led indicator circuit?

I would ask about led indicator circuit that works at 4v at high 3.7 medium and 3.5 low , I would the schematic and PCB design
Thanks

randofo3 months ago

The Electronics Class seems like a great place for you to begin learning about electronics! Once you figure out how LEDs work, you can then very easily design a circuit board for them.

https://www.instructables.com/class/Electronics-Class/