Einsy Rambo 1.2e Mainboard For Prusa i3 MK3 MK3S 3D printer TMC2130 Stepper Drivers SPI 4

Functions

Logic

For Arduino MEGA compatible processors Atmega2560 and Atmega32u2 are compatible with all firmware classes RAMPS.
Crystals for usb and mcu (timing to 10ppm)
3 thermistor connectors + 4th thermistor circuit on ZProbe.

Motor drivers

4 Trinamic TMC2130 1/256 microstep motor drivers (2 Z connectors for Prusa Mendel printer and other dual Z designs).
Step current control using SPI instead of PWM.
Microstep mode configured by MCU via firmware (SPI, no jumpers needed).
PWM DC outputs (extruders, fans, etc.)

4 outputs (1 extruder, 1 BED, 2 low power (fan etc.))

Low-resistance mosfets for cool running
Indication LED for each channel
The fans have a 3-pin fan connector.
The fans have 5V instead of 12-24V power supply.
The FAN connectors have a tachometer feedback pin to the MCU to measure fan speed in capable firmware.

Power

2 input power rails
Heated bed, 15A 12-24V (15A dedicated fuse)
Primary power supply 10A 12-24V: Motors, logic and fans (5A dedicated fuse) + Extruder (5A dedicated fuse).
Built-in SMPS for generating 5V from motor rails, logic and fans.
Provides 5V power to the fans



Connectors
4-pin motor, probe connector - Molex 5057-9404
3-pin fan plug - Molex 5057-9403
2-pole thermistor plug, mechanical terminals - Molex 5057-9402


Packing list:
1pc EinsyRambo 1.2e
1pc USB
4pcs black heat sink

Please note: these are electronics intended for professional assembly by a qualified technician, withdrawal from the contract is only possible as a claim for a defective part!