LED- Varying Luminescence from Single Power Source

[Robo222]

How is it possible to create a string of LEDs of varying brightness from one power source? I need to create 4 or 5 different intensities if possible??

 

[Brian218]

The simplest way would be to use resistors of different values.

Using a 555 timer circuit to turn the LEDs on/off at different rates would be another way.

 

[PhillDubya]

And the voltage divider rule will help in deciding which resistors to use:

Vout = R2 / (R1 + R2) * Vin

 

[audioguru]

And the voltage divider rule will help in deciding which resistors to use:

Vout = R2 / (R1 + R2) * Vin

You don't use a voltage divider to drive LEDs. Instead you simply limit the current with a series resistor or with a series regulated current source.