It is a pretty common first project to use an Arduino (or similar) to blink an LED. Which, of course, brings taunts of: you could have used a 555! You can, of course, also use any sort of oscillator, ...

Hello Everyone!<BR><BR>My friend at school made a 70 mile trip to dropp off her computer to me yesterday. She said the machine was on when she went to bed, but when she woke up in the morning it was ...

LEDs are often used on manmachine interfaces (MMIs) or device front panels to illuminate switches or backlight text information so that the user knows what the device is supposed to be doing at the ...