Uno vs Nano vs Micro, User-Friendly

6v6gt: There are also some interesting Nano clones for the price of a small beer. The Robotdyn has USB micro connection and an onboard 800mA volt and 800mA 3.3 volt regulator. It is fully breadboard compatible once you solder on the headers (or pay an extra few cents for the ready soldered version). I'll be getting a few of these for the projects I power from mobile phone travel chargers.

https://www.aliexpress.com/item/Nano-V3-ATmega328-CH340G-Micro-USB-Pin-headers-NOT-soldered-Compatible-for-Arduino-Nano-V3-0/32664577152.html?scm=1007.13339.33317.0&pvid=60a5752c-a3bb-4259-97f1-d25e0f419b3e&tpp=1

For reference, uses the CH340 if that's an issue to anyone.

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The NANO has all the compatibility of the UNO…less the size…
if you google breakout boards for Nano I’m sure you can find one similar to mine for less than 5$.

The breakout is very user friendly as you can see…
Or transfer the nano to a bread board for prototyping.

The biggest advantage is using a microUSB directly for programming…
Make sure you download the CH340 driver as some Chinese knockoffs use a CH340 chip (serial/usb) instead of the official FTDI chip…

Not a big issue…providing you have the drivers to work with the cheaper version of this Nano…

https://drive.google.com/file/d/0Bycq1zPhMoBiUW9SQ1JZdzEzLTZyTVJXdjdtemd0dHBHYTdn/view?usp=sharing