Arduino Pro Mini 328 - 3.3V/8MHz

The Arduino Pro Mini 328 - 3.3V/8MHz is a sleek, blue, thin design by SparkFun, focusing on minimalism without compromising functionality. This 3.3V Arduino operates with an 8MHz bootloader. It doesn't come with pre-populated connectors, giving you the flexibility to solder in any connector or wire in any orientation. This is a product designed for those who are familiar with the limitations of system voltage (3.3V), the absence of connectors, and off-board USB.

The Arduino Pro Mini is a cost-effective solution, achieved by using all SMD components and a two-layer design. It connects directly to the FTDI Basic Breakout board and supports auto-reset. You can also use it with the FTDI cable, but keep in mind that the DTR pin is not brought out, so the auto-reset feature won't work. The board has a voltage regulator, allowing it to accept voltage up to 12VDC. If you're supplying unregulated power to the board, always connect to the "RAW" pin, not VCC.

The latest iteration of this board offers ADC6 and ADC7 pins, as well as footprints for optional I2C pull-up resistors! It proudly carries the Open Source Hardware (OSHW) logo, in recognition of SparkFun's commitment to the open-source community.

Looking for the right Arduino? Check out SparkFun's comprehensive Arduino buying guide. Note that a part of the proceeds from this sale goes back to Arduino LLC to support the development of new tools and IDE features.

Product Features:

• 8MHz ATmega328 with external resonator (0.5% tolerance)
• Low-voltage board compatible with popular 3.3V devices and modules (GPS, accelerometers, sensors, etc.)
• 0.8mm thin PCB
• Off-board USB connection
• Lightweight at less than 2 grams
• Supports auto-reset
• 3.3V regulator
• Maximum output of 150mA
• Over-current protection
• DC input ranges from 3.3V to 12V
• On-board Power and Status LEDs
• 8 Analog Pins
• 14 Digital I/Os
• Dimensions: 18 x 33mm

Supporting Documents:

• Schematic
• Eagle Files
• Getting Started Tutorial
• Graphical Datasheet
• GitHub