SKU: 40422114244

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

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Description

SparkFun Pro Micro - 3.3V/8MHz Boards, Sparkfun OriginalsHere at SparkFun, we refuse to leave good enough alone. Thats why were adding to our line up of Arduino compatible microcontrollers once more! The Pro Micro is similar to the Pro Mini except with an ATmega32U4 on board. The USB transceiver inside the 32U4 allows us to add USB connectivity on board and do away with bulky external USB interface. This tiny little board does all of the neat o Arduino tricks that youre familiar with: 4 channels of 10 bit

Here at SparkFun, we refuse to leave ‘good enough’ alone. That’s why we’re adding to our line-up of Arduino-compatible microcontrollers once more! The Pro Micro is similar to the Pro Mini except with an ATmega32U4 on board. The USB transceiver inside the 32U4 allows us to add USB connectivity on-board and do away with bulky external USB interface.

This tiny little board does all of the neat-o Arduino tricks that you’re familiar with: 4 channels of 10-bit ADC, 5 PWM pins, 12 DIOs as well as hardware serial connections Rx and Tx. Running at 8MHz and 3.3V, this board will remind you a lot of your other favorite Arduino-compatible boards but this little guy can go just about anywhere.

This is the 3.3V version so, as always, keep in mind the limits of system voltage and so forth. The lower system voltage also has its advantages, though, like ease of use with many common 3.3V sensors. 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.

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

Note: See the GitHub link below for support with the Arduino IDE.

Dimensions: 1.3x0.7"

Features:

  • ATMega 32U4 running at 3.3V/8MHz
  • Supported under Arduino IDE v1.0.1
  • On-Board micro-USB connector for programming
  • 4 x 10-bit ADC pins
  • 12 x Digital I/Os (5 are PWM capable)
  • Rx and Tx Hardware Serial Connections
  • Our Smallest Arduino-Compatible Board Yet!

Documents:

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SKU: 40422114244

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4.3 ★★★★★
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Michael E. Wascom
Houston, US
★★★★★ 5
It fits and works like it should.
Color: 86mm-for Bmw
It fits and works like it should.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
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Amazon Customer
Bozeman, US
★★★★★ 5
Works perfect 2017 N55 3.0L
Color: 86mm-for Bmw
Perfect fit. Great quality. 2017 bmw x3 35i N55
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Reviewed in the United States on March 26, 2026
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Johnathan
West Palm Beach, US
★★★★★ 5
works great
Color: 86mm-for Bmw
works great, no issues. perfect for 2001 volvo v70
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Reviewed in the United States on April 24, 2026
K
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Kristen Maxwell
Fort Morgan, US
★★★★★ 5
Perfect fit for 2013 BMW X5 35I
Color: 86mm-for Bmw
Perfect fit for 2013 BMW X5 35I
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Reviewed in the United States on May 8, 2026
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Tripp Heather
Whiting, US
★★★★★ 5
BMW n20
Color: 86mm-for Bmw
Did it’s job
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2026

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