Features • Support for Various Screens - Compatible with multiple display options including LCD2004, 12864, and MKS MINI12864V3 for flexible 3D printer setups • High-Speed 32 Bit Processing - Equipped with an ESP32 DOWD V3 chip, this motherboard offers dual core performance with clock speeds up to 240MHz for efficient operation • Versatile Connectivity Options - Features integrated Wi-Fi and Bluetooth modules, allowing users to control printing via web pages and update firmware easily through USB • Ample Memory for Applications - Built-in 8M byte Flash memory chip ensures reliable operation and effective protection across diverse application scenarios • Enhanced Motor Protection - Includes a specialized circuit design for back EMF protection, significantly reducing damage to stepper motor drivers for longer lifespan Features: 1、SUPPORT VARIOUS SCREEN: This is a 3D printer main control board with onboard ESP32 wifi, supports for Marlin2.0 firmware, in addition to ordinary LCD2004, 12864 screen, also supports for MKS MINI12864V3, and for MKSTFT serial screen 2、32 BIT MICROPROCESSOR: Built in ESP32 DOWD V3 chip, for Xtensa dual core 32 bit LX6 microprocessor, supporting clock frequency up to 240MHz 3、POWERFUL AND VERSATILE: The main board adopt ESP32 WROOM 32U module, embedded dual core 32 bit high speed MCU, the clock is up to 240MHz. And integrate WIFI, Bluetooth module, update firmware through USB, can connect WIFI and web page to control printing. The performance is very powerful 4、8M BYTE CHIP: In addition, the module has a built in 8M byte Flash memory chip, which provides effective protection for more application scenarios 5、BACK EMF PROTECTION: VEXP has designed a protection circuit for the back EMF generated by the stepper motor, which greatly reduces the damage to the motor driver Specification: Item Type: ESP32 3D Printer Motherboard MCU: ESP32 WROOM 32U MCU Frequency: 240MHz Flash: 8192K RAM: 520Kb Power Input: DC12-24Vbetween20A Heating Head, Hot Bed: 2 Heating heads, 1 hot bed Temperature Measurement: 3NTC100K: TH1, TB, TH2 (requires jumper selection) Controllable Fans: 2 Way controllable fans Motor Interface: 5 Axes drive, 6 motor interfaces (double Z axes parallel output) Drive Mode: STEP or DIR standard mode Drive Signal: Pin out the signal, support external Subdivision Settings: DIP switch to set subdivision LCD Interface: Support ordinary LCD2004, 12864; support for MKS MINI12864V3 Serial Port: Reserved serial port 2, support for MKSTFT series serial port screen Limit: X, YZ, MT DET 3D TOUCH: Support Power Protection: Non reverse polarity protection and power spike protection Firmware: For Marlin2.0.x Firmware Update Method: Online down Package List 1 x ESP32 3D Printer Motherboard 1 x USB Cable A C Type C(1 meter)