555 timer IC is used here in astable operating mode which generates a continuous output in the form of square wave via pin 3 which turns the LED on and off. You can read here more about the different ...

Read through the code and understand how the timer is configured and used to toggle an LED at a regular interval. Then modify the code to change the blink rate of the LED by adjusting the timer period ...

Looking for something with a bit more style than the traditional kitchen timer, [Martin Jonasson] decided to take the last couple of months to design and build his own take on the idea using a rotary ...

This simple LED driver circuit allows us to drive up to seven LEDs by using a single NiMH (Nickel Metal Hydride) AA cell. The circuit produces voltage pulses at a much higher level than the input ...

We can turn LED on and off at a rate of one second by configuring TRIGGER and TH0,TL0. Timer 0's 16-bit counting register starts counting at 0x(TH0)(TL0) up to 0xFFFF, at a rate of one count per ...

The LED DIMMER is primarily a 555 IC based PWM (Pulse Width Modulation) circuit developed to get variable voltage over constant voltage. The method of PWM is explained below. Before we get start ...

This circuit (Fig. 1) simulates the old hourglass timer. A total of 32 LEDs create the effect of sand grains passing from the upper half of sand-glass to its lower half. When the power is switched ‘on ...