RUMBA Mainboard 32Bit 3D Printer Mainboard + 6*SD6128 Stepper Motor Driver Kit for 3D Printer

About SD6128 Stepper Motor Driver Introductios The SureStepr SD6128 is a stepper driver board based on the THB6128 chip It is simple to use and operate using an indexer DIR STEP interface to move the stepper motors The SD6128 is a drop in replacement for Pololu style footprint drivers including the SD8825 A4988 A4983 and Stepsticks One distinct feature of the SD6128 is that heat pad is located at the top of the chip This makes heat sinking a lot easier and does not rely on the already small PCB area for heat dissipation Features ● Made with 4 Layer RoHS PCB● 1 ½ ¼ 1 8 1 16 1 32 1 64 and 1 128 Microstepping● Up to 2 2A peak drive current● Top mounted heat pad● Larger heat sink mounting area● Easy to use DIR Step interface● Output pins for Decay and external Vref● Driver Chip THB6128 with over current and over temp protection● Current Motor Supply 2 2A max● Motor Voltage 35V maxSpecifications of Mainboard Input voltage recommended 12 24VInput voltage limit 6 35VStepping driver 6 support SPI socket StepStick MOSFET output 6Maximum bed current 20AMaximum heater current 5ANumber of thermistor connections 5Limit switch 6Firmware Marlin bufix 2 0Package Included rumba Mainboard 1USB Cable 1SD6128 driver 6