Today you can buy flashing LEDs; a simple two-lead component that requires only a power supply to produce even flashes of light. They look for all the world like any ...

This is because a blinking modem light indicates something ... If none of the modem’s LED lights are on, there is likely no power flowing to the device. Some lights that are typically not ...

Blinking an LED with three resistors and a capacitor. Ok, ok… one of the resistors is a light-dependent resistor, but still. In reality, this is a classic relaxation oscillator. The capacitor ...