![]() At high level, the LED turns on, at low level, the LED turns off. User LED connected to the 13 pin microcontroller. LED Nameįlash when exchanging data between Arduino Mega 2560 and PC. When connected to a PC, the Arduino Mega 2560 is defined as a virtual COM port. Microcontroller ATmega16U2 provides a connection of microcontroller ATmega2560 with the USB port of the computer. It should be noted that with a power supply voltage of 7-20 volts, the board works perfectly, and with a smaller, for example, 5 volts, there may be situations with the unstable operation. The controller provides 256KB of Flash memory for storing firmware, 8KB of SRAM, and 4KB of non-volatile EEPROM memory for data storage. The heart of the Arduino Mega platform is an 8-bit AVR family microcontroller – ATmega2560 with 16 MHz clock speed. You can get the original Arduino Pro Mini board from different stores.To launch the platform, download and install the Arduino IDE integrated development environment on your computer. RESET: This pin is used to reset the microcontroller.ĭTR (Data Terminal ready): This pin is used to reset the board and enter the bootloader for programming the Arduino pro-mini. When the pin is set to LOW or 0, the LED turns OFF. When this pin is set to HIGH or 1, the LED turns ON. LED: In the board, there is a built-in LED connected to digital pin 13. That’s why it is known as a data line, while SCL is called a clock line. It is defined as the line used by the slave and master to send and receive data. The Serial Clock is initiated by the master device. ![]() It is used to adjust the shift of data between the two devices. It is defined as the line that transmits the clock data. ![]() The I2C uses two lines to send and transmit data: a serial clock pin uses (SCL) and a serial data (SDA) (SDA) pin. It is the two-wire serial communication protocol. These digital pins can be configured as an input or output using the pinMode (), digitalWrite (), and digitalRead () functions. This kind of input/output is usually called digital (or binary) and these states are referred to as HIGH or 1 and LOW or 0. The Arduino digital pins can read/output only two states: when there is a voltage signal and when there is no signal. There are 14 digital I/O pins (0-13) out of which 6 are PWM pins. GND: There are three GND (Ground) pins present on the Arduino Pro Mini board. We can change the voltage supplied voltage to 5V depending on the versions of the board. VCC: It is the regulated voltage of 3.3V. The supplied voltage at this pin can range anywhere between 3.4 to 12V. RAW: RAW is the unregulated input voltage that is supplied to the regulator. This button generates a low-level signal at the pin which is used to reboot the microcontroller. It consists of 32 KB of flash memory for storing the program code (0.5 KB is used for storing the bootloader), 2 Kbytes of SRAM, and 1 Kbytes of EEPROM. The ATmega328 microcontroller is a high-speed, power-efficient AVR 8-bit microcontroller. ![]() EEPROM: 512 bytes Are you a beginner? Can't decide which book to read? Check out this article on Best Arduino Books for beginners Arduino Pro Mini Pinout details: ATmega328 microchip:.Note: Older version of the Pro Mini had the following specs that are different from the latest version: Given below are the technical specs of Arduino Pro Mini: Microcontroller ATmega328(latest version) Operating Voltage 5V and 3.3V Input Voltage 5 – 12 V (5V model) and 3.3 – 12 V(3.3V model) Digital I/O Pins 14 Pins (6 are PWM output pins) Analog Input Pins 6 Pins DC Current per I/O Pin 40 mA Flash Memory 32 kB (0.5 kB is taken by bootloader) SRAM 2 Kbytes EEPROM 1 Kbytes Clock Speed 16 MHz (5V model) and 8 MHz (3.3V model) Arduino Pro Mini Specs Table Image Source: Arduino Website Specifications of Arduino Pro Mini: NOTE: the ground on the left has moved down one pin. Also, it does not come with headers, so you have to solder header pins to the board first. ![]() There is a separate programming header with 6 pins for FTDI connection. So you will need an FTDI adapter to program it. Note B : Arduino Pro mini does not have a USB port. Note A: Older version of the Pro mini has ATmega 168 instead of ATmega 328. There are two different versions of the Arduino Pro Mini: one runs at 3.3V and 8 MHz, and the other one at 5V and 16 MHz. Atmega 328-based Arduino Pro Mini pinout and specifications is given in detail in this post. The board consists of 6 analog inputs, 14 digital input/output pins (of which 6 can be used as PWM outputs), a reset button, an onboard 8Mhz resonator, and holes for mounting pin headers.Ī six-pin programming header can be connected to an FTDI cable or Spark fun breakout board to provide USB power and program the board. The Arduino Pro Mini is a microcontroller board based on the microchip ATmega328. Last updated on May 19th, 2023 at 12:34 pm ![]()
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