NE555

The 555 timer IC is an integrated circuit (chip) used in a variety of timer, pulse generation, and oscillator applications. The 555 can be used to provide time delays, as an oscillator, and as a flip-flop element. Derivatives provide two (556) or four (558) timing circuits in one package. Introduced in 1972 by Signetics, the 555 is still in widespread use due to its low price, ease of use, and stability. It is now made by many companies in the original bipolar and in low-power CMOS technologies. As of 2003, it was estimated that 1 billion units were manufactured every year. The 555 is the most popular integrated circuit ever manufactured.

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Point to Point Atari Punk Console One and a Half

“What!?? Another Atari Punk Console build? Wait wait wait people, this one is different, promise. Waaay back in 1982, Forrest Mims, Radio Shack booklet writer and Young Earth Creationist (roll eyes emoji) published the plans to his Stepped Tone Generator …

Parallel Sequencer Synth

“This is a guide for creating a simple sequencer. A sequencer is a device that cyclically produces a series of steps that then drive an oscillator. Each step can be assigned to a different tone and thus create interesting sequences …

Giga-Max 555: the Giant 555 Timer

“For Electronics Enthusiast like me, it is impossible to forget how great the 555 timer IC is. Thanks to its simplicity, versatility and its low price, millions of users from hobbyist to professional level have made so much projects out …

Reloj - 7400 Series Digital Clock

“This project was inspired by my dad’s university digital systems project from the late 1970’s. I found the writeup and schematic and decided to try and re-create it. You can see the results of the breadboard reproduction and …

An ESP8266-based Temperature, Humidity and Line Voltage monitor

“As anyone who reads this blog probably knows, I have a bit to do with the operation and maintenance of the Northern Utah WebSDR - a remote receiver system that allows anyone with Internet access and a web browser to listen …

cVert - A truly random MIDI controller

“cVert is the result of an idea I’ve been kicking around for years, and took a few months of work to bring to fruition. The idea was to use a Geiger counter as a true random number generator to …

Columns - a Retro Handheld Game for Arduino

“Based on the 1989 Sega(R) arcade and console game Columns which was inspired by Tetris, this is a more modern take on a plausible handheld portable version as would have been envisioned in the late 1980’s. My version …

Ultrasonic Sound Gun (Parametric Speaker)

“I built a gun that shoots out a narrow beam of ultrasonic audio. The sound can only be heard by people inside the narrow beam. For this project I built a gun that shoots out a narrow beam of ultrasonic …

Electronic Loud Horn Using 555 Timer

“The LM555 generates an electronic horn signal which is amplified by an LM386. The tone and volume of the horn can be easily varied. The horn can be used in a car, scooter, cycle, and motorbike. Electronic Components: 1x IC …

LED Distance Indicator Dog Harness

“I usually take my dog Rusio for a walk when the sun goes down so he can play without getting too hot. The problem is that when he’s off the leash sometimes he gets too excited and runs further …