Category Archives: 555

Drive A Plasma Ball With An ATV Ignition Coil And A 555

[Discrete Electronics Guy] sends in his short tutorial on building a high voltage power supply from simple things.

The circuit is a classic, but we love the resourcefulness shown. The ignition coil comes from a three wheeler, the primary power supply is a ATX supply from a computer and the …read more

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Posted in 555, high voltage, how-to, ignition coil, plasma bulb | Leave a comment

Hackaday Podcast 042: Capacitive Earthquakes, GRBL on ESP32, Solenoid Engines, and the TI-99 Space Program

Hackaday Editors Elliot Williams and Mike Szczys talk turkey on the latest hacks. Random numbers, art, and electronic geekery combine into an entropic masterpiece. We saw Bart Dring bring new life to a cool little multi-pen plotter from the Atari age. Researchers at UCSD built a very very very slow …read more

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Posted in 555, 5g, earthquake, earthquake detector, entropy, Grbl_ESP32, Hackaday Columns, kerbal space program, podcast, Podcasts, soft robotics, speaking clock, TI-99 | Leave a comment

DIY Clapper Lets You Pick Your Components

One thing that always means the end of the year is close is the reappearance of TV ads for “The Clapper.” After all, who needs home automation when you can clap on and clap off? While we’re partial to our usual home automation solutions, [Utsource123] shows us that building a …read more

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Posted in 555, circuit design, clapper, dead bug, misc hacks, parts, transistor, trigger | Leave a comment

A Capacitive Soil Sensor Hack For Lower Voltage Supplies

A frequent beginner project involves measuring soil moisture levels by measuring its resistance with a couple of electrodes. These electrodes are available ready-made as PCBs, but suffer badly from corrosion. Happily there is a solution in the form of capacitive sensor probes, and it is these that [Electrobob] is incorporating …read more

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Posted in 555, capacitive sensor, green hacks, moisture sensor, soil sensor | Leave a comment

A Baby Named DJ

Some of us are guilty of picking up questionable hardware from garage sales, fleamarkets, and well-meaning relatives. There is a balance between turning down a good investment and hoarding, and if we figure out how to tell the difference you will be the first to know. [Clem Mayer] may start …read more

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Posted in 555, 555 audio, 555 timer, analog audio, analog circuitry, circuit bending, drum machine, how-to, music, musical hacks, synthesizer | Leave a comment

Fizzle Loop Synth Does It With 555 Timers

For every project that uses an Arduino to make soup or an ESP8266 to hash bitcoin, there’s always someone out there uttering the same old refrain. I could have done it with a 555. More often than not, this is true, even if it is tangential to the discussion being …read more

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Posted in 555, groovebox, musical hacks, noisebox, synth | Leave a comment

The Three Faces Of The 555

In these days of cheap microcontrollers, it is hard to remember there was a time when timing things took real circuitry. Even today, for some applications it is hard to beat the ubiquitous 555 timer IC. It is cheap, plentiful, and reliable. What’s interesting about the 555 is it isn’t …read more

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Making The World’s Fastest 555 Timer, Or Using A Modern IC Version

If you’re not familiar with the 555 timer, suffice it to say that this versatile integrated circuit is probably the most successful ever designed, and has been used in countless designs, many of which fall very far afield from the original intent. From its introduction, the legendary 555 has found …read more

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Love Inspires CD Player Hack

The heart is an impressive piece of hardware. It’s a rare pump that runs continuously for over 80 years in some cases. It’s also, for some reason or other, become a common human symbol of love and affection. In this vein, [Deepak Khatri] has built a beating electronic heart out …read more

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Posted in 555, classic hacks, heart, heartbeat, NE555 | Leave a comment

Freeforming the Atari Punk Console

This stunning piece of art is [Emily Velasco’s] take on the Atari Punk Console. It’s a freeform circuit that synthesizes sound using 555 timers. The circuit has been around for a long time, but her fabrication is completely new and simply incredible!

This isn’t [Emily’s] first rodeo. She previously built the mini CRT sculpture project seen to the left in the image above. Its centerpiece is a tiny CRT from an old video camera viewfinder, and it is fairly common for the driver circuit to understand composite video. And unlike CRTs, small video cameras with composite video output are easily …read more

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Posted in 555, 555 audio, 555 timer, 555 timer IC, atari punk console, blinking led, blinkingled, camcorder, camcorder viewfinder, Circuit Sculpture, contest, contests, crt, crt hacks, digital audio hacks, flickering led, led, led hacks, miniature CRT, musical hacks, photocell, video hacks | Leave a comment