#Arduino pro micro pro#

The most important thing to look for is that it contains an ATmega32U4, though if you want to be sure you’re getting the right thing, the SparkFun board would be a good, though relatively expensive option.

#Arduino pro micro pro#

One thing to watch out for when deciding on a Pro Micro board is that if you don’t know what you’re looking for, you may end up buying the wrong thing, or at least being confused by the various labels that it’s known by.

Another thing to consider is that the Nano does appear to be better supported with accessory boards and breakouts, potentially helpful depending on your project. I/O capabilities of these three boards somewhat mirror their respective sizes, as the Pro Micro features far more options than the Trinket is capable of, and is slightly below the Nano in this respect if you’re not factoring in its HID abilities. 7” (roughly 33 x 18mm), it’s smaller than the Nano, but larger than the Trinket board. Of course, the characteristic feature of this board is its minuscule size. So as not to confuse things, there are a total of 18 I/O pins which can be used for I/O, PWM, RX/TX, and analog functions, as some pins are capable of multiple interface methods. Real-world interface consists of 9 x 10-bit ADC capable pins, along with 12 digital I/Os, five of which are PWM capable. When selecting cables, however, be sure that what you use isn’t a power-only version, a problem I’ve run into before when working with an ESP8266 board. It connects via micro-USB, meaning that unlike the bulky full-sized B socket of the UNO or mini-B of the Nano, the connector that you use to charge your phone could work in a pinch. This HID interface is one of this board’s best features, and means that not only can it interact with the real world using it’s I/O pins, but can also interact with your computer directly as a virtual keyboard/mouse.

Programming-wise, the board is similar to an Arduino Leonardo, with its onboard ATmega32U4 chip providing I/O as well as HID capabilities. While Arduino compatible programming-wise, this board isn’t actually made by Arduino, and can instead be found on SparkFun in both a 3.3V and 5V variants, as well as on auction sites via a quick search. For another tiny option, you might also consider the so-called “Arduino” Pro Micro. I’ve gone over several, including the Arduino Nano, and Adafruit Trinket, both of which are quite small-especially the Trinket. Today, if you need to develop a new project, there are a wide variety of boards from which to choose.