How To Make A Simple Polarity Tester | Best Tool

[@SC.243k]

Fanstastic work 👏👌 thanks my friend👍

[@agussaefulloh8388]

I wonder if I can use any other type of diodes?

[@taphuc-dientu]

Good job

[@robymartini]

Schema?

[@abo.mohammedallame9339]

👍👍👍👍👍