When this pin is set 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. I2C pins on Arduino Pro Mini Pin diagram: This allows us to have several SPI peripheral devices sharing the common MISO, MOSI, and CLK lines. When it’s value HIGH, it ignores the master command. When a device’s SS pin value is set to LOW, it can communicate with the master. This line is used for transmitting data to the peripheral devices. MOSI-It stands for Master Output/ Slave Input.This data line in the MISO pin is used to send the data to the master. MISO-It stands for Master Input/ Slave Output.These are the clock pulses, that are used to adjust the transfer of data. There are three common lines to all the peripheral devices: These pins are used by the board to communicate with one or more peripheral devices quickly. It stands for Serial Peripheral Interface. SPI Pins on Arduino Pro Mini Pin diagram: These pins can be used to trigger an interrupt on a low value, a rising or falling edge, or a change in value. These pins are connected to the TX-0 and RX-1 pins of the six-pin block of the board. The pins are used to receive (RX) and send (TX) TTL (Transistor-Transistor Logic) data. These pins are used for serial communication. These are placed in a tight spot to achieve a small form factor. Note: Analog pins A4 and A5 are behind the Analog pins A2 and A3. Each of these analog pins has an inbuilt ADC of resolution of 2 10 bits (so it will give 1024 values). The function of Analog pins is to read the value of the analog/digital input used in the connection. You can connect up to 8 analog/digital sensors to the board. Arduino pro Mini Pinout – Analog Pins :Īrduino UNO has 6 analog pins, whereas Mini has eight analog pins numbered from A0 to A7. Either pin provides 8-bit PWM with analogWrite (). We can generate the PWM signal using the analogWrite() function. Every one of these digital pins can generate a Pulse Width Modulation signal of 2 3 -bit resolution. There are six pins from the set of digital pins that are PWM (Pulse Width Modulation) pins, numbered as 3, 5, 6, 9, 10, and 11. These digital pins can be configured as an input or output using the pinMode (), digitalWrite (), and digitalRead () functions.ĭigital, PWM, and Analog pins Arduino pro Mini Pinout – PWM pins : 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. 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 input voltage that runs into 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. Arduino Pro Mini Pinout details: ATmega328 microchip: NOTE: the ground on the left has moved down one pin. Arduino Pro Mini Pinout image:Īrduino Pro Mini pinout Arduino Pro Mini Pin diagram layout (official): 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 are given in detail in this post. A 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 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. The Arduino Pro Mini is a microcontroller board based on the microchip ATmega328. Arduino Pro Mini Pin diagram layout (official):.
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