Mini-Rambo 1.3 Mainboard Integrated Controller Board + 4pcs Heatsinks For Prusa i3 MK2 3D Printer

Description RAMBo RepRap compatible Mother Board is an all in one RAMPS class motherboard targeting convenience reliability and performance Features Logic MEGA compatible Atmega2560 and Atmega32u2 processors are compatible with all RAMPS class firmware Crystals for both usb and mcu timing accurate to 10ppm 4 Thermistor jacks All extra pins broken out on both processors allows using the 32u2 for LUFA AVR programmer etc 2 channel SDRAMPS compatible SPI breakoutMotor Drivers 5 A4982 1 16th microstep motor drivers A4984 1 8th prior to v1 1 2 connectors on Z for Prusa Mendel and other dual Z printer designs Digital Trimpot for stepper current control Current limit on driver IC VCC to prevent permanent latchup Microstep mode configured by MCU through firmware no jumpers needed Test points for driver control signals Step and Direction pins are on their own ports for synchronous movement capability Extra driver ports broke out for up to 3 additional drivers some of the motor extension pins are shared with max endstop and a pin allocated for SPI SS extensions PWM DC outputs Extruders Fans Etc 6 outputs Low resistance mosfets for cool running Indicator led for each channelPower Three independent power rails for flexible input power configurations Heated Bed 15A 12 24V version earlier than 1 1 limted to 14A 16V due to fuse rating see rambo development for hacks Extruders and fans 5A 12 24V fuse can be exchanged for up to 10A capacity 10V 26