MEGA2560 R3 Ard Development Board 2012 New Version, ATMEGA16U2-MU
The new version of the 2011 MEGA2560 is the latest version of the MEGA series Arduino controller, with respect to the MEGA1280, the improved points are as follows:
1 the use of ATMEGA2560 microcontroller, storage capacity than the original Atmega1280 twice;
USB turn serial port circuit part and the ATmega8U2 microcontroller and phase compared to the original MEGA1280 used FT232RL, ATmega8U2 in addition to provide traditional USB to serial port function, also can make the user's own programming defines the functions of the other, such as the USB port configured into a mouse, keyboard, joystick, cameras, and so on, of course, these applications remains to be the Arduino team to announce the implementation of specific programs.
Arduino mega2560 a ATmega2560 as the core microcontroller development board itself has a group of 54 digital I / O input / output end (which 14 groups to do the PWM output), 16 groups of simulation compared to the input, 4 groups of UART (hardware serial ports) using 16 MHz crystal oscillator. Because of the bootloader, it can be downloaded directly through the USB without having to go through the other eternal programmer. The power supply can be supplied directly by the USB, or the adapter AC-to-DC and the battery are used as the eternal power supply.
Due to the open source code, and the use of Java concept (cross platform) C language development environment, so that the surrounding modules of Arduino and the application of rapid growth. The main reason for attracting Arduino to use Artist is that it can quickly use Arduino language with Flash or Processing... And other software communications, to make multimedia interactive works. Arduino development IDE interface based on the principle of open source code, you can download the use of free special production, school teaching, motor control, interactive works, etc..
Power Design
There are two options for the Mega2560 Arduino power supply system, USB direct power supply or eternal power supply. The choice of power supply will be automatically switched. Eternal power supply can choose AC-to-DC adapter or battery, the control voltage limits in 6V~12V. But if the supply voltage is less than 6V, I / O port may can not provide to 5V voltage, so there will be unstable; if the voltage is greater than the 12V, voltage stabilizing device will overheat protection is likely to occur, are more likely to damage the Arduino mega2560. So the proposed operation is powered by 6.5~12V, and the recommended power is 7.5V or 9V.
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