I'd like to dd a GPS module to this, which is the smallest and best option I hve?

Look into Adafruit GPS modules compatible with the arduino. I know they have shield GPS modules for the uno so you can probably find an unshielded version to use on the micro. Basically go to adafruit.com and take a look. They also helped design the micro so best chance for compatibility.

What are the dimensions (and weight) of the board? Amazon only seems to list the packaging dimensions.

From the Arduino web sitec http://arduino.cc/en/Main/ArduinoBoardMicro "The maximum length and width of the Micro PCB are 4.8cm and 1.77cm respectively, with the USB connector extending beyond the former dimension." Height about 20mm (defined by header pins) Weight 7 g. Also check out the Nano board.

does it have the I2C bus ?

Hi, yes! Here is a tutorial with more info: http://tronixstuff.com/2010/10/20/tutorial-arduino-and-the-i2c-bus/

is this as powerful as the Arduino mega?

Simply, no. But powerful for its small size.

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Micro with Headers A000053 | ATmega32U4 Development Board with USB Connectivity for Robotics, Automation & Embedded Projects with 20 Digital I/O Pins and Native USB Support

Product ID: 96344263

Details

Brand
Arduino
CPU Model
Core i3
Memory Storage Capacity
32 KB
Model Name
A000059
RAM Memory Installed Size
2.5 KB

⚡16 MHz ATmega32U4 MCU

💻Native USB Connectivity

🔌20 Digital I/O Pins

R1320

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Description

🚀 Micro-sized board, mega-sized impact — code your future today!

PLUG PLAY INNOVATION - Seamless USB connection means instant coding and sketch uploads—perfect for pros and beginners alike.
COMPACT BREADBOARD READY - Slim form factor fits effortlessly on breadboards, streamlining your circuit-building workflow.
TRUSTED MAKERS CHOICE - Co-developed by Arduino & Adafruit, backed by a global community and 1-year warranty for reliable innovation.
POWERHOUSE MICROCONTROLLER - 16 MHz ATmega32U4 chip delivers lightning-fast processing for real-time robotics and automation projects.
EXPAND YOUR DIGITAL PLAYGROUND - 20 versatile digital I/O pins empower complex sensor and module integration for next-level prototyping.

The Arduino Micro with Headers (A000053) is a compact, breadboard-friendly development board featuring 20 digital I/O pins and a powerful 16 MHz ATmega32U4 microcontroller. Designed for seamless USB connectivity, it supports rapid prototyping in robotics, automation, and embedded projects. Developed in collaboration with Adafruit, it offers reliable performance, beginner-friendly setup, and access to a vibrant global maker community.

Specifications

ASIN	B00AFY2S56
Best Sellers Rank	#25,165 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #29 in Microcontrollers
Box Contents	Arduino Micro
Brand Name	Arduino
CPU Model	Core i3
Compatible Devices	Keyboard, Mouse, Personal Computer
Country of Origin	Italy
Customer Reviews	4.7 4.7 out of 5 stars (604)
Global Trade Identification Number	07640152111136
Importer Contact Information	Robocraze, Ground Floor, 912/10 Survey no. 104 4th G street, Chelekare, Kalyan Nagar, Bengaluru - 560043
Item Dimensions L x W x H	10.2L x 2.5W x 7.6H Centimeters
Item Type Name	Arduino Micro
Item Weight Unit of Measure	9 Grams
Manufacturer	Arduino, St. James Avenue, Boston, Massachusetts, 02116, USA
Manufacturer Contact Information	St. James Avenue, Boston, Massachusetts, 02116, USA
Manufacturer Part Number	A000059
Memory Storage Capacity	32 KB
Model Name	A000059
Model Number	ARD-A000059
Network Connectivity Technology	USB
Number of Items	1
Number of Packs	1
Operating System	Linux, Windows, Macos
Packer Contact Information	Robocraze 9902340705
Processor Brand	Atmel
Processor Count	1
Processor Speed	16 MHz
RAM Memory Installed	2.5 KB
RAM Memory Technology	SRAM
Total USB Ports	1
UPC	758399181809
Unit Count	1 Count
Warranty Description	1 year Manufacturer
Wireless Compability	Bluetooth

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R1320

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In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

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