Printrboard Rev D

We are instrumental in providing to our valuable customers excellent quality Printrboard REV D which is available with following Features:-
Atmel AT90USB1286 Microcontroller (or AT90USB1287 drop-in compatible for 20mhz support)
-- Native USB interface. No FTDI serial-to-USB chip!
-- 128kb Flash
Four integrated Allegro A4982 Stepper Drivers (no Pololus needed)
On-board 4-channel DAC to control stepper set current (Rev F)
Thermistor Connectivity: 2
2 N-MOSFETs for Extruder and Heatbed control
1 N-MOSFET for low power Fan or motor
Onboard SD card slot
Four Endstop connectors supplied @ 5V. Includes X, Y, Z, and fourth endstop called E-Stop to be used as an emergency stop, or extruder stop (to be added in firmware).
Supports multiple power configurations (Carried from Sanguinololu)
-- Logic & Motors supplied by ATX or laptop power supply (12-20V 120W minimum)
-- Logic supplied by USB bus (if enabled by solder jumper)
-- Logic supplied by on-board voltage regulator
-- on-board USB connectivity
Edge connectors enabling right-angle connections
Dedicated I2C connector (Rev F)
14 Extra pins available for expansion and development, with the following capabilities
-- UART1 (RX and TX)
-- SPI (MOSI, MISO, SCK)
-- PWM pin (1)
-- Analog I/O (6)
-- JTAG (uses some of the ADC pins)
Additional 14 pin header with remaining I/O for prototyping
SMT Components sized at 0805, and no QFNs for easier soldering.