Flashing LED using 555 Timer circuit

Astable multivibrator-2 LED flashing circuit2N39043.7V

Many friends have requested an automatic on/off LED circuit or an LED flashing circuit. This post presents an astable multivibrator circuit designed for LED flashing. It is a simple astable multivibrator circuit utilizing two LEDs (specifically red LEDs) and two...

Audio Astable Multivibrator Using IC 555 Circuit

This circuit diagram illustrates the configuration of a 555 timer integrated circuit (IC) as an astable multivibrator. An astable multivibrator is a timing circuit characterized by unstable 'low' and 'high' states. Consequently, the output of an astable multivibrator continuously toggles...

LED Chaser

I don't know why, but people like blinking lights. You see LED chasers everywhere, in TV shows (Knight Rider), movies, and store windows. This schematic is my version of a simple 10 LED chaser. There is no 555 timer used...

Crank Doorbell Circuit Schematic

An interesting hobby circuit of a crank doorbell. The circuit is built around a 555 timer and a musical piezo buzzer. It operates using a 9-volt battery supply; a single 9-volt PP3/6F22 compact battery is sufficient to power the entire...

Audiostrobe-compatible LED glasses

Audiostrobe glasses are utilized alongside light and sound machines, as well as certain brainwave entrainment software. The glasses are equipped with built-in LEDs. Audiostrobe glasses are designed to enhance the sensory experience provided by light and sound machines, which are often...

how to make 18 led light chaser circuit

Decorative lights arranged in various moving patterns are visually appealing and have gained significant popularity in today's world. While more complex lighting arrangements may require the use of microcontroller ICs, simpler yet captivating light effects can be generated using ordinary...

555 Timer With Audio Alarm Circuit

555 Timer with Audio Alarm Circuit. This circuit serves as a straightforward electronic timer equipped with an audio alarm feature. The 555 timer is a versatile integrated circuit widely used in various timer, delay, pulse generation, and oscillator applications. In this...

555 simple electronic keyboard circuit

The controllable multivibrator, as illustrated in figure 14-40, consists of a 555 timer along with resistors RA, RP1, and capacitor C1. The oscillation frequency is influenced by the control voltage applied to pin 5. This control voltage is determined by...

Fading Leds Circuit

This circuit operates two LED strips in pulsing mode, where one LED strip transitions from an off state to gradually lighting up, then dimming, while the other LED strip performs the opposite action. Each strip can consist of 2 to...