Based on the Duex5 by Think3dPrint3d and Esher3d. This reproduction/modification is not endorsed or supported in any way by Think3dPrint3d or Escher3d".
Support for 2 more thermocouple or PT100 daughter boards, supporting up to 4 more sensors.
Multi-function expansion board 1: comes with 5 additional TMC2660 stepper motor drivers with stall notification, 5 additional extruder heater outputs; 5 servo outputs with 5V power and 5V signal levels, sharing control channels with the heaters, so you can use unused heater channels to drive servos.
Multi-function expansion board 2: comes with 6 additional controlled fan outputs, also usable for driving LEDs etc; The output voltage may be switched between 5V, 12V and VIN, 4 uncommitted general purpose I/O pins; 12V switching regulator, for generating a 12V supply for fans, LEDs etc. when the VIN power is higher than 12V.
Multi-function expansion board 3: 5 additional thermistor inputs, Support for 2 more thermocouple or PT100 daughter boards; supporting up to 4 more sensors; Optional 5V external power input for powering servos, fans etc.