A simple slowly-glowing LED effect using a 555 timer.
Here’s a quick demo..
This is a simple circuit that flashes an LED at a fairly slow rate (0.5Hz) with ~50% duty cycle.
A 555 timer provides the oscillation, with R1=4.7k, R2=330k and C1=4.7uF.
The “glow” effect is achieved with a RC filter with time constant (𝛕) of about 103ms.
LEAP is my personal collection of electronics projects - usually involving an Arduino or other microprocessor in one way or another. Some are full-blown projects, while many are trivial breadboard experiments, intended to learn and explore something interesting.
Projects are often inspired by things found wild on the net, or ideas from the many great electronics podcasts and YouTube channels. Feel free to borrow liberally, and if you spot any issues do let me know or send a pull-request.
NOTE: For a while I included various scale modelling projects here too, but I've now split them off into a new repository: check out LittleModelArt if you are looking for these projects.