![]() ![]() Surprisingly, the Micro has the 2 nd most pins out of the three, having 20 Digital I/O pins (with 7 of them having PWM) and 12 Input Analog pins. The board with the most pins is the Mega 2560, which comes in with a whopping 54 Digital I/O pins (were 15 of them have PWM) and has 16 Input Analog pins. To get connected to your computer and start coding, both the Uno and the Mega 2560 can easily connect with a Standard A/B USB cable, while the Micro will need a Micro-USB cable.Įach of these Arduinos have a different number of I/O pins. The pricing for Micro is usually around $19-25 (can be hard to find stock) while the Uno runs around $20-23, and the Mega 2560 comes in at $36 - $39. Arduino Uno dimensions of 2.7” x 2.1” fall somewhere in between the Micro and the Mega 2560. On the opposite side of the spectrum, the Arduino Mega 2560 board dimensions are about 4” x 2.1”, making it about 6x bigger than the Micro in terms of area size. Vin: It is defined as the input voltage, which is applied to the Arduino Board when it is using an external power source.The Micro comes in, being true to its name, at 0.7” x 1.9” making it one of the smallest microcontroller boards out there.RX and TX: The successful flow of data is represented by the lighting of the TX and RX LED. ![]() 3V3: The 3V3 pin works as the output regulated voltage of 3.3V. ![]()
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