Shield Specification: Operating Voltage : 12V Standard interfaces (as that of the extruder) Reserved GCI like I2C and RS232 3 MOSFET’s are applied to the heater/ fan and thermistor circuit Another 5A added to protect the component parts An 11A fuse is added to the hotbed Support 5 stepper drive board The adoption of Pin Header as Pololu makes it more convenient to repair or change I2C and SPI are reserved for expanding All the MOSFET can be controlled by PWM Use the interface of the servo motor to adjust the level of the printing platform automatically Adding an SD module for SD ramps module LED can indicate the status of the heater (the open and close of MOS) Expandable to control other accessories Pololu boards are on pin header sockets so they can be replaced easily or removed for use in future designs 2 stepper motor for Z axis in parallel
