Pro Mini is a version of Mega 2560. Built on the ATMega2560 microcontroller. The board has a compact size of 38x52mm. It is a good solution, to make your final project on solder proto-board. Board for functionality similar to the Arduino Mega 2560. It is an embedded MINI board, but with the same stability, and uses the original chips ATMega2560 (16 MHz). The board doesn't have a USB interface. For connecting to the PC, pls use the USB-TTL converter.

Package Includes:

• 1 x RobotDYN Mega Pro Mini

Features:

•  Microcontroller AVR AT2560 (8bit)

• Power Supply 7-9V 

• Digital I/O Pins 54

• Analog I/O Pins 16

• Total Digital I/O 70 (Digital + Analog)

• Clock Speed 16 MHz 

• Flash Memory 128 KB

• SRAM 8 KB

• No USB or onboard programmer.

• ICSP (programming), SPI, I2C and USART

• Timer 2 (8bit) + 4 (16bit) = 6 timer

• PWM 12 (2-16 bit)ADC 16 (10 bit)

• USART 4Pin

• Change Interrupt 24

Description:

The Arduino UNO only has 20 pins total, including the analog connectors, which is occasionally insufficient for applications that require too many pins, making the RobotDYN Mega Pro Mini the best option for large projects with numerous connections. There are 70 IO pins on the RobotDYN Mega Pro Mini that are functional right out of the box. The built-in I/O supports USART and other protocols with 54 digital and 16 analog channels. A 16 Mhz crystal clock, an interrupt for the controller wakeup function, an advanced timer, an analog comparator, and other features let it operate fast and efficiently. SPI, I2C, and USART can be used to connect the RobotDYN Mega Pro Mini to other electronics.

Principle of Work:

Arduino is Free hardware, anything whose blueprints and specs are available for anybody to copy. This means that Arduino provides the framework so that any other individual or business can design their own boards, each of which can be unique yet function well when built upon the same framework. Free software is a computer program whose source code is available to anybody, allowing them to use and alter it as they see fit. In order to allow anyone to create apps for Arduino boards and provide them with a variety of utilities, Arduino provides the Arduino IDE (Integrated Development Environment) platform. which you can use to program and upload your code (sketch) and do this using an External Serial Converter with the help of an embedded bootloader, the Arduino uses libraries that can be downloaded online and gives you the ability to program a significant number of sensor and module without even knowing how they really work.

Pinout of the Module:

 

 

Digital I/O

Arduino Mega Pro Mini has 54 digital input/output pins (of which 15 can be used as PWM outputs). These pins can be configured as digital input pins to read the logic value (0 or 1). Or used as a digital output pin to drive different modules like LED, relay, etc.

Using pinMode(), digitalWrite(), and digitalRead() functions.

GND

Ground pins

AREF

The reference voltage (0-5V) for analog inputs. Used with analogReference(). Configures the reference voltage used for analog input (i.e. the value used as the top of the input range).

SDA

IIC communication pin

SCL

IIC communication pin

ICSP (In-Circuit Serial Programming) Header

the AVR, an Arduino micro-program header consisting of MOSI, MISO, SCK, RESET, VCC, and GND. Connected to the ATMega Pro Mini16U2-MU. When connecting to the PC, program the firmware to ATMega Pro Mini16U2-MU.

No USB Connection

The board doesn't have a USB interface. For connecting to the PC, pls use the USB-TTL converter.

D13 LED

There is a built-in LED driven by digital pin 13. When the pin is HIGH value, the LED is on, when the pin is LOW, it's off.

ATMega Pro Mini 16U2-MU

USB to the serial chip can convert the USB signal into the serial port signal.

TX LED

Onboard you can find the label: TX (transmit)

When the Arduino board communicates via the serial port and sends the message, TX led flashes.

RX LED

Onboard you can find the label: RX(receive )

When the Arduino board communicates via the serial port and receives the message, RX led flashes.

Crystal Oscillator

How does Arduino calculate time? by using a crystal oscillator.

The number printed on the top of the Arduino crystal is 16.000H9H. It tells us that the frequency is 16,000,000 Hertz or 16MHz.

Voltage Regulator

To control the voltage provided to the Arduino board, as well as to stabilize the DC voltage used by the processor and other components.

Convert an external input DC7-9V voltage into DC 5V, then switch DC 5V to the processor and other components.

 

IOREF

This pin on the board provides the voltage reference with which the microcontroller operates. A properly configured shield can read the IOREF pin voltage and select the appropriate power source or enable voltage translators on the outputs for working with the 5V or 3.3V.

RESET Header

Connect an external button to reset the board. The function is the same as a reset button.

Power Pin 3V3

A 3.3-volt supply is generated by the onboard regulator. The maximum current draw is 50 mA.

Power Pin 5V

Provides 5V output voltage

Vin

You can supply an external power input DC7-9V through this pin to the Arduino board.

Analog Pins

The Onboard has 16 analog inputs, labeled A0 to A15.

RESET Button

You can reset your Arduino board, for example, start the program from the initial status. You can use the RESET button.

ICSP (In-Circuit Serial Programming) Header

the AVR, an Arduino micro-program header consisting of MOSI, MISO, SCK, RESET, VCC, and GND.

It is often called the SPI (serial peripheral interface) and can be considered an "extension" of the output. In fact, slave the output devices to the SPI bus host.

When connecting to the PC, program the firmware to ATMega Pro Mini2560-16AU.

 

Power LED Indicator

Powering the Arduino, LED on means that your circuit board is correctly powered on. If LED is off, the connection is wrong.

 

Applications:

• Weighing Machines.
• Traffic Light Count Down Timer.
• Parking Lot Counter.
• Embedded systems.
• Home Automation.
• Industrial Automation.
• Medical Instrument.
• Emergency Light for Railways.

Circuit:

We will not need any circuit, in this testing code, we will rely on the built-in LED on the 13th pin.

Connecting with Arduino First Time

1. Open Arduino IDE

If you haven’t done so already, download Arduino IDE from the software page. 

• Arduino IDE Download

2. Connect the board to your computer

The board doesn't have USB interface. For connecting to the PC, pls use the USB-TTL converter.

 

3. Select Board

Next, you need to tell Arduino IDE which board your sketch is for.

Click on Tools in the menu bar and find the Board row. If a board is currently selected it will be displayed here.

The tools menu with the Board row is highlighted.

Hover over the Board row to reveal the installed board packages. These packages contain some popular boards.

Click on a board to select it.

Selecting a board in Arduino IDE.

4. Select port

Click on Tools in the menu bar and find the Port row. If a board is currently selected it will be displayed here.

The tools menu with the Port row highlighted.

Hover over the Port to reveal all ports. For Arduino devices, the board name will typically be displayed after the port.

Port naming varies by system:

Windows: COM3 (Arduino Mega Pro Mini )

macOS: /dev/cu.usbmodem14101 (Arduino Mega Pro Mini )

Linux: /dev/ttyACM0 (Arduino Mega Pro Mini )

Click on a port to select it. If the port with your board is already selected you don’t have to do anything. If you don’t see your board in the list, see If your board does not appear in the port menu.

Selecting a port in Arduino IDE.

Troubleshooting: If you don’t see your board in the list, see If your board does not appear in the port menu.

5. Upload a sketch

Write a sketch, or use an Example such as Blink (File > Examples > 01. Basics > Blink).

Optional: Click the Verify button to try compiling the sketch and check for errors.

Click the Upload button to program the board with the sketch.

Your sketch will start running on the board. It will run again each time the board is reset.

Code:

void setup() {
pinMode(13,1);
}
void loop() {
digitalWrite(13,1);

delay(1000);
digitalWrite(13,0);
delay(1000); }

Technical Details:

• Microcontroller: ATMega Pro Mini 2560
• Microcontroller Clock Speed 16MHz
• Operating Voltage +5V
• Input Voltage(recommended) +7～+9V
• Output Voltage +5V, +3.3V
• Digital I/O Pins 54
• PWM Digital I/O Pins 15
• Analog Input Pins 16
• Analog Output Pins
• Rated Current per Pin 20mA/Pin
• Dimensions: ~ 38x52mm

 

Resources:

• Arduino IDE Download
• Tutorial

Comparisons:

Both the Mega Pro Mini and Uno have a clock speed of 16MHz, however, they have different amounts of memory and storage. Uno has 32kB of flash memory, while Mega Pro Mini has 256kB. Mega Pro Mini is preferred if the code is large due to the RAM. Arduino Boards make use of SRAM. Mega Pro Mini has 8kB of SRAM space in the system, compared to Uno's 2kB. The Mega Pro Mini has a total of 54 digital pins and 16 analog pins. On Uno, there are only 14 digital pins and 6 analog pins. In Mega Pro Mini, PWM is present on 15 digital pins as opposed to 6 in Uno. Every one of them includes a through-hole pin header for inserting DuPont wires into the Board. so if you have a project that needs a flash space and a high number of pins Mega Pro Mini is your choice. and this version of Arduino Mega is just so small at 38x52 in comparison to regular mega with ~ 50 x 100mm but doesn't forget this board has no programmer so this is a little bit harder for beginner so if you are a beginner we are recommending the normal mega to