Best version of the Arduino Uno
I have used a few Arduino Uno clones, they all do the job well, but some have some extras that may or may not be useful. This particular version has a few features that I prefer, specifically a) the extra footprints for the headers that are on a 0.1" grid, meaning one can use standard protoboard/stripboard for making "shields"/addons (the original Uno has a mistake where the headers are offset from the standard grid). And b) the ability to run the MCU at either 5 or 3.3V. Sure, the original has a 3.3V regulator for powering 3.3V devices - but the original only has IO voltage of 5V, this version can select between 5V/3.3V for both power and IO meaning you don't need any level shifters for non 5V tolerant stuff. c) It uses a micro B USB socket - like most other devices now. Sure its not USB C but that sitll isn't that common. All on all, well worth it.
