M8PMain Features 1. Adopt 32-bit 64MHz ARM Cortex-M0+ series STM32G0B1VET6 as the main control chip; 2. The chip, TPS5450-5A, supports DC12/24V input. The output current of the chip is up to 5A, and the value can reach 6A, which perfectly supports the supply of ; 3. There is a BOOT button reserved on the motherboard, users can update the bootloader through DFU;4. The thermistor part includes a protection circuit that protects the main control chip from the possibility of burning caused by leakage of the heated bed or heater cartridge; 5. 24V, 12V, and 5V voltages are available for CNC fans, eliminating the need for an external transformer module, thereby reducing the chance of damage to the motherboard due to improper operation;6. The thermistor can select the pull-up resistor value through the jumper, in this way, it supports PT1000 without an external module, which is convenient for customers to DIY; 7. The MCU firmware can be updated via an SD card, or through Klipper's make flash using DFU; 8. The motherboard and the core board use the BTB connection to allow using other solutions other than CM4;9. On-board -driver SPI and UART working modes, on-board DIAG function pins, can be used by simply plugging and unplugging the jumper cap; 10. Support filament runout detection, auto shutdown, BLTouch, RGB lights... 11. High efficiency MOSFET for less heat generation; 12. Adopt replaceable fuse for easy replacement;13. Three-way four-wire fan interface is reserved, and can be used to connect the water cooling device;14. The proximity switch interface is reserved, supports NPN and PNP types, (24V, 12V, 5V) voltage selection is available, common voltage selection with VFAN6; 15. Provide the SPI expansion interface to allow Klipper firmware users to connect an external acceleration sensor for acceleration compensation.CB1 Main Features1. CPU: Allwinner H616, Quad-core Cortex-A53 @1.5GHz2. GPU: Mali G31 MP2, support OpenGL3.23. RAM: 512MB/1GB DDR3L SDRAM4. Display: HDMI2.0A interface, support 4K display5. USB 2.0 port6. 100M Ethernet + 100M WiFi7. The same BTB header as the CM4material: plasticColor as shownPackage Contents:1 x CB1 board1 x M8P motherboard8 x TMC2209 AccessoriesOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.