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Arduino Pro Mini Atmega328P 3.3v/8MHz Blue (Compatible)

Arduino Pro Mini Atmega328P 3.3v/8MHz Blue (Compatible)

The Arduino Pro Mini is a compact and streamlined version of Arduino. Operating at 3.3V and 8MHz with a built-in bootloader, it offers flexibility for your projects. With no onboard USB or Serial Converter, you have the freedom to customize your connections and achieve cost-effectiveness. Unleash your creativity with this versatile and budget-friendly microcontroller.

Package Includes:

  • 1 x Arduino Pro Mini ATmega328 3.3V 8Mhz Blue (Compatible)

48.30 AED 48.30 AED Tax Included
48.30 AED Tax Included

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Features

  • Microcontroller: ATmega328
  • Operating Voltage: 3.3V
  • Clock Speed: 8 MHz
  • Flash Memory: 32 KB (0.5 KB used by bootloader)
  • SRAM: 2 KB
  • EEPROM: 1 KB
  • Digital I/O Pins: 14 (of which 6 provide PWM output)
  • Analog Input Pins: 8
  • No USB interface – requires external FTDI/USB-to-Serial adapter for programming
  • Low power consumption – great for battery-operated projects
  • Compact size: 18mm x 33mm
 

Applications

  • Wearable electronics
  • IoT devices
  • Battery-powered projects
  • Sensor monitoring systems
  • Embedded systems and compact robotics

Pin Description

  • Digital I/O: D0 to D13 (PWM on D3, D5, D6, D9, D10, D11)
  • Analog Inputs: A0 to A7
  • Power Pins: VCC (3.3V), GND
  • Reset: Active-low reset pin
  • TX/RX: Serial communication pins (D0 for RX, D1 for TX)

Wiring and Programming

To program the Arduino Pro Mini, you need an FTDI USB-to-Serial adapter. Connect the following pins:

  • FTDI VCC (3.3V) → VCC
  • FTDI GND → GND
  • FTDI TX → RXI (D0)
  • FTDI RX → TXO (D1)
  • FTDI DTR → GRN (auto-reset)

In the Arduino IDE:

  • Select Board: “Arduino Pro or Pro Mini”
  • Select Processor: “ATmega328P (3.3V, 8 MHz)”
  • Select the correct COM port and upload code as usual.

Supported Protocols

  • UART (Serial)
  • I2C (Wire library, SDA on A4, SCL on A5)
  • SPI (Pins 10-13)

Example Code

This basic sketch blinks the onboard LED (usually on pin 13):

void setup() {
  pinMode(13, OUTPUT);
}

void loop() {
  digitalWrite(13, HIGH);   // LED ON
  delay(1000);              // Wait 1 second
  digitalWrite(13, LOW);    // LED OFF
  delay(1000);              // Wait 1 second
}

Important Notes

  • This board does not include a built-in USB interface. You need a 3.3V FTDI or USB-to-Serial adapter.
  • Ensure the FTDI adapter matches the board's voltage (3.3V only).
  • Use a regulated power supply if powering through VCC.