How to Choose the Right Arduino Board for Your Project .
What should you consider?
cost,performance, online support, size those are the main features
Arduino Uno,Arduino Mega,Arduino promini,Arduino pro micro ,Arduino Nano, Arduino mega mini
Arduino Uno:If you are a beginner trying to get into the world of Arduino, the best option for you would be the Arduino Uno R3
Arduino Mini: If you are looking to get a cheaper intro into the field, or if you need your product in a smaller size, then you may go for the Arduino mini.
Arduino Mega: If your Arduino project has a lot of wires running all around, which requires more than 20 pins, you can opt for an Arduino mega.