Feature:MKS DLC is a controller board developed for Laser engraving,CNC,and Writing Robot.It's cheap,with complete interfaces,and supports external big drivers,which is suitable for both DIY and manufacturers.Out size:90mm*70mmCPU:MEGA328PStepper driver:A4988,DRV8825,TMC2208,TMC2100,LV8729,TB6600,ET..