Arduino Pro Mini 328 – 5V/16MHz


Arduino Pro Mini 328 – 5V/16MHz


SKU: MCR-017 - Mfg Part Number: DEV-11113


It’s blue! It’s thin! It’s the Arduino Pro Mini! SparkFun’s minimal design approach to Arduino. This is a 5V Arduino running the 16MHz bootloader. Arduino Pro Mini does not come with connectors populated so that you can solder in any connector or wire with any orientation you need. We recommend first time Arduino users start with the an Uno or a SparkFun Redboard / Adafruit Metro. It’s a great board that will get you up and running quickly. The Arduino Pro series is meant for users that understand the limitations of system voltage (5V), lack of connectors, and USB off board.

SparkFun really wanted to minimize the cost of an Arduino. In order to accomplish this they used all SMD components, made it two layer, etc. This board connects directly to the Adafruit FTDI Friend and supports auto-reset. The Arduino Pro Mini also works with our FTDI cable but the FTDI cable does not bring out the DTR pin so the auto-reset feature will not work. There is a voltage regulator on board so it can accept voltage up to 12VDC. If you’re supplying unregulated power to the board, be sure to connect to the “RAW” pin and not VCC.

The latest and greatest version of this board breaks out the ADC6 and ADC7 pins as well as adds footprints for optional I2C pull-up resistors! We also took the opportunity to slap it with the OSHW logo. It does not include any headers so best pick up a few if you are planning to use this with a solderless breadboard!

Please Note: A portion of this sale is given back to Arduino LLC to help fund continued development of new tools and new IDE features.


  • ATmega328 running at 16MHz
  • USB connection off board
  • 5V regulator
  • Over current protected
  • DC input 5V up to 12V
  • Analog Pins: 8
  • 0.8mm Thin PCB
  • Supports auto-reset
  • Max 150mA output
  • Weighs less than 2 grams!
  • On board Power and Status LEDs
  • Digital I/Os: 14


Recommended Accessories

Adafruit FTDI Friend v1.1
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