Instructables: exploring - electronics - 555 - featured http://www.instructables.com Fri, 29 Apr 2016 09:10:46 PDT BLOX v1.01 Soldering Surface Mount Parts http://www.instructables.com/id/Soldering-Surface-Mount-Parts/
Soldering Surface Mount Parts - More DIY How To Projects]]> http://cdn.instructables.com/FOP/ET9S/IMDZEG9A/FOPET9SIMDZEG9A.SQUARE2.jpg http://cdn.instructables.com/FOP/ET9S/IMDZEG9A/FOPET9SIMDZEG9A.SQUARE.jpg http://cdn.instructables.com/FOP/ET9S/IMDZEG9A/FOPET9SIMDZEG9A.SMALL.jpg JRV31 The first thing you need to solder surface mount parts is confidence. It's not as hard as you think it will be. I need three different pair of glasses, one with bifocals, for my old eyes and I was able to get it right, on the second try.I will be soldering a 555 timer to a Sparkfun eight pin SOIC br...
By: JRV31

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Fri, 1 Apr 2016 05:54:38 PDT
Breadboard 555 Timer http://www.instructables.com/id/Breadboard-555-Timer/
Breadboard 555 Timer - More DIY How To Projects]]> http://cdn.instructables.com/FC8/HV35/ILCHCPG2/FC8HV35ILCHCPG2.SQUARE2.jpg http://cdn.instructables.com/FC8/HV35/ILCHCPG2/FC8HV35ILCHCPG2.SQUARE.jpg http://cdn.instructables.com/FC8/HV35/ILCHCPG2/FC8HV35ILCHCPG2.SMALL.jpg JRV31 This is a 555 timer built on a breadboard. The 555 timer is an 8 pin IC chip, but I thought it would be fun to build my own on a breadboard. There are five sections to the chip, it will be built on five Adafruit Perma Proto boards. The design is from an open source kit from Evil Mad Scientist Labora...
By: JRV31

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Fri, 4 Mar 2016 05:44:46 PST
555 50% Duty Cycle Variable Squarewave Generator http://www.instructables.com/id/555-50-Duty-Cycle-Variable-Squarewave-Generator/
555 50% Duty Cycle Variable Squarewave Generator - More DIY How To Projects]]> http://cdn.instructables.com/FPF/YR8B/IKY6K6LX/FPFYR8BIKY6K6LX.SQUARE2.jpg http://cdn.instructables.com/FPF/YR8B/IKY6K6LX/FPFYR8BIKY6K6LX.SQUARE.jpg http://cdn.instructables.com/FPF/YR8B/IKY6K6LX/FPFYR8BIKY6K6LX.SMALL.jpg satchelfrost Specifications Variable frequency (ranging from as high as 250kHz and below)Constant 50% duty cycle across all of these frequenciesCapacitor input for changing frequency (150pF lowest to as high as you like)Potentiometer for changing frequencyOutput pins"built in" power supply Additional features RC...
By: satchelfrost

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Tue, 23 Feb 2016 20:07:27 PST
Hand made IR remote http://www.instructables.com/id/Hand-Made-IR-Remote/
Hand made IR remote - More DIY How To Projects]]> http://cdn.instructables.com/F3G/YX5C/IKSN2JVV/F3GYX5CIKSN2JVV.SQUARE2.jpg http://cdn.instructables.com/F3G/YX5C/IKSN2JVV/F3GYX5CIKSN2JVV.SQUARE.jpg http://cdn.instructables.com/F3G/YX5C/IKSN2JVV/F3GYX5CIKSN2JVV.SMALL.jpg Sandy65 In my earlier project I used this device as a IR Transmitter and promised to upload this project description in next instructables.So here I present you IR Transmitter using 555 Timer.Last project in which this remoteWe want to design a astable multivibrator of 38KHz. This can be done by using 555 T...
By: Sandy65

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Sat, 13 Feb 2016 17:26:24 PST
Star Trek Red Alert sound effect (using 555 timers) http://www.instructables.com/id/Star-Trek-Red-Alert-Sound-Effect-using-555-Timers/
Star Trek Red Alert sound effect (using 555 timers) - More DIY How To Projects]]> http://cdn.instructables.com/FVV/CF9H/IJHJPZBQ/FVVCF9HIJHJPZBQ.SQUARE2.jpg http://cdn.instructables.com/FVV/CF9H/IJHJPZBQ/FVVCF9HIJHJPZBQ.SQUARE.jpg http://cdn.instructables.com/FVV/CF9H/IJHJPZBQ/FVVCF9HIJHJPZBQ.SMALL.jpg transistors My family went on a Star Trek kick recently and I was trying to make something related so I made this to simulate the Star Trek red alert.First I looked online to find a circuit diagram but I couldn't find any working projects that didn't use an audio recording module. (which doesn't count!)So I had...
By: transistors

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Sun, 17 Jan 2016 05:21:14 PST
RGB LED constant current fade effect with transistors http://www.instructables.com/id/RGB-LED-Constant-Current-Fade-Effect-With-Transist/
RGB LED constant current fade effect with transistors - More DIY How To Projects]]> http://cdn.instructables.com/F08/FI6J/IJD9EKKX/F08FI6JIJD9EKKX.SQUARE2.jpg http://cdn.instructables.com/F08/FI6J/IJD9EKKX/F08FI6JIJD9EKKX.SQUARE.jpg http://cdn.instructables.com/F08/FI6J/IJD9EKKX/F08FI6JIJD9EKKX.SMALL.jpg nusnus I was bored so I started to fiddle around with transistors. The reason this became a LED fade and constant current circuit is just because the parts were at hand and lights in different colors is always cool. Please see attached video of the device working. The colors are overexposured but you get t...
By: nusnus

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Thu, 14 Jan 2016 07:11:34 PST
Battery float charger http://www.instructables.com/id/Battery-Float-Charger/
Battery float charger - More DIY How To Projects]]> http://cdn.instructables.com/F8P/8YH1/IIUKCKP3/F8P8YH1IIUKCKP3.SQUARE2.jpg http://cdn.instructables.com/F8P/8YH1/IIUKCKP3/F8P8YH1IIUKCKP3.SQUARE.jpg http://cdn.instructables.com/F8P/8YH1/IIUKCKP3/F8P8YH1IIUKCKP3.SMALL.jpg Nobilis Ensuring your vehicle batteries are always in good condition is important.Preserving of our environment is/should be mandatory.This project supports both purpose. It recycles an outdated feature phone wall adapter to create a lead-acid battery float charger. The wall adapter gets a new life and the ...
By: Nobilis

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Thu, 31 Dec 2015 14:56:13 PST
Sunshine Alarm using LM555 and LM358 http://www.instructables.com/id/Sunshine-Alarm-using-LM555-and-LM358/
Sunshine Alarm using LM555 and LM358 - More DIY How To Projects]]> http://cdn.instructables.com/F8X/7UXU/IHUYQ1JJ/F8X7UXUIHUYQ1JJ.SQUARE2.jpg http://cdn.instructables.com/F8X/7UXU/IHUYQ1JJ/F8X7UXUIHUYQ1JJ.SQUARE.jpg http://cdn.instructables.com/F8X/7UXU/IHUYQ1JJ/F8X7UXUIHUYQ1JJ.SMALL.jpg Samartist Hello friends,This is a simple design alarm for your winter breaks. With this alarm you need not set time, it detects the day light in the morning and generates beep sound for approx. 1 minute. You need not set time for your winters, just set the sensitivity for the daylight detection through the po...
By: Samartist

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Mon, 7 Dec 2015 01:48:30 PST
The Malicious Forever Repeating Greeting Card http://www.instructables.com/id/The-Malicious-Forever-Repeating-Greeting-Card/
The Malicious Forever Repeating Greeting Card - More DIY How To Projects]]> http://cdn.instructables.com/FHN/MA7I/IGM5O4KL/FHNMA7IIGM5O4KL.SQUARE2.jpg http://cdn.instructables.com/FHN/MA7I/IGM5O4KL/FHNMA7IIGM5O4KL.SQUARE.jpg http://cdn.instructables.com/FHN/MA7I/IGM5O4KL/FHNMA7IIGM5O4KL.SMALL.jpg 321him Recently I had seen a few products that used the power of the greeting card and make it into a malicious device that repeats itself forever (or at least till the battery dies.) The version I have hacked today involves removing the greeting card batteries and replacing it with a 9 volt and adding a 5...
By: 321him

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Thu, 5 Nov 2015 09:21:53 PST
Oscillator circuits for the 555 timer http://www.instructables.com/id/Oscillator-circuits-for-the-555-timer/
Oscillator circuits for the 555 timer - More DIY How To Projects]]> http://cdn.instructables.com/F82/M05O/IG2HG92R/F82M05OIG2HG92R.SQUARE2.jpg http://cdn.instructables.com/F82/M05O/IG2HG92R/F82M05OIG2HG92R.SQUARE.jpg http://cdn.instructables.com/F82/M05O/IG2HG92R/F82M05OIG2HG92R.SMALL.jpg JRV31 In my first Instructable about the 555 timer chip (Introduction to the 555 timer) I demonstrated a 555 in an astable oscillator. I would like to thank Mike63 for sending me a couple of useful formulas to calculate the frequency and the low time. Frequency = 1 / (0.693 X C1 X (R1 + 2 X R2...
By: JRV31

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Fri, 23 Oct 2015 06:08:18 PDT
Introduction to the 555 timer http://www.instructables.com/id/Introduction-to-the-555-timer/
Introduction to the 555 timer - More DIY How To Projects]]> http://cdn.instructables.com/FDU/19AS/IFK0ZELS/FDU19ASIFK0ZELS.SQUARE2.jpg http://cdn.instructables.com/FDU/19AS/IFK0ZELS/FDU19ASIFK0ZELS.SQUARE.jpg http://cdn.instructables.com/FDU/19AS/IFK0ZELS/FDU19ASIFK0ZELS.SMALL.jpg JRV31 This instructable is the first step in my learning to use the 555 timer chip. It alternately blinks two LEDs, and you can change the frequency by changing either the resistance or the capacitance. The 555 is not programmable like an Arduino or an ATtiny. You have to change the values of the capacito...
By: JRV31

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Sat, 10 Oct 2015 07:14:48 PDT
How to make a 555 timer chip circuit http://www.instructables.com/id/How-to-make-a-555-timer-chip-circuit/
How to make a 555 timer chip circuit - More DIY How To Projects]]> http://cdn.instructables.com/FA8/RFMB/IEOP7L0E/FA8RFMBIEOP7L0E.SQUARE2.jpg http://cdn.instructables.com/FA8/RFMB/IEOP7L0E/FA8RFMBIEOP7L0E.SQUARE.jpg http://cdn.instructables.com/FA8/RFMB/IEOP7L0E/FA8RFMBIEOP7L0E.SMALL.jpg coolyyz154 This will be a tutorial on how to make a beginner 555 timer chip circuit to pulse a led on and off. This is a very easy circuit, all you need to know is basic electronics and how to use a breadboard. What is a 555 timer chip A 555 timer chip is a IC that is used in a variety of devices like time...
By: coolyyz154

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Thu, 17 Sep 2015 17:26:23 PDT
GaussGun / Coil-Gun Electronics and Engineering Project http://www.instructables.com/id/GaussGun-Coil-Gun-Electronics-and-Engineering-Proj/
GaussGun / Coil-Gun Electronics and Engineering Project - More DIY How To Projects]]> http://cdn.instructables.com/F1W/XH1N/I9UDSH7Q/F1WXH1NI9UDSH7Q.SQUARE2.jpg http://cdn.instructables.com/F1W/XH1N/I9UDSH7Q/F1WXH1NI9UDSH7Q.SQUARE.jpg http://cdn.instructables.com/F1W/XH1N/I9UDSH7Q/F1WXH1NI9UDSH7Q.SMALL.jpg Ikkalebob I decided to do the Gold Crest Award at my college, which is a great certification from the British Science Association that gives students an opportunity to expand their knowledge of science, technology, engineering and maths by completing a project by themselves or with an experienced mentor of th...
By: Ikkalebob

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Tue, 19 May 2015 11:21:03 PDT
555 Pocket Keyboard http://www.instructables.com/id/555-Pocket-Keyboard/
555 Pocket Keyboard - More DIY How To Projects]]> http://cdn.instructables.com/FJ4/JK06/HVTFS0HJ/FJ4JK06HVTFS0HJ.SQUARE2.jpg http://cdn.instructables.com/FJ4/JK06/HVTFS0HJ/FJ4JK06HVTFS0HJ.SQUARE.jpg http://cdn.instructables.com/FJ4/JK06/HVTFS0HJ/FJ4JK06HVTFS0HJ.SMALL.jpg Samartist Hello every body, this is a 555 timer-musical-keyboard project, with exact sounds of the key, i saw a project here...http://www.instructables.com/id/555-Pocket-SynthKe...but in this project, the keys don't give exact notes, so i designed a few things, added a few potentiometers to the circuit which ...
By: Samartist

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Fri, 30 May 2014 07:43:24 PDT
WIRELESS 555 timer mouse modification http://www.instructables.com/id/WIRELESS-555-timer-mouse-modification/
WIRELESS 555 timer mouse modification - More DIY How To Projects]]> http://cdn.instructables.com/F04/6LIX/HMMF0XNZ/F046LIXHMMF0XNZ.SQUARE2.jpg http://cdn.instructables.com/F04/6LIX/HMMF0XNZ/F046LIXHMMF0XNZ.SQUARE.jpg http://cdn.instructables.com/F04/6LIX/HMMF0XNZ/F046LIXHMMF0XNZ.SMALL.jpg TSJWang First of all, my blog/the original. Second of all, I would like to mention how easy Instructables is to use. It's just so much easier to give instructions when you can label your pictures and answer comments. Lets get to business... A couple years ago I followed this instructable: Add a rapid-fir...
By: TSJWang

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Sat, 12 Oct 2013 14:14:20 PDT
Chicken Theremin http://www.instructables.com/id/Chicken-Theremin/
Chicken Theremin - More DIY How To Projects]]> http://cdn.instructables.com/FCV/2WXK/HLY7C8GP/FCV2WXKHLY7C8GP.SQUARE2.jpg http://cdn.instructables.com/FCV/2WXK/HLY7C8GP/FCV2WXKHLY7C8GP.SQUARE.jpg http://cdn.instructables.com/FCV/2WXK/HLY7C8GP/FCV2WXKHLY7C8GP.SMALL.jpg tinyweasel We made this chicken as part of the Instructables August Build night with Jameco. Our makerspace is called Make Shop, we're in Dublin and we're part of the Science Gallery. Since Jameco were nice enough to give us some 555 timers, we thought it would be cool to use them to make some crazy noises. We...
By: tinyweasel

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Mon, 23 Sep 2013 16:46:44 PDT
Thankful donation jar http://www.instructables.com/id/Thankful-donation-jar/
Thankful donation jar - More DIY How To Projects]]> http://cdn.instructables.com/FRL/AD39/HKM8YVPU/FRLAD39HKM8YVPU.SQUARE2.jpg http://cdn.instructables.com/FRL/AD39/HKM8YVPU/FRLAD39HKM8YVPU.SQUARE.jpg http://cdn.instructables.com/FRL/AD39/HKM8YVPU/FRLAD39HKM8YVPU.SMALL.jpg taipeihackerspace This instructable is part of the August Build Night with Jameco at the Taipei Hackerspace. During that event we were making circuits around the 555 timer IC, one basic and fun element of the electronics hacker repertoire, that have a lot of uses and very valuable to know its operation in general. W...
By: taipeihackerspace

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Wed, 21 Aug 2013 20:07:50 PDT
Simple Electronic Piano with 555 timer in CD Case http://www.instructables.com/id/Simple-Electronic-Piano-with-555-timer-in-CD-Case/
Simple Electronic Piano with 555 timer in CD Case - More DIY How To Projects]]> http://cdn.instructables.com/F9V/VOEZ/HGU2PLGQ/F9VVOEZHGU2PLGQ.SQUARE2.jpg http://cdn.instructables.com/F9V/VOEZ/HGU2PLGQ/F9VVOEZHGU2PLGQ.SQUARE.jpg http://cdn.instructables.com/F9V/VOEZ/HGU2PLGQ/F9VVOEZHGU2PLGQ.SMALL.jpg faziefazie In this instructable, I will show you how to make a simple electronic piano with common components. It uses capacitors and resistors, so you could easily modify the circuit. When the project is finished you will have a working simple circuit that can produce a variety of tones. Of course, there are...
By: faziefazie

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Tue, 21 May 2013 06:16:13 PDT
555 Crriter Repellent http://www.instructables.com/id/555-Crriter-Repellant/
555 Crriter Repellent - More DIY How To Projects]]> http://cdn.instructables.com/FI0/0IEL/HAVGK8EE/FI00IELHAVGK8EE.SQUARE2.jpg http://cdn.instructables.com/FI0/0IEL/HAVGK8EE/FI00IELHAVGK8EE.SQUARE.jpg http://cdn.instructables.com/FI0/0IEL/HAVGK8EE/FI00IELHAVGK8EE.SMALL.jpg Bot1398 Many of the citizen scientists all around the world might have faced this problem that thier sunflower or any other plant is eaten up by critters before it even fully grows , so I have come up with a very simple solution to this problem , expose the critters to high frequency noise which they woulde...
By: Bot1398

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Sat, 19 Jan 2013 02:17:29 PST
555 Timer Hacks: Cable Testers, Magnetic Stirrers, and Lego Grabbers Oh My! http://www.instructables.com/id/Hack-Your-Snap-Circuits-a-Minimalist-Very-Few-Co/
555 Timer Hacks: Cable Testers, Magnetic Stirrers, and Lego Grabbers Oh My! - More DIY How To Projects]]> http://cdn.instructables.com/FGU/W9TH/H8TTO0OU/FGUW9THH8TTO0OU.SQUARE2.jpg http://cdn.instructables.com/FGU/W9TH/H8TTO0OU/FGUW9THH8TTO0OU.SQUARE.jpg http://cdn.instructables.com/FGU/W9TH/H8TTO0OU/FGUW9THH8TTO0OU.SMALL.jpg KRA5H Want to learn about the 555 Timer IC? In this Instructable I'll show you how to add a 555 to your collection of Snap Circuits blocks and build circuits you can use to experiment with the following: Build an optical Theremin Build practical joke lie detector. Does adding salt to water decrease it'...
By: KRA5H

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Tue, 18 Sep 2012 15:53:21 PDT
555 Timer http://www.instructables.com/id/555-Timer/
555 Timer - More DIY How To Projects]]> http://cdn.instructables.com/FL3/NISZ/H7KZ295B/FL3NISZH7KZ295B.SQUARE2.jpg http://cdn.instructables.com/FL3/NISZ/H7KZ295B/FL3NISZH7KZ295B.SQUARE.jpg http://cdn.instructables.com/FL3/NISZ/H7KZ295B/FL3NISZH7KZ295B.SMALL.jpg amandaghassaei This tutorial provides sample circuits to set up a 555 timer in monostable, astable, and bistable modes as well as an in depth discussion of how the 555 timer works and how to choose components to use with it. The 555 timer is a chip that can be used to create pulses of various durations, to output...
By: amandaghassaei

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Tue, 25 Sep 2012 00:36:50 PDT
Build an Optical Theremin--Improve Your Snap Circuits by Adding a 555 Timer Integrated Circuit II http://www.instructables.com/id/Build-an-Optical-Theremin-Improve-Your-Snap-Circu/
Build an Optical Theremin--Improve Your Snap Circuits by Adding a 555 Timer Integrated Circuit II - More DIY How To Projects]]> http://cdn.instructables.com/FDP/A0KJ/H5EDUZTD/FDPA0KJH5EDUZTD.SQUARE2.jpg http://cdn.instructables.com/FDP/A0KJ/H5EDUZTD/FDPA0KJH5EDUZTD.SQUARE.jpg http://cdn.instructables.com/FDP/A0KJ/H5EDUZTD/FDPA0KJH5EDUZTD.SMALL.jpg KRA5H In this Instructable, you will learn how to improve your collection of Snap Circuits blocks by adding a 555 Timer IC and building an optical theremin. You will learn the functions of the pins on the 555 chip. You will learn that when the 555 is in astable mode, the output of pin 3 is a continuous st...
By: KRA5H

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Thu, 16 Aug 2012 15:32:42 PDT
Build a Tone Generator--Improve Your Snap Circuits by Adding a 555 Timer IC http://www.instructables.com/id/Build-a-Tone-Generator-Improve-Your-Snap-Circuits/
Build a Tone Generator--Improve Your Snap Circuits by Adding a 555 Timer IC - More DIY How To Projects]]> http://cdn.instructables.com/FAZ/HBTR/H5IRUX98/FAZHBTRH5IRUX98.SQUARE2.jpg http://cdn.instructables.com/FAZ/HBTR/H5IRUX98/FAZHBTRH5IRUX98.SQUARE.jpg http://cdn.instructables.com/FAZ/HBTR/H5IRUX98/FAZHBTRH5IRUX98.SMALL.jpg KRA5H In this article, you will learn how to improve your collection of Snap Circuits blocks by adding a 555 Timer IC. You will learn the functions the pins on the 555 chip. You will learn that when the 555 is in astable mode, the output of pin 3 is a continuous stream of pulses called a square wave that ...
By: KRA5H

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Mon, 6 Aug 2012 15:07:21 PDT
Build Your Own 555 Timer http://www.instructables.com/id/Build-Your-Own-555-Timer/
Build Your Own 555 Timer - More DIY How To Projects]]> http://cdn.instructables.com/FTW/KERR/H5ENPTKZ/FTWKERRH5ENPTKZ.SQUARE2.jpg http://cdn.instructables.com/FTW/KERR/H5ENPTKZ/FTWKERRH5ENPTKZ.SQUARE.jpg http://cdn.instructables.com/FTW/KERR/H5ENPTKZ/FTWKERRH5ENPTKZ.SMALL.jpg Teslaling The 555 timer. A chip so versatile that it has been used in everything from toys to spacecraft. A chip that can act as an oscillator, a schmitt trigger, PWM driver, a siren/alarm, a light or dark detector, and much much more. It is the most popular IC of all time having been around since 1971 and no...
By: Teslaling

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Fri, 3 Aug 2012 10:33:09 PDT
Electronic Paperweight http://www.instructables.com/id/Electronic-Paperweight/
Electronic Paperweight - More DIY How To Projects]]> http://cdn.instructables.com/FQC/79K8/H3E7JLRO/FQC79K8H3E7JLRO.SQUARE2.jpg http://cdn.instructables.com/FQC/79K8/H3E7JLRO/FQC79K8H3E7JLRO.SQUARE.jpg http://cdn.instructables.com/FQC/79K8/H3E7JLRO/FQC79K8H3E7JLRO.SMALL.jpg TinkerJim Imagine a paperweight that not only holds piles of paper in place, but perpetually blinks !  Basic Components A solar cell, supercapacitor, and a new ultra low power 555 chip make it possible ! The CSS555 Micropower Timer IC The heart of this novelty is the CSS555 timer integrated circuit. I...
By: TinkerJim

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Thu, 21 Jun 2012 08:59:41 PDT
Metronome http://www.instructables.com/id/Metronome/
Metronome - More DIY How To Projects]]> http://cdn.instructables.com/FBG/REIC/GOOP5JWQ/FBGREICGOOP5JWQ.SQUARE2.jpg http://cdn.instructables.com/FBG/REIC/GOOP5JWQ/FBGREICGOOP5JWQ.SQUARE.jpg http://cdn.instructables.com/FBG/REIC/GOOP5JWQ/FBGREICGOOP5JWQ.SMALL.jpg randofo So, you have built an electric cigar box guitar and started to get playing, only to realize that you don't know how. In fact, you can't even keep time. Your playing keeps getting faster and slower. It sounds like you need a metronome. A metronome is a device that helps you keep a steady time when y...
By: randofo

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Thu, 7 Jul 2011 09:49:05 PDT
Easy AM Transmitter! http://www.instructables.com/id/Easy-AM-Transmitter/
Easy AM Transmitter! - More DIY How To Projects]]> http://cdn.instructables.com/FAM/XKTY/GIJG2GXO/FAMXKTYGIJG2GXO.SQUARE2.jpg http://cdn.instructables.com/FAM/XKTY/GIJG2GXO/FAMXKTYGIJG2GXO.SQUARE.jpg http://cdn.instructables.com/FAM/XKTY/GIJG2GXO/FAMXKTYGIJG2GXO.SMALL.jpg jensenr30 You are going to build an AM radio transmitter AND you will be shown how it works. When you finish your radio, it will look something like mine in the picture above. I have attached the PDF file in the last step to this Inst'able for those without a pro membership. Parts and Prep (Small Stuff) ...
By: jensenr30

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Fri, 7 Jan 2011 13:53:14 PST
A Stylophone http://www.instructables.com/id/A-Stylophone/
A Stylophone - More DIY How To Projects]]> http://cdn.instructables.com/FXB/KV9B/GE7LFG4H/FXBKV9BGE7LFG4H.SQUARE2.jpg http://cdn.instructables.com/FXB/KV9B/GE7LFG4H/FXBKV9BGE7LFG4H.SQUARE.jpg http://cdn.instructables.com/FXB/KV9B/GE7LFG4H/FXBKV9BGE7LFG4H.SMALL.jpg drj113 I was browsing through the Instructables technology area the other day looking at musical circuits, and I noticed that there was a project that was missing...  The good old fashioned Stylophone.  There are a couple of wonderful examples that were there in the spirit of the original (with even bett...
By: drj113

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Wed, 22 Sep 2010 17:38:47 PDT
Homemade Annoy-a-thing (Annoy-a-tron) http://www.instructables.com/id/Homemade-Annoy-a-thing-Annoy-a-tron/
Homemade Annoy-a-thing (Annoy-a-tron) - More DIY How To Projects]]> http://cdn.instructables.com/F1H/NK25/FRTXG894/F1HNK25FRTXG894.SQUARE2.jpg http://cdn.instructables.com/F1H/NK25/FRTXG894/F1HNK25FRTXG894.SQUARE.jpg http://cdn.instructables.com/F1H/NK25/FRTXG894/F1HNK25FRTXG894.SMALL.jpg let_it_out_org Thinkgeek.com sells a thing called an annoy-a-tron. Its basically a device that, when activated, beeps at a varied interval. While this instructable does not create an exact replica of think geek's annoy-a-tron, if you've got the materials and the know-how, you can make quite a few and deploy an ent...
By: let_it_out_org

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Thu, 5 Mar 2009 09:56:24 PST
Add a rapid-fire button to your mouse using a 555 timer http://www.instructables.com/id/Add-a-rapid-fire-button-to-your-mouse-using-a-555-/
Add a rapid-fire button to your mouse using a 555 timer - More DIY How To Projects]]> http://cdn.instructables.com/FY7/T8LE/FM2KBGQ3/FY7T8LEFM2KBGQ3.SQUARE2.jpg http://cdn.instructables.com/FY7/T8LE/FM2KBGQ3/FY7T8LEFM2KBGQ3.SQUARE.jpg http://cdn.instructables.com/FY7/T8LE/FM2KBGQ3/FY7T8LEFM2KBGQ3.SMALL.jpg mothflavour2 Does your finger get tired easily while playing video games? Ever wish you could pwn n00bs faster than the speed of light without ever breaking a sweat? This Instructable will show you how. What you need Originally, I built this circuit specifically to make the Engineer/Scout's pistol in Team F...
By: mothflavour2

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Tue, 14 Oct 2008 10:21:47 PDT
Automatic Aquarium Feeder http://www.instructables.com/id/Automatic-Aquarium-Feeder/
Automatic Aquarium Feeder - More DIY How To Projects]]> http://cdn.instructables.com/FFX/0FOR/FKD1I12G/FFX0FORFKD1I12G.SQUARE2.jpg http://cdn.instructables.com/FFX/0FOR/FKD1I12G/FFX0FORFKD1I12G.SQUARE.jpg http://cdn.instructables.com/FFX/0FOR/FKD1I12G/FFX0FORFKD1I12G.SMALL.jpg paulrobinson Its An Automatic Fish Feeder / Powerhead or Airpump controller Everyday I had to turn off my aquarium's powerhead/air pump and feed manually and turn on the air again after an hour. So I found very cheap alternative to make these process fully automatic. What You Need? Alarm Clock 555 timer IC ...
By: paulrobinson

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Tue, 2 Sep 2008 03:35:15 PDT
How To Build An Optical Theremin http://www.instructables.com/id/How-To-Build-An-Optical-Theremin/
How To Build An Optical Theremin - More DIY How To Projects]]> http://cdn.instructables.com/F0T/JA38/FBU0WYNO/F0TJA38FBU0WYNO.SQUARE2.jpg http://cdn.instructables.com/F0T/JA38/FBU0WYNO/F0TJA38FBU0WYNO.SQUARE.jpg http://cdn.instructables.com/F0T/JA38/FBU0WYNO/F0TJA38FBU0WYNO.SMALL.jpg sacred What is a theremin? It is an instrument that can be played without being touched. Traditional theremins use antennas and oscillators to sense a person's hand and generate a tone. Ours will use light instead of this, it is not an actual theremin, it just uses similar principles. As a side note, this ...
By: sacred

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Thu, 24 Jan 2008 18:31:02 PST
Magno-Sniffer (Magnetic Sniffer Probe Whistler Thing Using A Hall Effect Sensor) http://www.instructables.com/id/Magno-Sniffer-Magnetic-Sniffer-Probe-Whistler-Thi/
Magno-Sniffer (Magnetic Sniffer Probe Whistler Thing Using A Hall Effect Sensor) - More DIY How To Projects]]> http://cdn.instructables.com/F1I/R8B9/E96ERXTS7ZO/F1IR8B9E96ERXTS7ZO.SQUARE2.jpg http://cdn.instructables.com/F1I/R8B9/E96ERXTS7ZO/F1IR8B9E96ERXTS7ZO.SQUARE.jpg http://cdn.instructables.com/F1I/R8B9/E96ERXTS7ZO/F1IR8B9E96ERXTS7ZO.SMALL.jpg pronteon Working with magnets and want a fast way to tell their NORTHs from their SOUTHs? Want to get an idea of their field shapes? Like making weeeeeeeooooooeeeeeeoooo noises? Build a Magno-Sniffer using a hall effect sensor, 555 oscillator circuit, piezo speaker, tongue depressor, hot glue, and a few oth...
By: pronteon

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Wed, 27 Sep 2006 00:15:04 PDT