Creality 3D Ender-3 S1 Mainboard Kit

The Creality Ender-3 S1 Mainboard Kit V4.0.1 is a direct replacement and upgrade control board engineered for the Ender-3 S1 series. Unlike generic 8-bit boards that produce audible stepper noise and lack modern connectivity, this 32-bit board runs an ARM Cortex-M4 core at 100 MHz, delivering smoother motion, faster processing, and near-silent operation thanks to integrated TMC2209 drivers in UART mode. It is the exact board used in the Ender-3 S1, S1 Pro, and S1 Plus, ensuring perfect fit and full firmware compatibility.

Highlights

• 32-bit STM32F401RET6 microcontroller with 512KB flash and 96KB RAM for responsive performance
• Integrated TMC2209 stepper drivers in UART mode for silent, precise motor control
• Dedicated CR Touch / BLTouch probe port for automatic bed leveling
• Pre-installed Marlin firmware and bootloader for plug-and-play installation
• Robust thermal runaway protection and multiple fan outputs for reliable printing

In daily use

Installing this mainboard transforms the printing experience. The silent stepper drivers eliminate the characteristic whine of older printers, making it suitable for home or office environments. The dedicated probe port simplifies adding automatic bed leveling, while the USB-C and SD card interfaces offer flexible file transfer. The board’s 24V input matches the S1 power supply, and the three fan ports allow independent control of hotend, part cooling, and mainboard cooling for optimal thermal management.

Full specifications

• Board type: 32-bit silent mainboard, version V4.0.1
• Microcontroller: STM32F401RET6, ARM Cortex-M4 core
• Clock speed: 100 MHz
• Memory: 512KB flash, 96KB RAM
• Stepper drivers: Integrated TMC2209, UART mode
• Motor axes: 4 (X, Y, Z, E0)
• Input voltage: DC 24V
• Heater outputs: Hotend, heated bed
• Sensor inputs: 2x thermistor (TH0, THB), 3x endstop (X, Y, Z)
• Probe port: Dedicated CR Touch / BLTouch
• Display interface: Dedicated LCD/Screen port
• Communication: USB-C, SD card slot
• Fan ports: 3 (hotend, part cooling, mainboard)
• Compatibility: Creality Ender-3 S1, Ender-3 S1 Pro, Ender-3 S1 Plus
• Features: Silent operation, thermal runaway protection, bootloader pre-installed

Final note

This genuine Creality mainboard kit is the ideal choice for repairing a damaged board or upgrading an older Ender-3 S1 to the latest silent technology. It includes everything needed for a straightforward swap, restoring your printer to peak performance.