2560 and ramps1.4 are intergrated on a piece of board, which solves the problem of complicated and easy failure for Ramps1.4 composite interface.Users can change their own motor drive, support 4988 drive and 8825 drive, TMC2100 drive. Using CH340 serial chip to the stable and reliable premise, reduce the cost, and to solve the problem of the previous 16U2 hard drive.24V input can be accepted, and the same system power can reduce the hot bed current to 1/4, effectively solving the hot bed MOS tube heating problem. Using the open source firmware for , the configuration is exactly the same as for ramps1.4, and can replace for Ramps1.4 directly.It can be directly connected to 2004LCD display and 12864LCD display, and can be supported by TFT28 and TFT32 Contact screen. The axis adopts the terminals of different colors to correspond to the motor and the limit switch, and the connection is convenient. The humanized design uses different color terminals to distinguish the driving direction, reduces the probability of inserting and reversing, and prevents the main board from being damage by the oppsite inserted of .The external drive signal is reserved, and the 57 or 86 motor can be driven by a large external drive. new With high quality MOSFET tube, the heat dissipation effect is better and the long time work is stable. The special power chip is used to support the input of 12V-24V power supply and to solve the problem of heating and insufficient power supply for Ramps voltage conversion chip. The stable and reliable filter circuit greatly reduces the possibility of interference, and the most likely to avoid the phenomenon of dead machine and running in the printing process. Warm Tips: Please make sure that the positive and negative are connected reversed before the electricity is connected. Ifit is burned by the user, we do not this kind of problem. Please do not plug the motor and drive in the case of electricity. It is easy to cause to burn; and do not adjust the current during the operation of the motor. The is to disconnect the power, remove the motor, re-power up, adjust potentiometers, and measure the voltage on the potentiometer until the measured voltage is the same as expected. Do not plug in the reverse drive, otherwise it burn , and even burn the motherboard! Motor drive is not included. It is possible to burn down the chip and circuit by the reverse of the power supply. Please turn on the electricity again and again. colour:Black + blue Material:PC+ metal Package Contents: 1 * Controller Motherboard 1 * USB Cable Only 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.