KeeYees UNO R3 Board uses the same ATmega328 and ATMega16U2 as official Uno R3 and 100% compatible with the official version. It comes with free 1.5m USB cable for convenient connection.
This is the latest version of the expansion board, which can ...
CNC Expansion Board: -GRBL 0.9 compatible -Runs on 12-36V DC -4-Axis support: X, Y, Z -It can drive 4 stepper motors, and each stepper motor only needs 2 IO ports. That is to say, 6 IO ports can manage 3 stepper motors very well, which is very convenient to use.
KeeYees UNO R3 Board: -Microcontroller: ATmega328P -Chip: ATmega16U2 -Operating Voltage: 5V -Input Voltage (recommended):7-12V -Input Voltage (limit):6-20V -Flash Memory: 32 KB of which 0.5 KB used by bootloader -Digital I/O Pins: 14 Digital I/O Pins (6 PWM outputs) -Analog Input Pins: 6 DC Current per I/O Pin 40 mA DC Current for 3.3V Pin 50 mA -SRAM: 2 KB -EEPROM: 1 KB -Clock Speed: 16 MHz Tips: Find more information about Arduino UNO R3 with the Expansion Board IO Port with our tutorial.
DRV8825 Stepper Motor Driver: -Applied for driving stepper motors up to 8.2V-45V 2.5A -4-layer PCB board (better heat dissipation) -6 different step resolutions: full-step, half-step, 1/4-step, 1/8-step, 1/16-step, and 1/32-step
Mechanical Switch Endstop: -Length of Cable: 70 cm -Red line --- VCC (ramps of +) -Black wire --- GND (ramps of -) -Green Line --- SIGNAL (ramps in s)
Package Contents: 1 x CNC Shield Board 1 x KeeYees UNO R3 Board 4 x DRV8825 Stepper Motor Driver with Heat Sink 4 x RAMPS Mechanical Switch Endshop 20 x 2.54mm Black Jumper Caps 1 x 1.5m USB cable for UNO R3 Board