You can put LED flash notifications on your iPhone in a few simple steps, which can be helpful for people who are deaf or hard of hearing.

This is a very simple but useful project, strobe navigation lights for rc airplanes, or you can adjust the flashing time and ...

This time I bring an electronic kit for beginners, this is a very cheap and interesting device that displays audio levels into the LEDs just like any audio level bar indicator will do. It is simple ...