Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
We don't know.is it safe if i'm not use D1?
Very late information. It really matters if the load is 3V/20mA (60mW) or 12V/3A (36.000mW).LED and resistor in the circuit is imagery.
Actually i have about 12V 3A in load.