SKU: 67706476149

Arduino Pro 328 - 3.3V-8MHz

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Description

Arduino Pro 328 - 3.3V-8MHzIt'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 (select 'Arduino Duemilanove w 328' within the Arduino software). The power switch was moved to the side of the board (good idea Limor!) to allow control when a shield is attached. This board does not work with the 5V Arduino shields but does work nicely with our prototyping shield. Please note: Arduino 0015

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 (select 'Arduino Duemilanove w/ 328' within the Arduino software). The power switch was moved to the side of the board (good idea Limor!) to allow control when a shield is attached. This board does not work with the 5V Arduino shields but does work nicely with our prototyping shield.

Please note: Arduino 0015 supports the ATmega328 but not yet at 8MHz. Please select 'Arduino Duemilanove w/ 328' within the Arduino software but expect your delays to work twice as long (code will run half as fast as the Duemilanove at 16MHz).

Please note: The right-angle power switch is fragile. We're working on making the switch stronger. For now, please be gentle.

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 Duemilanove. 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 wanted Arduino Pro to be low profile. The DC power jack footprint is available, but not populated. We recommend running the board with a LiPo battery for better portability.

We really wanted to minimize the cost of an Arduino. The Arduino Pro is like the Arduino Duemilanove (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 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.

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

Documents

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SKU: 67706476149

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4.9 ★★★★★
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Andy & Christie
Houston, US
★★★★★ 5
My dogs love them
Size: Large, Style: Peanut Butter
One of the few toys my pit bulls can't break. They absolutely love these toys and play chase with them. Usually, they can break toys in less than 5 minutes, but not these.
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Reviewed in the United States on February 25, 2026
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Jennifer Stellakis
Birmingham, US
★★★★★ 5
Very durable and dont hurt teeth
Size: Large, Style: Peanut Butter
Dogs love - all 3 dogs have been playing with them for last week non stop. One bone is a little small for large dogs which is only reason its 4 stars
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Reviewed in the United States on February 20, 2026
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entity
Waukegan, US
★★★★★ 4
Good quality, not a bad price
Size: Large, Style: Peanut Butter
Good value. It was cheaper to buy the pack of three instead of buying three separate. I wanted to try different shapes for the dogs. Honestly, they aren’t impressed, but it’s not due to a lack of quality of the product. It’s because they would rather shred Kleenex, eat dog poop, and steal chicken eggs.
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Reviewed in the United States on March 18, 2026
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Merbear
Charlottesville, US
★★★★★ 5
My dogs love love love these
Size: Large, Style: Peanut Butter
Repeat buyer here. I have Blue Heelers and Aussies so I have purchased many of the jumbo balls and we have loved them. I decided to gift this set to a friend. The pups ages range from 4 months-11 years and they adore these toys, even sleep with them! If you want to train your dogs to play with toys instead of your belongings, you can't go wrong with this peanut butter trio!
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Reviewed in the United States on November 28, 2025
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Oscar sanchez
New York, US
★★★★★ 1
Cheap
Size: Medium, Style: Beef
My dog destroyed it in 5 minutes.
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Reviewed in the United States on May 22, 2026

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