller.
1. Control Signal Pins (P1 Connector)
| Pin | Function | Description |
|---|---|---|
| PUL+ | Pulse + | Step pulse input (5V) |
| PUL- | Pulse – | Connects to controller GND |
| DIR+ | Direction + | Controls rotation direction |
| DIR- | Direction – | Connects to controller GND |
| ENA+ | Enable + | Optional – driver enable/disable |
| ENA- | Enable – | Connects to controller GND |
2. Motor Output Pins (High-power output)
| Pins | Description |
|---|---|
| A+ / A− | Stepper Motor Coil A |
| B+ / B− | Stepper Motor Coil B |
3. Power Supply Pins
| Pin | Description |
|---|---|
| V+ | 20–50V DC Input |
| V− | Power Ground |
Frequently asked questions
What is the price of DM542 4.2A Stepper Motor Driver Controller in Sri Lanka?▾
The current price of DM542 4.2A Stepper Motor Driver Controller in Sri Lanka is Rs 3,300 at Tronic.lk.
Is DM542 4.2A Stepper Motor Driver Controller available in Sri Lanka?▾
DM542 4.2A Stepper Motor Driver Controller is currently out of stock at Tronic.lk in Sri Lanka.
Where can I buy DM542 4.2A Stepper Motor Driver Controller in Sri Lanka?▾
You can buy DM542 4.2A Stepper Motor Driver Controller in Sri Lanka at Tronic.lk. Visit 37left.lk to compare prices across multiple shops and find the best deal.
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