what's going on with my LED dimmer circuit? Answered
I'm making a resin block lighting thing for my dorm room, but the lights are too bright to look directly at (and it's meant to be looked at). I decided to make a 555 dimmer circuit, and I used these plans.
when I built it, however, the LED stayed off. I couldn't figure out what was going on until I touched the two diodes in the circuit and noticed that the small current leaking through my skin caused the LED to blink slowly. I turned one of the diodes around, and lo and behold, the dimmer worked as expected.
so what I want to know is:
what was the purpose of the diodes in the original diagram?
was the positioning of the diodes just an error in the design?
should I run with what I have now (since it works), or do something different?