Features and advantages: 1. Integrate 2560 and ramps1.4 on one board, which solves the problem of cumbersome and easy failure of Ramps1.4 combination interface. 2. The user can replace the motor drive by himself, supporting 4988 drive, 8825 drive and TMC2100 drive. 3. Reserve an external drive signal, and an external large drive can be used to drive 57 and 86 motors. 4. Using high-quality MOSFET tubes, the heat dissipation effect is better, and the long-term working stability is ensured. 5. Using a dedicated power chip, support 12V-24V power input, to solve the problem of heating and insufficient power supply of the Ramps voltage conversion chip. 6. The stable and reliable filter circuit greatly reduces the possibility of interference, and avoids crashes and random running during the printing process to the greatest possible extent. 7. The CH340 serial chip is adopted, which reduces the cost while ensuring stability and reliability, and solves the problem of difficult driver installation in the past 16U2. 8. It can accept 24V input. Under the same system power, the hot-bed current can be reduced to 1/4, which effectively solves the heating problem of the hot-bed MOS tube. 9. Use the open source firmware Marlin, the configuration is exactly the same as ramps 1.4, which can directly replace Ramps1.4o 10. It can be directly connected to the 2004 LCD display screen, and can support the TFT28 and TFT32 touch screens developed by the maker. 11. The XYZ axis uses different color terminals to correspond to the motor and the limit switch, which is convenient for wiring. 12. Humanized design, use terminals of different colors to distinguish the driving direction, reduce the probability of reverse insertion, and prevent damage to the main engine due to reverse drive insertion. board.