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It's blue! It's thin (0.8mm / 2.8mm with components)! It's the Arduino
Pro Mini! SparkFun's minimal design approach to Arduino. This is a 5V
Arduino running the 16MHz bootloader (select 'Arduino Duemilanove w/
328' within the Arduino software). 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 Uno R3. 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 (3.3V), lack of
connectors, and USB off board.

We really wanted to minimize the cost of an Arduino. The Arduino Pro
Mini is like the Arduino Mini (same pin out) but to keep the cost low,
we used all SMD components, made it two layer, etc. This board
connects directly to the FTDI Basic Breakout board and supports
auto-reset. The Arduino Pro Mini also works with the 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 on 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.

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 8MHz with external resonator (0.5% tolerance)
* USB connection off board
* Supports auto-reset
* 3.3V regulator
* Max 150mA output
* Over current protected
* Reverse polarity protected
* DC input 5V up to 12V
* On board Power and Status LEDs


* 0.7x1.3" (18x33mm)
* Less than 2 grams


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General information

Manufacturer SparkFun
Product type Electronics modules
Item number5998733
Manufacturer no.DEV-11114

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Returns and warranty

Warranty 24 month Bring-in
30-day right of return

30-day right of return

This product may be returned within 30 days after shipment or collection. A minimum of 10% will be deducted from opened products. Unfortunately, we cannot accept a product if it is damaged, incomplete or missing its original packaging.

Returns and warranty

Please use our simplified returns and warranty process to return a product or register a warranty case. Returns and warranty

Please use our simplified warranty process to view the warranty period as well as any warranty extensions you may have purchased. This will ensure that your return or warranty case is processed quickly and effectively.


Mail delivery

 Expected delivery time: approx. 8–10 days
Currently > 5 piece(s) in stock at the supplier


All locations

 Expected delivery time: approx. 8–10 days
Currently > 5 piece(s) in stock at the supplier

If ordered immediately.
Information subject to change.

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SparkFun Arduino Pro Mini 328 3.3V/8Mhz SparkFun Arduino Pro Mini 328 3.3V/8Mhz