Analog Fading LED
Hello - I am brand new to electronics but am trying to learn about BEAM and other art + science circuits.
I am looking to make a small analog circuit to fade in and out a LED. I have looked online but have found a bunch of ones using a 555 timer or a PWM and other chips.
I saw a reference to doing this slow fade in and out technique using only capacitors and resistors but have been unable to find a diagram.
Can someone help me out.
FWIW - I am looking to charge this using solar and am only looking to drive one LED.
Ideally a days charge would last a few hours of fade in and out cycling with the cycle time being slow - somewhat like the Mac "Sleeping" LED.
Thank you in advance.