Arduino Mega 2560 Development Board

Arduino Mega2560 R3 is a microcontroller development board with ATmega2560 as the core. It has 54 sets of digital I/O input/output terminals (14 of which can be used as PWM output), 16 sets of analog input terminals, and 4 sets of UARTs ( hardware serial ports), using a 16 MHz crystal oscillator. Because of the bootloader, the program can be downloaded directly through USB without going through other external programmers. The power supply part can choose to provide power directly from USB, or use AC-to-DC adapter and battery as external power supply.

Due to the open source code and the C language development environment using the Java concept (cross-platform), the peripheral modules and applications of Arduino have grown rapidly. The main reason that attracts Artists to use Arduino is that they can quickly use the Arduino language to communicate with software such as Flash or Processing to create multimedia interactive works. The Arduino development IDE interface is based on the principle of open source code, which allows you to download and use it for free in thematic production, school teaching, motor control, interactive works, etc.

power supply design

There are two options for the power supply system of Arduino Mega, USB direct power supply or external power supply. The choice of power supply will switch automatically. You can choose AC-to-DC adapter or battery for external power supply. The limit voltage range of this control board is 6V~12V, but if the voltage provided is less than 6V, the I/O port may not be able to provide a voltage of 5V, so there will be problems. Stable; if the voltage provided is greater than 12V, the voltage regulator may be overheated and may damage the Arduino MEGA. Therefore, the recommended operating power supply is 6.5~12V, and the recommended power supply is 7.5V or 9V.

Specification:

• Microcontroller: ATmega2560
• Working voltage: 5V
• Input voltage (recommended): 7-12V
• Input voltage (limited): 6-20V
• Digital I/O ports: 54 (14 PWM output ports)
• Analog input ports: 16
• DC current I/O port: 20mA
• DC current 3.3V port: 50mA
• Flash memory: 256KB (8KB for bootloader)
• SRAM: 8KB
• EEPROM: 4KB
• Frequency: 16MHz

MEGA 2560 R3 Development Edition – (CH340 chip)

This version is an optimization of the original version. It is mainly designed under the condition of high product quality and function requirements. It not only guarantees complete consistency and compatibility with the original version, but also facilitates everyone's use.

advantage:

1 Completely solve the incompatibility and instability of the traditional 2560 board on win7 and win8 systems.

2. While keeping the main control chip ATMEGA2560-16AU unchanged, the usb chip 16u2 is replaced. The Arduino project team has its own ideas for launching products using ATMEGA8U2 and ATMEGA16U2 versions. In most applications, these USB The interface chip is only used for serial port "flashing" and communication. Using a professional usb chip can not only reduce the cost, but also satisfy the application well.

Instructions:

1. Download the development environment Arduino IDE download page

2. Download the CH340 USB chip driver download page

3. Plug in the 2560 development board, the driver will be installed automatically, and check the COM port of the 2560 development board in the device manager

4. Select the baseboard MEGA2560 in the ide

5. Select the COM port

6. You can choose first, the routine program that comes with Arduino, such as LED Blink, press Upload to test

Introduction to Arduino Mega 2560 R3

Arduino Mega 2560 is a microcontroller development board with ATmega2560 as the core. It is an enhanced version of the Arduino Uno R3 system. It has 54 sets of Digital I/O PINs (14 of which can be used for PWM output), and 16 sets of Analog I/O PIN, 4 sets of UART (Hardware Serial Ports), using 16 MHz Crystal Oscillator. Programs can be downloaded directly via USB without going through other external programmers. The power supply part can choose to provide power directly from USB, or use AC-DC transformer or battery as external power supply.

Since Arduino is an Open Source project, and the C language development environment using the concept of Java, the peripheral modules and applications of Arduino have grown rapidly. Developers can use the Arduino IDE to quickly create various multimedia interactive works.

The IDE interface of the Arduino development environment is based on the principle of open source code, which allows you to download it for free and use it in thematic production, school teaching, motor control, interactive works, etc.

Special feature:

1. Using the ATMEGA16U2 chip, the ISP FLASH capacity is doubled, which is convenient for more powerful function expansion and development needs. In addition to providing the traditional USB-to-serial function, ATMEGA16U2 also allows users to program and define other functions, such as configuring the USB port as a mouse, keyboard, game joystick, camera, etc. Of course, these applications are yet to be developed by the Arduino team. Announce specific implementation plans.
2. The external interface increases SDA, SCL.
3. The IO REF interface can provide a voltage reference to the Shield. And for the compatibility of future series products, consider reserving a port on the left side of IOREF.

Power supply design:

There are two options for the power supply system of Mega 2560, USB direct power supply or external power supply. The choice of power supply will switch automatically. The external power supply can choose AC-to-DC transformer or battery. The limit voltage range of this control board is 6V – 12V, but if the voltage provided is less than 6V, the I/O port may not be able to provide a voltage of 5V, so there will be problems. Stable; if the voltage provided is greater than 12V, the voltage regulator may be overheated and may damage the Arduino MEGA. Therefore, the recommended operating power supply is 6.5~12V, and the recommended power supply is 7.5V or 9V.

Specification:

• Main control chip: ATmega2560
• USB chip: ATMEGA16U2
• Working voltage: 5V (USB cable power supply)
• External power supply: 7-12V, recommend 9V
• Digital input and output ports: 54, 15 of which support pwm
• Analog input and output ports: 16
• Output current of each I/O port: 40mA
• 3.3V pin output current: 50mA
• Flash memory space: 256KB (of which 8KB is used for loading programs)
• SRAM: 8KB
• EEPROM: 4KB
• Clock frequency: 16MHZ