RUMBA Mainboard 32Bit 3D Printer Mainboard + A4988 Stepper Motor Driver Kit for 3D Printer

Package Included rumba Mainboard 1USB Cable 1A4988 driver 6Specifications 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 0Description RUMBA32 is a brand new control board from Aus3D RUMBA32 relies on Marlin 2 0 s 32 bit support which is rapidly evolving so documentation and configuration settings may be subject to change Please make sure you are comfortable following the instructions in our getting started guide before purchasing RUMBA32 There is a small fault in the current batch of boards that means the SPI mode for TMC stepper drivers will not work correctly out of the box This requires a small mod with a soldering iron for each socket being used with an SPI mode stepper driver We can apply this mod on purchase if you plan to use SPI drivers If you have purchased a board previously we can provide instructions on the mod or can organise a return to have the modification made Please see our mos instructions pdf or contact us for assistance They re great plenty of stepper drivers heater fan channels to spare and they re built like a tank Their biggest weakness Like most other printer control boards they re 8 bit Built around the same ATmega2560 that powers RAMPS there are limits to what they can do and how quickly they can do it These limits are