Recommended · for beginners
Arduino USB-to-Serial Tutorial - Programming the Pro Mini
Why people recommend it
A comparison of three USB to serial adapters that people point to when programming a Pro Mini or bare clone board without onboard USB.
Watch for: adapters without a DTR pin need a manual reset
In their words
For the USB-to-TTL, there are many options in the market, watch this video to explain what are they different.
Allen Chak on arduino.stackexchange.com, Oct 2017. CC BY-SA.
There's a video explaining how to wire them up right here:
beersnob on electronics.stackexchange.com, May 2014. CC BY-SA.
