Product Details:
MK2B Heatbed Characteristics:
● The MK2B heatbed is one of the most current and efficient types on the market.
● Compatibility: Compatible with Prusa and Mendel 3D Printer models.
● Dimensions: 214mm x 214mm.
● Composition: Copper etching (35um) on a FR4 1.6mm Laminate.
Ramps 1.4 Controller Board:
● Features: Includes MOSFET outputs and three thermistor fan circuits for precise temperature control.
● Design: Integrated 5A security and component protection.
● Fuse: Controls an additional 11A heating bed fuse.
● Fitment: Accommodates 5 Pololu stepper driver boards and Pololu board pin socket for future designs.
● Expansion: Arranged with I2C and SPI pins for future expansion.
● Connectors: Servo-style connectors are used for end stop, motor and LEDs. Gold-plated connectors provide a maximum rated current of 3A.
● Add-Ons: Features SD card addition slot and LED indication for heater output.
Mega 2560 :
● Microcontroller: ATmega2560.
● Operating Voltage: 5V.
● Recommended Input Voltage: 7-12V.
● Maximum Input Voltage: 20V.
● Configuration: 54 Digital I/O Pins (14 of which provide PWM output), 16 Analog Input Pins.
● Processing Power: 40 mA DC Current per I/O Pin, 50 mA DC Current for 3.3V Pin.
● Memory: 256 KB Flash Memory (4 KB used by bootloader).
● SRAM: 8 KB.
● EEPROM: 4 KB.
DRV8825 Stepper Motor Driver:
● Features: Adjustable current limit, overcurrent and overtemperature protection, six micro-resolution (down 1/32-step) capability, operating voltage of 8.2 – 45V.
● Performance: Supports up to 1.5A per phase without a heat sink or forced airflow (up to 2.2A with additional cooling).
● Resolution: Steps can be divided into six different sizes: full step, half step, 1/4 step, 1/8 step, 1/16 step, 1/32 step.
● Shutdown/Protection: Over-temperature shutdown, overcurrent shutdown, undervoltage lockout and short circuit load protection are included.
● Design: Features a 4-Layer 2 oz copper PCB for better heat dissipation and an exposed solder pad for easy driver IC installation.
Limit Switch Endstop:
● Design: Customized high quality connection furnished by 22AWG wire. The internal thick copper wire can handle currents of up to 2A and voltages of up to 300V.
● Durability: The insulating layer can withstand a broad temperature range, peaking at 80 degrees centigrade. This is superior to generic thin copper wires.
Package Contents:
1x Reprap Ramps 1.4 Kit with Mega 2560 r3
1x Heatbed MK2B
1x 12864 LCD Controller
1x DRV8825
1x Mechanical Switch
Several Cables
