ZONESTAR ZM3E4 32-Bit 3D Printer Control Board - Specifications

General Information

• Brand Name: ZONESTAR
• Origin: Mainland China
• Item Type: Motherboard for 3D Printers
• Model Number: ZM3E4 (Latest Version: V2.1, compatible with previous versions)

Technical Specifications

1. Processor and Circuit Design

   • Built-in STM32F103VET6 MCU
   • Working Frequency: 72 MHz
   • Memory: 256K Flash ROM, 48K RAM
   • Board Design: 4-layer circuit board for improved heat dissipation and EMI resistance.

2. Motor and Driver Support

   • Motor Driver Sockets: 8 (supports up to 5 extruders).
   • Dual independent Z-axis drivers with endstops.
   • Compatible with multiple stepper motor drivers.

3. Connectivity and Expansion

   • Support for WiFi and TFT-LCD control panels.
   • Bed leveling sensor support (Proximity Sensor and BL-Touch).
   • Laser control connector built-in.

4. Power and Fuses

   • Hotbed Current Capacity: ≤ 10A
   • Hotend Current Capacity: ≤ 5A
   • Motor Driver Total Current Capacity: ≤ 6A
   • 3 fuses for hotbed and DC input; 8 fuses for motor driver modules.

5. Thermistor and Fan Control

   • 3x ADC temperature connectors for thermistors.
   • 2x fan control connectors.

6. PWM and Endstops

   • 5x PWM capable power MOSFET outputs with voltage selector for the main power (bed, extruder, fans).
   • 6x endstop connectors with filter capacitors and pull-up resistors.

7. Additional Features

   • Printing Finish Power-Down: Requires an external Power UP button.
   • 4 external servo interfaces with hardware PWM (one multiplexed with FAN1).
   • Simplified wiring with combined motor and limit switch connectors.

Physical Specifications

• Dimensions:
  • ZM3E4 Width: 117mm (compared to ZRIB V6 at 110mm).
• Package: Includes 1x ZM3E4V2.x control board.

Compatibility and Notes

1. Firmware: Preloaded with test firmware; users can upload custom firmware via SD card.
2. Hardware: Compatible with Reprap and CNC devices.
3. Important Usage Notes:
   • Ensure proper direction when plugging in motor driver modules to prevent board damage.
   • Verify dimensions for compatibility with your 3D printer.
   • ZONESTAR may substitute the MCU with fully compatible alternatives due to chip shortages.

Package and Version

• Package Includes: 1x ZM3E4V2.x board.

Document download link:

https://github.com/ZONESTAR3D/Control-Board/tree/main/32bit