If all you're soldering is some pins on an Arduino nano or some simple jlc prototypes then you'll also be totally fine with lead free solder. The only time I've

If all you're soldering is some pins on an Arduino nano or some simple jlc prototypes then you'll also be totally fine with lead free solder. The only time I've seen a reasonable excuse to use leaded solder at home is when working with very temperature sensitive devices such as connectors with plastic in them. Even then leaded isn't /that/ much better.