Creality CR-3040 Pro Mainboard V4.2.7 for CR-30 3DPrintMill

The Creality CR-3040 Pro Mainboard (V4.2.7) is a high-performance replacement control board designed specifically for the Creality CR-30 3DPrintMill (also known as CR-3040). Featuring an STM32F103RET6 ARM Cortex-M3 microcontroller with 512KB flash and 64KB RAM, this board delivers reliable and silent operation thanks to integrated TMC2208 stepper drivers in UART mode. It supports 4 axes (X, Y, Z, E), one hotend and one heated bed output, multiple thermistor and fan connections, and includes USB-B and SD card interfaces. Pre-installed with firmware for the CR-30, it ensures easy drop-in replacement and enhanced printing performance.

Advantages

Upgrade or replace your CR-30 3DPrintMill mainboard with this genuine Creality part. The V4.2.7 revision offers improved stability and silent stepper motor operation. With thermal runaway protection and a pre-installed bootloader, it provides a safe and straightforward upgrade path.

Suitable for

• Creality CR-30 3DPrintMill (CR-3040) printers
• Users seeking a direct replacement mainboard
• Enthusiasts wanting silent printing with TMC2208 drivers

Key specifications

• Board Version: V4.2.7
• Microcontroller: STM32F103RET6 (ARM Cortex-M3)
• Flash Memory: 512KB, RAM: 64KB
• Stepper Drivers: Integrated TMC2208 (UART mode, silent)
• Input Voltage: 24V DC
• Stepper Axes: 4 (X, Y, Z, E)
• Heater Outputs: 1x Hotend, 1x Heated Bed
• Thermistor Inputs: 2 (Hotend, Heated Bed)
• Fan Outputs: Multiple (Part Cooling, Hotend Fan, Mainboard Fan)
• Connectivity: USB-B, SD Card Slot
• Display Interface: CR-30 specific LCD
• Firmware: Pre-installed for CR-30 3DPrintMill
• Compatibility: Creality CR-30 3DPrintMill (CR-3040)
• Safety: Thermal Runaway Protection

Recommendations

For best results, ensure your printer is powered off before installation. This mainboard is a direct replacement; no additional modifications are required. If you encounter any issues, consult the CR-30 user manual or contact Creality support.