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Arduino Leonardo Micro

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The Arduino Leonardo Micro offers the power of a full-sized Leonardo, but in a smaller, more discrete form factor.

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The Arduino Leonardo Micro is the smallest and most compact board in the Arduino Range, but offers all of the power and functionality of a full-sized Leonardo. Similarly, it utilizes a single ATmega32U4 Chip, which has native USB capabilities, making it the ideal choice for users who need the power of a Leonardo but may be constrained by space limitations.

Native USB integration also means that these boards are versatile, and can be utilized to easily connect to and interact with computers – and can even become a new form of peripheral with a unique method of inputs. This is also made easier by the plethora of resources available online. From IDE software and code libraries to open-source programming that other makers like to share, you will find many uses for an Arduino Leonardo Micro in your home, office or simply just for those fun projects that you enjoy in your free time.

This board has the same feature set as a full Arduino Leonardo, with a 16MHz Crystal Oscillator, an ISCP header, a micro USB connector, a power jack and a reset button. The smaller form factor, however, offers the benefits of being more discrete, saving space within tight or space-limited projects, and ultimately being more affordable than many bigger boards that have more Electronics Components.


Arduino Leonardo Micro  -  Technical Specifications:

  • Microcontroller


  • Operating Voltage


  • Input Voltage (Recommended)

7 to 12V

  • Input Voltage (Limits)

6 to 20V

  • Digital I/O Pins


  • PWM Channels


  • Analog Input Channels

– 12

  • DC Current per I/O Pin

– 40mA

  • DC Current for 3.3V Pin

– 50mA

  • Flash Memory

– 32KB (4KB Reserved by Bootloader)

  • SRAM

– 2.5KB


– 1KB

  • Clock Speed

– 16MHz

  • Dimensions

– 48 x 18mm

  • Weight

– 6.5g


Typical Applications for the Arduino Leonardo Micro:

The Leonardo Micro offers the same advantages of a typical Leonardo board, but with a smaller form factor, allowing users to enjoy the same functionality within a more discrete package. Similarly, the native USB communication allows the board to interact with computers or devices as a peripheral, and can utilize sound sensors, Light Sensors, motion detection or even Temperature Sensors as inputs. As you can expect, this opens up new possibilities for ways of interacting with and learning about various systems, and can also monitor specific variables that may not be visible or obvious to users.

Many users who are still learning about the board enjoy experimenting with projects like:

  • Movement-based mice or keyboards that read hand gestures and convert physical movement into usable inputs.
  • Smoke detectors that monitor the opacity of the air.
  • Utilizing Android gyro-sensors to turn a mobile phone into a steering wheel for racing games.
  • Seismic sensors to measure typically unnoticeable shifts or movements in the Earth’s crust.

These boards can also be used in more advanced ways than the examples above, and more experienced users have been able to achieve great results, with projects like:

  • A robot that explores and maps its surroundings autonomously, avoiding objects and navigating moderately complex routes.
  • Connecting a bicycle or exercise machine to a monitor to emulate cycling, running or even rowing through various terrains.
  • Creating parts of a home-automation system – controlled with gestures, sounds or via mobile devices.

While many may think that the age of invention is over, the truth is that it has simply become more digitally entwined. So feel inspired and try your hand at making something brand new. With the Arduino Leonardo Micro at hand, there are so many unique and creative projects you can try – with most of the necessary resources available for free on the net.


*Note: This is not supplied by Arduino, although it is manufactured to the same specs and quality controlled locally to ensure it functions exactly as expected - while saving you money.


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Arduino Leonardo Micro

Arduino Leonardo Micro

When it comes to building unique electronics projects, there are few better ways to do it than with Arduino. Founded with the intent to make electronics prototyping accessible to all, regardless of age, culture, sex or any other factors, Arduino is one of the world’s leading designers and manufacturers of open-source hardware and software.

Some of the leading microcontroller boards that Arduino has produced include the classic Arduino UNO, as well as many variations with different specialisations and specifications. Some of the most popular Arduino boards – which we stock of course – are the Arduino Mega, Leonardo, Due, Micro, Nano, Mini, as well as the unique Arduino LilyPad. And with these boards at hand, as well as a Shield or two, you can craft thousands of different projects, with each one being tailored to your specific needs, wants and personal tastes.