UltiMachine
Arduino MEGA 2560 R3
The new Arduino Mega 2560 R3 is a microcontroller board which is an upgrade from the Arduino Mega. It makes a great controller board for RepRap.
The Arduino Mega 2560 R3 is a microcontroller board based on the ATmega2560. It has 54 digital input/output pins (of which 14 can be used as PWM outputs), 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started. The Mega is compatible with most shields designed for the Arduino Duemilanove or Diecimila.
This board offers several great functions such as:
|
Microcontroller |
ATmega2560 |
|
Operating Voltage |
5V |
|
Input Voltage (recommended) |
7-12V |
|
Input Voltage (limits) |
6-20V |
|
Digital I/O Pins |
54 (of which 14 provide PWM output) |
|
Analog Input Pins |
16 |
|
DC Current per I/O Pin |
40 mA |
|
DC Current for 3.3V Pin |
50 mA |
|
Flash Memory |
256 KB of which 8 KB used by bootloader |
|
SRAM |
8 KB |
|
EEPROM |
4 KB |
|
Clock Speed |
16 MHz |
Additional features coming with this R3 version are:
ATmega16U2 instead 8U2 as USB-to-Serial converter.
1.0 pinout: added SDA and SCL pins for TWI communication placed near to the AREF pin and two other new pins placed near to the RESET pin, the IOREF that allow the shields to adapt to the voltage provided from the board and the second one is a not connected pin, that is reserved for future purposes.
stronger RESET circuit.
More information at the Arduino page here.
