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.
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