The Arduino Micro is a microcontroller board based on the ATmega32u4 (datasheet), developed in conjunction with Adafuit. It has 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a micro USB connection, an ICSP header and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a micro USB cable to get started. It has a form factor that enables it to be easily placed on a breadboard.
The Micro is similar to the Arduino Leonardo in that the ATmega32u4 has built-in USB communication, eliminating the need for a secondary processor. This allows the Micro to appear to a connected computer as a mouse and keyboard, in addition to a virtual (CDC) serial / COM port. It also has other implications for the behavior of the board; these are detailed on the getting started page.
|Input Voltage (recommended)||7-12V|
|Input Voltage (limits)||6-20V|
|Digital I/O Pins||20|
|Analog Input Channels||12|
|DC Current per I/O Pin||40 mA|
|DC Current for 3.3V Pin||50 mA|
|Flash Memory||32 KB (ATmega32u4) of which 4 KB used by bootloader|
|SRAM||2.5 KB (ATmega32u4)|
|EEPROM||1 KB (ATmega32u4)|
|Clock Speed||16 MHz|
If you want to give a closer look to this board we advise you to visit the official Arduino Micro page in the Products Section.
Posted by Stephen Hobdell on 30th Jan 2014
For a first arduino, it's simple to program and fun to get on with.
It fits nicely on a breadboard, and has onboard LEDs to test.
The only downside I can see is that the USB driver is in software, which means that you have to wait a while (or after upload) before you can monitor the USB port for serial output. Otherwise, I'm very happy with this tiny marvel!