SKU: 39266488301

SparkFun Arduino Pro 328 - 3.3V/8MHz Boards, Sparkfun Originals

Sale price$1113.75 Regular price$1237.50
Save 10%

Pay in installments of $309.38 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 21 - Jul 26

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

SparkFun Arduino Pro 328 - 3.3V/8MHz Boards, Sparkfun OriginalsIts blue! Its skinny! Its the Arduino Pro! SparkFuns minimal design approach to Arduino. This is a 3. 3V Arduino running the 8MHz bootloader. Because the system voltage for this board is lower than other Arduino development boards, it may not be compatible with many Arduino shields which were designed to run at 5V. The Arduino Pro 3. 3V still works great with our prototyping shield so you can create your own 3. 3V shields. The lower system voltage

It’s blue! It’s skinny! It’s the Arduino Pro! SparkFun’s minimal design approach to Arduino. This is a 3.3V Arduino running the 8MHz bootloader. Because the system voltage for this board is lower than other Arduino development boards, it may not be compatible with many Arduino shields which were designed to run at 5V. The Arduino Pro 3.3V still works great with our prototyping shield so you can create your own 3.3V shields. The lower system voltage also has its advantages, like ease of use with many common 3.3V sensors.

Arduino Pro 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.

To keep things affordable and low profile, we’ve chosen to make the DC power jack footprint available, but not to populate it. We recommend running the board with a LiPo battery for better portability. Also, to keep the cost low, we made changes like using all SMD components and switching to a two layer PCB.

This board connects directly to the FTDI Basic Breakout board and supports auto-reset. The Arduino Pro 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. In this latest version of the Arduino Pro we’ve also moved the FTDI headers back just a skoach so that the pins don’t hang over the edge of the board. We’ve also populated it with a sturdier power selection switch.

Not sure which Arduino or Arduino-compatible board is right for you? Check out our Arduino Buying Guide!

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

Features:

  • ATmega328 running at 8MHz external resonator
  • Low-voltage board needs no interfacing circuitry to popular 3.3V devices and modules (GPS, Accelerometers, sensors, etc)
  • USB connection off board
  • 3.3V regulator
  • Max 150mA output
  • Over current protected
  • Reverse polarity protected
  • DC input 3.3V up to 12V
  • Resettable fuse prevents damage to board in case of short
  • Power select switch acts as on/off switch

Dimensions: 2.1x2.05" (53.34x52.08mm)

Documents:

Replaces:DEV-09221

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 39266488301

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.9 ★★★★★
Based on 14 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
C
Verified Purchase
Carol G.
Cuba, US
★★★★★ 5
Vertical good
Size: 2 Pack Pocket Size
Moisturizing
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
K
Verified Purchase
Kat in AZ
Carnegie, US
★★★★★ 4
Works as expected.
Size: 2 Pack Pocket Size
Does what it should. Doesn't last as long as I had hoped, though.At least it doesn't taste bad.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 6, 2026
K
Verified Purchase
Krazie
Boise, US
★★★★★ 3
Not to good
Size: 2 Pack Pocket Size
It doesn’t work well. It didn’t for me.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 1, 2026
G
Verified Purchase
Graham
New York, US
★★★★★ 5
Olabs dry mouth spray
Size: 2 Pack Pocket Size
I have very dry mouth. These sprays are compact and can carry in your purse or pocket easily. Very effective
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
B
Verified Purchase
BabsB
Natrona Heights, US
★★★★★ 5
Very handy and does the trick
Size: 2 Pack Pocket Size
These are pocket size and just a few squirts and your mouth is moist and refreshed. Not too heavy on the mint flavoring which is a good thing
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 4, 2026

recommand products