SmartPrintCoreH7x: Open Source 3D Printer Mainboard

The SmartPrintCoreH7x is an open-source 3D printer mainboard based on the STM32H7 series microcontroller. It supports 5+1 stepper drivers, with the option to expand by adding more sets of 5 drivers through the upcoming "SmartPrintCore Extravaganza". With a jumper-less setup and a design built for flexibility, SmartPrintCoreH7x is dedicated for makers, tinkerers, and the industry to build and customize.

Features: 

1. Developed in KiCad.
2. Powered by STM32H723 MCU.
3. Supports 5+1 Stepper motors (Expandable in multiples of 5 using SmartPrintCore Extravaganza expansion board).
4. Supports dedicated five closed-loop external stepper ports.
5. USB-C with auto power switching for seamless MCU power management without setting jumpers.
6. Four PWM and two always-on fan ports (Total 6 Fan ports).
7. Dual voltage compatibility with 24V and 12V power supplies.
8. Four servo channels.
9. Single side-entry locking connector for simplified power input.
10. TI buck converters ensure efficient and reliable power supply to SBC and components.
11. Dedicated 5V supply for SBC (10A max, to support Bigger LCD and other SBC peripherals) with locking connector and Type-C port.
12. Auxiliary power: 5V 5A and 12V 5A for peripherals and fans.
13. 3.3V 1A auxiliary supply for Wi-Fi modules and small devices.
14. High-efficiency MOSFETs for cooler operation.
15. 15A heated bed with a locking connector.
16. Three high-power heaters with locking connectors.
17. Onboard slow-burning fuse for added safety.
    • Optional: External additional inline fuses for power input are recommended (included in BOM).
18. DIP switch configuration for easy sensorless homing setup.
19. Preconfigured switchable microstepping with preinstalled SMD resistors.
20. Buffered signals for motor SPI and UART.
21. Supports both Marlin and Klipper firmware.
22. Clearly marked stepper drivers for easy orientation identification and setup.

Warranty: 6 Months manufacturer warranty against any manufacturing defect only (doesn't include accidental or intentional damage by user).

DISCLAIMER: This product is sold as a development board and is not certified by CE, FCC, or any other regulatory bodies. It is the sole responsibility of the integrator or manufacturer to ensure that the final device incorporating this board complies with all applicable local and global laws and certifications.

Note:
1. cost excludes Local taxes, Import/Export Duties and Shipping Costs.
2. Connector Set (Optional) Includes Original JST and Molex connector cable sets that can crimped or soldered to your machine connections