There are many circuit diagrams available online for building an Arduino on a protoboard, but after an extensive research and after some little tweaks, I’ve come up with this tried and tested circuit.

If you want to learn how something works, from a cotton gin to an RBMK reactor, you’re just a few keystrokes away from articles, diagrams ... posted a schematic for wiring everything up if ...

The KiCad freeware schematic capture tool is used to configure an active circuit breadboard. Library cards with Arduino Nano and protoboard function can be added. Sandwizz-breadboard features ...