Arduino Pro Mini 3.3V 8M ATMEGA328P compatible board:

The Arduino Pro Mini 3.3V 8M ATMEGA328P is a compact and lightweight Arduino board designed for projects that require a small form factor. Here are some key features of this board:

1. Microcontroller: It uses the ATmega328P microcontroller, the same chip found on the popular Arduino Uno.
2. Operating Voltage: The board operates at 3.3V, making it suitable for projects that require lower power consumption or when interfacing with 3.3V components.
3. Clock Speed: The ATmega328P runs at 8 MHz, providing a balance between processing power and energy efficiency.
4. Flash Memory: It has 32KB of flash memory, of which 2KB is used by the bootloader.
5. Digital I/O Pins: The Pro Mini 3.3V has 14 digital input/output pins, 6 analog inputs, and supports PWM on 6 of its pins.
6. Size: It comes in a compact form factor, making it suitable for projects with space constraints. The board does not have a built-in USB-to-Serial converter, so an external FTDI breakout board is typically used for programming.
7. Power Consumption: With its lower operating voltage and reduced clock speed compared to a standard Arduino Uno, the Pro Mini 3.3V can be more power-efficient, making it suitable for battery-powered projects.
8. Programming: To program the Pro Mini, you need a separate USB-to-Serial adapter (like FTDI) since the board itself doesn't have a USB connector. The Arduino IDE is commonly used for programming.
9. Compatibility: It is compatible with the Arduino development environment, allowing you to use existing Arduino libraries and code.