Instructables: exploring - stepbystep - electronics - popular http://www.instructables.com Tue, 3 May 2016 02:06:34 PDT BLOX v1.01 Reuse Old Phone Batteries As a Powerbank (earth Day Part 1) http://www.instructables.com/id/Reuse-Old-Phone-Batteries-As-a-Powerbank-earth-Day/
Reuse Old Phone Batteries As a Powerbank (earth Day Part 1) - More DIY How To Projects]]> http://cdn.instructables.com/FJL/MY81/INBZ2520/FJLMY81INBZ2520.SQUARE2.jpg http://cdn.instructables.com/FJL/MY81/INBZ2520/FJLMY81INBZ2520.SQUARE.jpg http://cdn.instructables.com/FJL/MY81/INBZ2520/FJLMY81INBZ2520.SMALL.jpg led_freak I guess you probably also belong to the majority of the worlds population that owns a smartphone and you probably had more than one during the past few years of smartphone evolution.With them, come used lithium ion batteries that you can not just keep on using inside your new phone.So you are stuck ...
By: led_freak

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Sat, 23 Apr 2016 10:23:04 PDT
Panelizing PCBs for Seeed Using Eagle Free / Light http://www.instructables.com/id/Panelizing-PCBs-for-Seeed-Using-Eagle-Free-Light/
Panelizing PCBs for Seeed Using Eagle Free / Light - More DIY How To Projects]]> http://cdn.instructables.com/FSE/J9YR/H1ZG79OX/FSEJ9YRH1ZG79OX.SQUARE2.jpg http://cdn.instructables.com/FSE/J9YR/H1ZG79OX/FSEJ9YRH1ZG79OX.SQUARE.jpg http://cdn.instructables.com/FSE/J9YR/H1ZG79OX/FSEJ9YRH1ZG79OX.SMALL.jpg spaceagerobotics Some PCB fab houses (like SeeedStudio, with their Fusion PCB service) will allow you to panelize smaller PCBs.  For example, if you have a 2.5cm x 5cm board, you could panelize two of them on to a single 5mm x 5mm PCB.  Or, put a 7cm x 7cm board and a bunch of 3cm x 3cm boards onto a 10cm x 10cm pan...
By: spaceagerobotics

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Fri, 18 May 2012 18:48:14 PDT
Parallel and Series Circuit http://www.instructables.com/id/Parallel-and-Series-Circuit/
Parallel and Series Circuit - More DIY How To Projects]]> http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif tjayfowler There are two basic types of electrical circuits; series and parallel. A complex circuit can consist of sub circuits of each kind. Series Circuit In a series circuit, the path of electrons from the negative (-) side to the positive (+) side goes through all the electrical components of the circui...
By: tjayfowler

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Fri, 18 Nov 2005 14:13:37 PST
Gray Hoverman TV Antenna Final Assembly http://www.instructables.com/id/Gray-Hoverman-TV-Antenna-Final-Assembly/
Gray Hoverman TV Antenna Final Assembly - More DIY How To Projects]]> http://cdn.instructables.com/FWN/VWLI/GITI74R4/FWNVWLIGITI74R4.SQUARE2.jpg http://cdn.instructables.com/FWN/VWLI/GITI74R4/FWNVWLIGITI74R4.SQUARE.jpg http://cdn.instructables.com/FWN/VWLI/GITI74R4/FWNVWLIGITI74R4.SMALL.jpg unclesam The Gray-Hoverman antenna final assembly is straightforward once all the parts are made. This is the last of several Instructables covering construction of this antenna that receives UHF stations and, optionally, those in the high end of the VHF band. A list of the other instructables is provided. T...
By: unclesam

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Wed, 12 Jan 2011 13:13:14 PST
How to Make a Voltage Inverter http://www.instructables.com/id/How-to-Make-a-Voltage-Inverter/
How to Make a Voltage Inverter - More DIY How To Projects]]> http://cdn.instructables.com/F8Z/PF1S/GD2J28G2/F8ZPF1SGD2J28G2.SQUARE2.jpg http://cdn.instructables.com/F8Z/PF1S/GD2J28G2/F8ZPF1SGD2J28G2.SQUARE.jpg http://cdn.instructables.com/F8Z/PF1S/GD2J28G2/F8ZPF1SGD2J28G2.SMALL.jpg Lenny24 Hello There! Now, heres my first Instructable and Ill show you, how to make a small Voltage Inverter (I mean, getting a NEGATIVE Voltage out of a POSITIVE) on you Bredboard. Some Amplifying circuits need negative voltage to work good. This circuit schould deliver enough current to power a small Op...
By: Lenny24

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Tue, 24 Aug 2010 10:49:20 PDT
Bluetooth page-turner pedal for sheet music apps http://www.instructables.com/id/Bluetooth-page-turner-pedal-for-sheet-music-apps/
Bluetooth page-turner pedal for sheet music apps - More DIY How To Projects]]> http://cdn.instructables.com/FNZ/YRK1/HTDSPSHT/FNZYRK1HTDSPSHT.SQUARE2.jpg http://cdn.instructables.com/FNZ/YRK1/HTDSPSHT/FNZYRK1HTDSPSHT.SQUARE.jpg http://cdn.instructables.com/FNZ/YRK1/HTDSPSHT/FNZYRK1HTDSPSHT.SMALL.jpg peakecentral This Instructable uses an Bluefruit EZ-Key module to make a Bluetooth page turner pedal. The pedal enables me to easily turn the page on any sheet music app I wish to use on my tablet, without taking my hands off my saxophone. I use it with the Mobile Sheets app on my Android tablet, but it works wi...
By: peakecentral

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Sun, 30 Mar 2014 09:41:14 PDT
Easy SSTC, Slayer Exciter On Steroids! http://www.instructables.com/id/Easy-SSTC-Slayer-Exciter-On-Steroids/
Easy SSTC, Slayer Exciter On Steroids! - More DIY How To Projects]]> http://cdn.instructables.com/FVQ/KYUF/IEB88FTY/FVQKYUFIEB88FTY.SQUARE2.jpg http://cdn.instructables.com/FVQ/KYUF/IEB88FTY/FVQKYUFIEB88FTY.SQUARE.jpg http://cdn.instructables.com/FVQ/KYUF/IEB88FTY/FVQKYUFIEB88FTY.SMALL.jpg -max- In this instructable, I'll show you how to build a REALLY powerful version of the slayer exciter circuit! This design is powerful enough to be considered an SSTC, or Solid State Tesla Coil! It can throw really hot electrical arcs of plasma over 3 inches long, and has the capability to be modulated! ...
By: -max-

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Thu, 10 Sep 2015 08:55:42 PDT
Make A Bridge Rectifier From Diodes http://www.instructables.com/id/Make-A-Bridge-Rectifier-From-Diodes/
Make A Bridge Rectifier From Diodes - More DIY How To Projects]]> http://cdn.instructables.com/FMG/1O4Q/I24LZN2N/FMG1O4QI24LZN2N.SQUARE2.jpg http://cdn.instructables.com/FMG/1O4Q/I24LZN2N/FMG1O4QI24LZN2N.SQUARE.jpg http://cdn.instructables.com/FMG/1O4Q/I24LZN2N/FMG1O4QI24LZN2N.SMALL.jpg Bits4Bots In this project we will build a bridge rectifier.In short, take AC and turn it into DC.For most alternative energy applications, we require a direct current (DC) voltage to be generated - for example to charge a bank of batteries. However wind turbines and wave power generators create an alternating...
By: Bits4Bots

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Thu, 6 Nov 2014 07:06:22 PST
How to memorize the resistor color code http://www.instructables.com/id/How-to-memorize-the-resistor-color-code/
How to memorize the resistor color code - More DIY How To Projects]]> http://cdn.instructables.com/F7P/EZKU/FTDBNH2Z/F7PEZKUFTDBNH2Z.SQUARE2.jpg http://cdn.instructables.com/F7P/EZKU/FTDBNH2Z/F7PEZKUFTDBNH2Z.SQUARE.jpg http://cdn.instructables.com/F7P/EZKU/FTDBNH2Z/F7PEZKUFTDBNH2Z.SMALL.jpg Bagunca How to memorize the Resistor Color Code The reason I came up with this is because in High School and in College they taught us the same offensive phrase, bad boys, etc, but Violet gives willingly. Although this is easy to memorize, it didn't make it easy to remember a color for a number without hav...
By: Bagunca

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Wed, 15 Apr 2009 09:30:20 PDT
Chromecast On/Off Switch http://www.instructables.com/id/Chromecast-OnOff-Switch/
Chromecast On/Off Switch - More DIY How To Projects]]> http://cdn.instructables.com/FMC/G4JT/INER6KJD/FMCG4JTINER6KJD.SQUARE2.jpg http://cdn.instructables.com/FMC/G4JT/INER6KJD/FMCG4JTINER6KJD.SQUARE.jpg http://cdn.instructables.com/FMC/G4JT/INER6KJD/FMCG4JTINER6KJD.SMALL.jpg MatthewM232 As any of you Chromecast owners will know, when you use the TV as the power supply for your Chromecast, your Chromecast will be on as long as the TV is on. Typically this isn't an issue, but we use an aerial to get our live TV and having the Chromecast on interrupts the signal. This switch was a pr...
By: MatthewM232

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Tue, 26 Apr 2016 15:23:24 PDT
How to Factor Polynomials on a Graphing Calculator (TI-83 and TI-84) http://www.instructables.com/id/How-to-Factor-Polynomials-on-a-Graphing-Calculator/
How to Factor Polynomials on a Graphing Calculator (TI-83 and TI-84) - More DIY How To Projects]]> http://cdn.instructables.com/FHU/GIJF/IFK1015Z/FHUGIJFIFK1015Z.SQUARE2.jpg http://cdn.instructables.com/FHU/GIJF/IFK1015Z/FHUGIJFIFK1015Z.SQUARE.jpg http://cdn.instructables.com/FHU/GIJF/IFK1015Z/FHUGIJFIFK1015Z.SMALL.jpg techno249 These instructions will explain step-by-step on how to factor polynomials on a TI-83/TI-84 graphing calculator Begin by selecting the PRGM button and scroll over to NEW, click ENTER and name the program and then click ENTER. Having the name relate to the formula is always a good idea. (Example: ...
By: techno249

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Sat, 10 Oct 2015 14:19:33 PDT
Quick Test for Electronic Tubes http://www.instructables.com/id/Quick-Test-for-Electronic-Tubes/
Quick Test for Electronic Tubes - More DIY How To Projects]]> http://cdn.instructables.com/F1U/URKR/FMEGF0J5/F1UURKRFMEGF0J5.SQUARE2.jpg http://cdn.instructables.com/F1U/URKR/FMEGF0J5/F1UURKRFMEGF0J5.SQUARE.jpg http://cdn.instructables.com/F1U/URKR/FMEGF0J5/F1UURKRFMEGF0J5.SMALL.jpg Phil B A friend was at a yard sale and bought a facsimile antique wall telephone that was really an AM tube radio. The radio did not work. I used a simple way to test the tubes and fixed the problem. Tube Circuitry Until the late 1970s many drug stores and electronics shops sold electron tubes. Th...
By: Phil B

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Sat, 18 Oct 2008 06:58:55 PDT
Replacement LCD TV stand http://www.instructables.com/id/Lost-or-stolen-LCD-TV-stand-Make-your-own-affor/
Replacement LCD TV stand - More DIY How To Projects]]> http://cdn.instructables.com/FQ0/5CRC/HIEZY2F6/FQ05CRCHIEZY2F6.SQUARE2.jpg http://cdn.instructables.com/FQ0/5CRC/HIEZY2F6/FQ05CRCHIEZY2F6.SQUARE.jpg http://cdn.instructables.com/FQ0/5CRC/HIEZY2F6/FQ05CRCHIEZY2F6.SMALL.jpg ehamilton-smith A few years ago I had the misfortune of losing the stand for my 32" Sharp LCD TV. It was while I had the TV mounted on the wall of my apartment, and kept the stand in the TV box, stored in my apartment building's storage room for safe-keeping—or so I thought. When I eventually moved into another ap...
By: ehamilton-smith

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Thu, 27 Jun 2013 15:12:15 PDT
ECG Simulator http://www.instructables.com/id/ECG-Simulator/
ECG Simulator - More DIY How To Projects]]> http://cdn.instructables.com/FXW/HJPB/HCV928UE/FXWHJPBHCV928UE.SQUARE2.jpg http://cdn.instructables.com/FXW/HJPB/HCV928UE/FXWHJPBHCV928UE.SQUARE.jpg http://cdn.instructables.com/FXW/HJPB/HCV928UE/FXWHJPBHCV928UE.SMALL.jpg lynchzilla This instructable describes in detail the steps required to create an Arduino-based ECG simulator. An ECG simulator replicates the cardiac waveform that can be measured by attaching three electrodes (RA, LA, RL) to the patient's chest. This ECG signal is only a few millivolts in amplitude. The finis...
By: lynchzilla

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Sat, 2 Mar 2013 10:04:46 PST
Reverse polarity protection for your circuit, without the diode voltage drop. http://www.instructables.com/id/Reverse-polarity-protection-for-your-circuit-with/
Reverse polarity protection for your circuit, without the diode voltage drop. - More DIY How To Projects]]> http://cdn.instructables.com/FCG/BL3C/H4AGIRJL/FCGBL3CH4AGIRJL.SQUARE2.jpg http://cdn.instructables.com/FCG/BL3C/H4AGIRJL/FCGBL3CH4AGIRJL.SQUARE.jpg http://cdn.instructables.com/FCG/BL3C/H4AGIRJL/FCGBL3CH4AGIRJL.SMALL.jpg ccrome Ever blow up a circuit because you reversed the polarity of a battery?  Or got one of those pesky center-negative AC power bricks?  Or even carefully connected your circuit to a bench supply, and still got the leads reversed? Well, I have.  It can ruin your day.   The easiest way to protect your s...
By: ccrome

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Tue, 10 Jul 2012 08:32:28 PDT
AC to DC Conversion http://www.instructables.com/id/AC-to-DC-Conversion/
AC to DC Conversion - More DIY How To Projects]]> http://cdn.instructables.com/FCH/4OHQ/HX504N4Z/FCH4OHQHX504N4Z.SQUARE2.jpg http://cdn.instructables.com/FCH/4OHQ/HX504N4Z/FCH4OHQHX504N4Z.SQUARE.jpg http://cdn.instructables.com/FCH/4OHQ/HX504N4Z/FCH4OHQHX504N4Z.SMALL.jpg brmarcum Every once in a while I come up with an idea for a circuit or device that has applications where a battery may not be the best or most convenient option for a power supply. One example is the Motion Activated AC Switch that I built. Since I was wanting to have the switch open a relay to allow AC cur...
By: brmarcum

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Tue, 1 Jul 2014 14:24:04 PDT
Control ESP8266 over the internet (from anywhere) http://www.instructables.com/id/Control-ESP8266-Over-the-Internet-from-Anywhere/
Control ESP8266 over the internet (from anywhere) - More DIY How To Projects]]> http://cdn.instructables.com/FCD/O3F6/IN0TLRX0/FCDO3F6IN0TLRX0.SQUARE2.jpg http://cdn.instructables.com/FCD/O3F6/IN0TLRX0/FCDO3F6IN0TLRX0.SQUARE.jpg http://cdn.instructables.com/FCD/O3F6/IN0TLRX0/FCDO3F6IN0TLRX0.SMALL.jpg CrtSuznik There are but a few things better than (succesfully) programming and using your Arduino. Surely one of those things is using your ESP8266 as an Arduino with WiFi!In this instructable I will show you an EASY way to get the ESP8266 working as a web server AND accessing that server from anywhere (over ...
By: CrtSuznik

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Sun, 17 Apr 2016 07:52:19 PDT
Basic 555 Timer LED Flasher Circuit http://www.instructables.com/id/Basic-555-Timer-LED-Flasher-Circuit/
Basic 555 Timer LED Flasher Circuit - More DIY How To Projects]]> http://cdn.instructables.com/F84/ORHJ/HL5EMEDU/F84ORHJHL5EMEDU.SQUARE2.jpg http://cdn.instructables.com/F84/ORHJ/HL5EMEDU/F84ORHJHL5EMEDU.SQUARE.jpg http://cdn.instructables.com/F84/ORHJ/HL5EMEDU/F84ORHJHL5EMEDU.SMALL.jpg concoctory From our build night sponsored by Jameco, this is a fairly basic and common 555 LED Flasher Circuit. Component values may be different but the basic function of a 555 IC is as an oscillator. Required Componenets 1 - 555 Timer IC 2 - 1kohm Resistors 1 - 470kohm Resistor 1 - LED of ...
By: concoctory

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Thu, 12 Sep 2013 20:59:21 PDT
Ultra-Sensitive Spy Ear http://www.instructables.com/id/Ultra-Sensitive-Spy-Ear/
Ultra-Sensitive Spy Ear - More DIY How To Projects]]> http://cdn.instructables.com/FVY/2JEO/GWKKMNLS/FVY2JEOGWKKMNLS.SQUARE2.jpg http://cdn.instructables.com/FVY/2JEO/GWKKMNLS/FVY2JEOGWKKMNLS.SQUARE.jpg http://cdn.instructables.com/FVY/2JEO/GWKKMNLS/FVY2JEOGWKKMNLS.SMALL.jpg ernie666 Have you ever tried to listen to a conversation on the other side of the wall? Or perhaps one across the street? Well, now you can!**An interesting observation: The other day I was using this device to listen to mechanical movements inside a machine. While the machine wasn't moving, I began to hear ...
By: ernie666

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Tue, 13 Mar 2012 01:10:38 PDT
Quick Connect Circuits http://www.instructables.com/id/Quick-Connect-Circuits/
Quick Connect Circuits - More DIY How To Projects]]> http://cdn.instructables.com/FQ1/GITF/IMWBCNGG/FQ1GITFIMWBCNGG.SQUARE2.jpg http://cdn.instructables.com/FQ1/GITF/IMWBCNGG/FQ1GITFIMWBCNGG.SQUARE.jpg http://cdn.instructables.com/FQ1/GITF/IMWBCNGG/FQ1GITFIMWBCNGG.SMALL.jpg StumpChunkman I was working on making a collaborative board game where people would build circuits. It went through many revisions, saw many rule changes, and made it pretty far in development. Sadly, difficulties with certain aspects of the rules, and other projects requiring my attention at the time kept me fro...
By: StumpChunkman

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Mon, 11 Apr 2016 21:21:31 PDT
Make A Flashlight! http://www.instructables.com/id/Make-A-Flashlight!/
Make A Flashlight! - More DIY How To Projects]]> http://cdn.instructables.com/F0P/LNB5/F9052FID/F0PLNB5F9052FID.SQUARE2.jpg http://cdn.instructables.com/F0P/LNB5/F9052FID/F0PLNB5F9052FID.SQUARE.jpg http://cdn.instructables.com/F0P/LNB5/F9052FID/F0PLNB5F9052FID.SMALL.jpg majjck In this instructable, I will show you how to make a very basic, simple, working flashlight! Gather Materials -2 AA Batteries -Twisted piece of Alluminum foil (or copper wire) -duct tape -1 mini light bulb. (Home Depot or other hardware store) Assembly (Battery 1) Rip 2 pieces of foil about 1....
By: majjck

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Wed, 21 Nov 2007 18:41:47 PST
DIY 2k(2560x1440) LED beam projector http://www.instructables.com/id/DIY-2k2560x1440-Beam-Projector/
DIY 2k(2560x1440) LED beam projector - More DIY How To Projects]]> http://cdn.instructables.com/FFU/OFSG/IN1YV4JM/FFUOFSGIN1YV4JM.SQUARE2.jpg http://cdn.instructables.com/FFU/OFSG/IN1YV4JM/FFUOFSGIN1YV4JM.SQUARE.jpg http://cdn.instructables.com/FFU/OFSG/IN1YV4JM/FFUOFSGIN1YV4JM.SMALL.jpg bumhee34 This instruction explains how to make a DIY 2k resolution (2560x1440) beam projector.The original posts are in my blogger (link1 & link2) in poor English, and in my Korean blog.Many necessary stuffs were from China, and I am lucky to get those stuffs easily here in Korea.You can use "aliexpress.com"...
By: bumhee34

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Fri, 15 Apr 2016 10:58:15 PDT
Electronics made easy http://www.instructables.com/id/Electronics-made-easy/
Electronics made easy - More DIY How To Projects]]> http://cdn.instructables.com/F4G/IUU1/GB3XKI0V/F4GIUU1GB3XKI0V.SQUARE2.jpg http://cdn.instructables.com/F4G/IUU1/GB3XKI0V/F4GIUU1GB3XKI0V.SQUARE.jpg http://cdn.instructables.com/F4G/IUU1/GB3XKI0V/F4GIUU1GB3XKI0V.SMALL.jpg A-Nony-Mus So I have seen a lot of people asking where is a good place to learn about electronics. I think it is about time that someone made an instructable about it. In this instructable I will cover some of the main electronics components, their uses and what they look like in schematics. I would like to re...
By: A-Nony-Mus

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Thu, 15 Jul 2010 06:51:05 PDT
Level Shifting Between TTL and CMOS http://www.instructables.com/id/Level-Shifting-Between-TTL-and-CMOS/
Level Shifting Between TTL and CMOS - More DIY How To Projects]]> http://cdn.instructables.com/F47/2YK7/GFA45WNX/F472YK7GFA45WNX.SQUARE2.jpg http://cdn.instructables.com/F47/2YK7/GFA45WNX/F472YK7GFA45WNX.SQUARE.jpg http://cdn.instructables.com/F47/2YK7/GFA45WNX/F472YK7GFA45WNX.SMALL.jpg nevdull There are two lines, called logic families,of analog IC's and while they can generally be interoperable "off the shelf," they work best with ICs of the same family and sometimes IC's of mixed logic families can require a voltage translation to get working correctly.  Often, though, our designs will ...
By: nevdull

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Sat, 30 Oct 2010 20:55:59 PDT
How to find the primary and the secondary coils of a FlyBack transformer http://www.instructables.com/id/How-to-find-the-primary-and-the-secondary-coils-of/
How to find the primary and the secondary coils of a FlyBack transformer - More DIY How To Projects]]> http://cdn.instructables.com/FZM/VIXT/GI0TIL7Q/FZMVIXTGI0TIL7Q.SQUARE2.jpg http://cdn.instructables.com/FZM/VIXT/GI0TIL7Q/FZMVIXTGI0TIL7Q.SQUARE.jpg http://cdn.instructables.com/FZM/VIXT/GI0TIL7Q/FZMVIXTGI0TIL7Q.SMALL.jpg Jimmy Proton The main problem, in most cases, is that you don't know the pinout diagram of a flyback transformer. So, I shall try to give you a simple method to find the primary coil input pins and also the 0 V output pin of the HV secondary coil. -=I do not take full credit for this=- How to find the 0 V pin...
By: Jimmy Proton

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Thu, 23 Dec 2010 21:54:47 PST
Over the air tv antenna amp. http://www.instructables.com/id/Over-the-air-tv-antenna-amp/
Over the air tv antenna amp. - More DIY How To Projects]]> http://cdn.instructables.com/FE0/8X4X/H01N5TJ6/FE08X4XH01N5TJ6.SQUARE2.jpg http://cdn.instructables.com/FE0/8X4X/H01N5TJ6/FE08X4XH01N5TJ6.SQUARE.jpg http://cdn.instructables.com/FE0/8X4X/H01N5TJ6/FE08X4XH01N5TJ6.SMALL.jpg Computothought Wanted to give our over the air TV antennas a little boost. Came across this circuit to see if it would work. Ihave already done several instructables about antennas, though it would be nice to something a little different. Antenna instructables: http://www.instructables.com/id/Antennas-TV-Wifi-and...
By: Computothought

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Thu, 22 Mar 2012 17:58:25 PDT
How to Build & Use A Dye-Sensitized Solar Cell (DSSC) + A Discussion on Energy & Efficiency http://www.instructables.com/id/How-to-Build-Use-A-Dye-Sensitized-Solar-Cell-DS/
How to Build & Use A Dye-Sensitized Solar Cell (DSSC) + A Discussion on Energy & Efficiency - More DIY How To Projects]]> http://cdn.instructables.com/F8U/U2IO/HCB8Q4TA/F8UU2IOHCB8Q4TA.SQUARE2.jpg http://cdn.instructables.com/F8U/U2IO/HCB8Q4TA/F8UU2IOHCB8Q4TA.SQUARE.jpg http://cdn.instructables.com/F8U/U2IO/HCB8Q4TA/F8UU2IOHCB8Q4TA.SMALL.jpg dkeith95 Harnessing renewable energy sources is crucial for supporting the energy demands of modern society. The IEA calculated that global energy usage increased by 10% from 1990 to 2008, and the number is expected to rise in the coming decades. At the same time, our currently predominant sources of energy ...
By: dkeith95

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Sun, 3 Mar 2013 21:30:28 PST
Ramps 1.4 DIY SMD Pick and Place http://www.instructables.com/id/Ramps-14-DIY-SMD-Pick-and-Place/
Ramps 1.4 DIY SMD Pick and Place - More DIY How To Projects]]> http://cdn.instructables.com/FNP/UVXC/I48C7E8T/FNPUVXCI48C7E8T.SQUARE2.jpg http://cdn.instructables.com/FNP/UVXC/I48C7E8T/FNPUVXCI48C7E8T.SQUARE.jpg http://cdn.instructables.com/FNP/UVXC/I48C7E8T/FNPUVXCI48C7E8T.SMALL.jpg daviddein ForewordLast Update: January 11, 2016Status: Indefinitely suspended.All files have been uploaded that I have on hand. I accidentally overwritten the laptops linux OS with a new version and wiped all the working files I had for the machine. I will leave this up to provide motivation for others, but ...
By: daviddein

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Sun, 28 Dec 2014 08:01:22 PST
How to Assemble a Printed Circuit Board (PCB) http://www.instructables.com/id/How-to-Assemble-a-Printed-Circuit-Board-PCB/
How to Assemble a Printed Circuit Board (PCB) - More DIY How To Projects]]> http://cdn.instructables.com/FUR/1VLJ/H5JVXAO1/FUR1VLJH5JVXAO1.SQUARE2.jpg http://cdn.instructables.com/FUR/1VLJ/H5JVXAO1/FUR1VLJH5JVXAO1.SQUARE.jpg http://cdn.instructables.com/FUR/1VLJ/H5JVXAO1/FUR1VLJH5JVXAO1.SMALL.jpg nkiegrea How to assemble a PCB by hand intro: Printed circuit boards or PCBs are at the heart of modern electronic equipment. Without them many of the electronics we use would be impossible to build. Computers, cell phones, TVs, Blu-ray players and such would not exist. The first PCBs, actually called printe...
By: nkiegrea

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Wed, 8 Aug 2012 12:10:18 PDT
High-Range Wireless Power http://www.instructables.com/id/High-Range-Wireless-Power/
High-Range Wireless Power - More DIY How To Projects]]> http://cdn.instructables.com/FSP/W7IW/IMRYHDAG/FSPW7IWIMRYHDAG.SQUARE2.jpg http://cdn.instructables.com/FSP/W7IW/IMRYHDAG/FSPW7IWIMRYHDAG.SQUARE.jpg http://cdn.instructables.com/FSP/W7IW/IMRYHDAG/FSPW7IWIMRYHDAG.SMALL.jpg Mei-MeiC Build a Wireless Power Transmission system that can power a light bulb or charge a phone from up to 2 feet away! This uses a resonant coil system to send magnetic fields from a transmitting coil to a receiving coil. We used this as a demo during a sermon on Maxwell's Four Great Equations at our ch...
By: Mei-MeiC

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Sat, 9 Apr 2016 20:12:17 PDT
Bone Conducting Earphones http://www.instructables.com/id/Bone-Conducting-Earphones/
Bone Conducting Earphones - More DIY How To Projects]]> http://cdn.instructables.com/F0S/8BN4/GZHJVLV0/F0S8BN4GZHJVLV0.SQUARE2.jpg http://cdn.instructables.com/F0S/8BN4/GZHJVLV0/F0S8BN4GZHJVLV0.SQUARE.jpg http://cdn.instructables.com/F0S/8BN4/GZHJVLV0/F0S8BN4GZHJVLV0.SMALL.jpg cakenggt Bone conduction is the ability to hear sounds by conducting the vibrations directly to your inner ear, bypassing the middle and outer ears. Through this process you can hear sounds underwater, with your ears closed, and while others are talking. Generally bone conducting earphones are fairly expensi...
By: cakenggt

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Wed, 7 Mar 2012 16:57:18 PST
DIY Invisible Fence battery http://www.instructables.com/id/DIY-Invisible-Fence-battery/
DIY Invisible Fence battery - More DIY How To Projects]]> http://cdn.instructables.com/FID/L4D7/UYZEP27VWL4/FIDL4D7UYZEP27VWL4.SQUARE2.jpg http://cdn.instructables.com/FID/L4D7/UYZEP27VWL4/FIDL4D7UYZEP27VWL4.SQUARE.jpg http://cdn.instructables.com/FID/L4D7/UYZEP27VWL4/FIDL4D7UYZEP27VWL4.SMALL.jpg Giant Invisible Fence pet containment systems require a new battery in the dog's collar every 3 months. Invisible Fence dealers sell battery packs for around $15. This expensive battery is a plastic case around a common CR1/3 lithium cell, readily available from any hardware or drugstore for less than $...
By: Giant

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Thu, 30 Mar 2006 14:39:41 PST
How to Make a Balun Or Unun http://www.instructables.com/id/How-to-Make-a-Balun-Or-Unun/
How to Make a Balun Or Unun - More DIY How To Projects]]> http://cdn.instructables.com/FHT/N61X/HRKR3EYX/FHTN61XHRKR3EYX.SQUARE2.jpg http://cdn.instructables.com/FHT/N61X/HRKR3EYX/FHTN61XHRKR3EYX.SQUARE.jpg http://cdn.instructables.com/FHT/N61X/HRKR3EYX/FHTN61XHRKR3EYX.SMALL.jpg rjkorn I needed a simple portable HF antenna. A long wire and some insulators is pretty easy to carry. To connect it to the radio I needed a Balun.These are such simple things but yet they cost so much from some places. I decided to make my own and did it for less than $5. A Balun is used to match a bala...
By: rjkorn

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Sat, 15 Feb 2014 07:23:49 PST
How to Make a Voltage-Controlled Oscillator http://www.instructables.com/id/How-to-Make-a-Voltage-Controlled-Oscillator/
How to Make a Voltage-Controlled Oscillator - More DIY How To Projects]]> http://cdn.instructables.com/F95/8F35/HFSHV36G/F958F35HFSHV36G.SQUARE2.jpg http://cdn.instructables.com/F95/8F35/HFSHV36G/F958F35HFSHV36G.SQUARE.jpg http://cdn.instructables.com/F95/8F35/HFSHV36G/F958F35HFSHV36G.SMALL.jpg SelkeyMoonbeam The objective of this Instructable is to show you one method of turning DC values, such as those from a thermometer, pH sensor, or pressure sensor into a frequency which can be used to send information over the microphone band of an audio jack to a smartphone. We assumed an input DC voltage as our ...
By: SelkeyMoonbeam

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Tue, 7 May 2013 16:16:54 PDT
Gaming With Thoughts/Mindwaves (w/ Arduino) http://www.instructables.com/id/Gaming-With-ThoughtsMindwaves-w-Arduino/
Gaming With Thoughts/Mindwaves (w/ Arduino) - More DIY How To Projects]]> http://cdn.instructables.com/FME/XG39/IMGJ8X1O/FMEXG39IMGJ8X1O.SQUARE2.jpg http://cdn.instructables.com/FME/XG39/IMGJ8X1O/FMEXG39IMGJ8X1O.SQUARE.jpg http://cdn.instructables.com/FME/XG39/IMGJ8X1O/FMEXG39IMGJ8X1O.SMALL.jpg Imetomi What do you think why we like videogames? The answer isn't hard: the videogames shows us new, extremly good challanges. I play videogames rarely, but my favorites are car racing and open world games just like Need for Speed and Grand Theft Auto series. Yes, these games are intrerestings, but after o...
By: Imetomi

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Thu, 31 Mar 2016 10:26:21 PDT
Fantastic Double Sided PCBs at home using photoresist method http://www.instructables.com/id/Fantastic-Double-Sided-PCBs-at-home-using-photores/
Fantastic Double Sided PCBs at home using photoresist method - More DIY How To Projects]]> http://cdn.instructables.com/FPQ/YLA1/GJPJLJ9L/FPQYLA1GJPJLJ9L.SQUARE2.jpg http://cdn.instructables.com/FPQ/YLA1/GJPJLJ9L/FPQYLA1GJPJLJ9L.SQUARE.jpg http://cdn.instructables.com/FPQ/YLA1/GJPJLJ9L/FPQYLA1GJPJLJ9L.SMALL.jpg fluxuss    As a hobbyist I always want to have my pcb in a professional way with 10thou trace to trace distance, double side and error free traces. Of course that was "nearly " impossible to make this kind of pcbs using toner transfer methods at home. I have tried toner transfer method ,Press N peel paper ...
By: fluxuss

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Thu, 3 Feb 2011 14:41:29 PST
The Introduction of XL6009 Step-up Power Module DC-DC Converter http://www.instructables.com/id/The-Introduction-of-XL6009-Step-up-Power-Module-DC/
The Introduction of XL6009 Step-up Power Module DC-DC Converter - More DIY How To Projects]]> http://cdn.instructables.com/FC3/0UR8/HQCPML31/FC30UR8HQCPML31.SQUARE2.jpg http://cdn.instructables.com/FC3/0UR8/HQCPML31/FC30UR8HQCPML31.SQUARE.jpg http://cdn.instructables.com/FC3/0UR8/HQCPML31/FC30UR8HQCPML31.SMALL.jpg ICStation ICStation team have developed this new product-XL6009 Step-up Power Module recently.We share the knowledge of this product in details and show you the actual testing results with the digital storage oscilloscope.You could find the information about applicable occasion, feature,function,diagram, and ...
By: ICStation

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Sun, 12 Jan 2014 22:57:03 PST
Automatic Led Stairs Controller http://www.instructables.com/id/Automatic-Led-Stairs-Controller/
Automatic Led Stairs Controller - More DIY How To Projects]]> http://cdn.instructables.com/F4B/XSYF/GWPPXUBB/F4BXSYFGWPPXUBB.SQUARE2.jpg http://cdn.instructables.com/F4B/XSYF/GWPPXUBB/F4BXSYFGWPPXUBB.SQUARE.jpg http://cdn.instructables.com/F4B/XSYF/GWPPXUBB/F4BXSYFGWPPXUBB.SMALL.jpg ipf_group This instruction is how I assembled my Automatic Led Stairs Controller.   What Is a LED stairs controller? The video shows how it works! Begin The idea Many of you have already seen such controllers and a lot of people assembled something similar to it, but I will show you my version. T...
By: ipf_group

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Wed, 28 Dec 2011 08:47:33 PST
How to Make a Cheap iPhone Speaker http://www.instructables.com/id/How-to-Make-a-Cheap-iPhone-Speaker/
How to Make a Cheap iPhone Speaker - More DIY How To Projects]]> http://cdn.instructables.com/FFV/TNJV/HMC53LFO/FFVTNJVHMC53LFO.SQUARE2.jpg http://cdn.instructables.com/FFV/TNJV/HMC53LFO/FFVTNJVHMC53LFO.SQUARE.jpg http://cdn.instructables.com/FFV/TNJV/HMC53LFO/FFVTNJVHMC53LFO.SMALL.jpg mobryant90 A great way to enjoy your music when you're short on money. Find an Empty Toilet Paper Roll Make an Incision Near the Center of the Roll Using a knife, make an incision near the center of the roll that is large enough to fit scissors. Cut Out a Hole for Your Phone This step is easiest wit...
By: mobryant90

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Thu, 3 Oct 2013 22:10:15 PDT
Spiderman web shooter/wrist mounted coil gun http://www.instructables.com/id/Spiderman-web-shooterwrist-mounted-coil-gun/
Spiderman web shooter/wrist mounted coil gun - More DIY How To Projects]]> http://cdn.instructables.com/FIP/BWM2/I1KJN9PJ/FIPBWM2I1KJN9PJ.SQUARE2.jpg http://cdn.instructables.com/FIP/BWM2/I1KJN9PJ/FIPBWM2I1KJN9PJ.SQUARE.jpg http://cdn.instructables.com/FIP/BWM2/I1KJN9PJ/FIPBWM2I1KJN9PJ.SMALL.jpg Himers Today I am going to show you how to make a spiderman web shooter. Basically this is very simple coil gun. I wached the movie "The Amazing Spiderman" and I thought I need to make one of those, but because I can't make a real one that I could use to swing from building to building I decided to make a ...
By: Himers

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Thu, 23 Oct 2014 11:09:15 PDT
Tiny 80Watt Electric Heater http://www.instructables.com/id/Tiny-80Watt-Electric-Heater/
Tiny 80Watt Electric Heater - More DIY How To Projects]]> http://cdn.instructables.com/FRW/KWLC/IMCB61OM/FRWKWLCIMCB61OM.SQUARE2.jpg http://cdn.instructables.com/FRW/KWLC/IMCB61OM/FRWKWLCIMCB61OM.SQUARE.jpg http://cdn.instructables.com/FRW/KWLC/IMCB61OM/FRWKWLCIMCB61OM.SMALL.jpg Ynze- In this Instructable I'll show you how to make a small electric heater that works on 12volts and gives 80Watts of power.It gives a nice little really warm breeze and will keep your hands warm.I came up with the design myself. Parts And Tools The parts you will need:4x4x1cm 12volt computer fan Som...
By: Ynze-

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Tue, 29 Mar 2016 06:43:32 PDT
Small Triac Switch http://www.instructables.com/id/Small-Triac-Switch/
Small Triac Switch - More DIY How To Projects]]> http://cdn.instructables.com/FF2/SU37/H8CVG64V/FF2SU37H8CVG64V.SQUARE2.jpg http://cdn.instructables.com/FF2/SU37/H8CVG64V/FF2SU37H8CVG64V.SQUARE.jpg http://cdn.instructables.com/FF2/SU37/H8CVG64V/FF2SU37H8CVG64V.SMALL.jpg diy_bloke In order to switch some floodlights by my Arduino, the small switch circuits I built around a 39mf22 were just not man enough to handle the current needed, so I decided to build a switch with discrete components around a TRIAC. Now these circuits are very easy and come a dime a dozen on the interne...
By: diy_bloke

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Thu, 25 Oct 2012 17:19:23 PDT
Make the simplest adjustable power supply in 10-15 minutes! http://www.instructables.com/id/Make-the-simplest-adjustable-power-supply-in-10-15/
Make the simplest adjustable power supply in 10-15 minutes! - More DIY How To Projects]]> http://cdn.instructables.com/F5J/JYNU/HF23PS2T/F5JJYNUHF23PS2T.SQUARE2.jpg http://cdn.instructables.com/F5J/JYNU/HF23PS2T/F5JJYNUHF23PS2T.SQUARE.jpg http://cdn.instructables.com/F5J/JYNU/HF23PS2T/F5JJYNUHF23PS2T.SMALL.jpg benco916 For about $5-$10 you can have your own adjustable power supply to power various electronics! The 3 "main" parts you will need 1 - LM317 (I used LM338, however any adjustable regulator with "LM" in it should work fine) 1 - 5k ohm variable resistor (potentiometer) 1 - 220-240 ohm resistor Identif...
By: benco916

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Tue, 2 Apr 2013 16:20:30 PDT
How to make a Mobile Charger http://www.instructables.com/id/How-to-Make-a-Mobile-Charger/
How to make a Mobile Charger - More DIY How To Projects]]> http://cdn.instructables.com/FTH/RN8E/IM9E42FT/FTHRN8EIM9E42FT.SQUARE2.jpg http://cdn.instructables.com/FTH/RN8E/IM9E42FT/FTHRN8EIM9E42FT.SQUARE.jpg http://cdn.instructables.com/FTH/RN8E/IM9E42FT/FTHRN8EIM9E42FT.SMALL.jpg Techgenie Don't have a mobile phone charger and the battery is about to drain..? Make an Emergency Charger yourself at home to charge your device from nothing but a 9v Battery. This video shows a simple way to learn how to make a mobile phone charger at home very easily. Note: A normal zinc carbon ...
By: Techgenie

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Sun, 27 Mar 2016 05:22:44 PDT
Reverse Engineering an Electric Fence Charger http://www.instructables.com/id/Reverse-Engineering-an-Electric-Fence-Charger/
Reverse Engineering an Electric Fence Charger - More DIY How To Projects]]> http://cdn.instructables.com/F68/5WLO/H0E0MQGK/F685WLOH0E0MQGK.SQUARE2.jpg http://cdn.instructables.com/F68/5WLO/H0E0MQGK/F685WLOH0E0MQGK.SQUARE.jpg http://cdn.instructables.com/F68/5WLO/H0E0MQGK/F685WLOH0E0MQGK.SMALL.jpg LargeMouthBass Reverse engineering something can be a great form of both entertainment and education.  I’ve often purchased items just for the satisfaction of disassembling them to determine how they function and how they are designed.  Along the way you can learn a great deal, improving your own design and debugg...
By: LargeMouthBass

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Mon, 2 Apr 2012 10:56:00 PDT
Reading Surface Mount Resistor codes http://www.instructables.com/id/Reading-Surface-Mount-Resistor-codes/
Reading Surface Mount Resistor codes - More DIY How To Projects]]> http://cdn.instructables.com/FM9/00AO/H4AGJC99/FM900AOH4AGJC99.SQUARE2.jpg http://cdn.instructables.com/FM9/00AO/H4AGJC99/FM900AOH4AGJC99.SQUARE.jpg http://cdn.instructables.com/FM9/00AO/H4AGJC99/FM900AOH4AGJC99.SMALL.jpg ColorBomb Unlike Through hole resisors which use colored bands to determine the value, surface mount resistor have numbers and sometimes letters. I will teach you how to take those letters and digits and determine the value. Looking at the image you see 4 resistors, the first being 391  the seconed 270 and t...
By: ColorBomb

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Fri, 13 Jul 2012 07:30:43 PDT
Use the Force... Or your Brainwaves? (multifuctional thought controlled system) http://www.instructables.com/id/Use-the-Force-or-Your-Brainwaves-multifuctional-Th/
Use the Force... Or your Brainwaves? (multifuctional thought controlled system) - More DIY How To Projects]]> http://cdn.instructables.com/FP6/WME2/ILWJ6F3B/FP6WME2ILWJ6F3B.SQUARE2.jpg http://cdn.instructables.com/FP6/WME2/ILWJ6F3B/FP6WME2ILWJ6F3B.SQUARE.jpg http://cdn.instructables.com/FP6/WME2/ILWJ6F3B/FP6WME2ILWJ6F3B.SMALL.jpg Imetomi As a kid I always wanted to have a special ability, like moving objects with thoughts or flying. I tried to move objects with “the power of my mind” of course with no success. Well, yes, I was and I am a huge Star Wars fan, but I also like electronics and programming, so why not combine these two th...
By: Imetomi

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Sat, 19 Mar 2016 23:16:25 PDT
How to recover components from old or broken electronics without a soldering iron! http://www.instructables.com/id/How-to-Recover-Components-From-Old-or-Broken-Elect/
How to recover components from old or broken electronics without a soldering iron! - More DIY How To Projects]]> http://cdn.instructables.com/F1W/ZEGF/IM28WQN3/F1WZEGFIM28WQN3.SQUARE2.jpg http://cdn.instructables.com/F1W/ZEGF/IM28WQN3/F1WZEGFIM28WQN3.SQUARE.jpg http://cdn.instructables.com/F1W/ZEGF/IM28WQN3/F1WZEGFIM28WQN3.SMALL.jpg JacobM75 I recommend that you read through these instructions at least once before actually beginning work due to a number of saftey concerns and possible pitfalls you may encounter which are addressed throughout.Objective:In this guide I will be showing a simple method for recovering various kinds of useful...
By: JacobM75

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Mon, 21 Mar 2016 16:20:41 PDT
Connecting an LCD Screen and an Ultrasonic Distance Sensor to an Arduino http://www.instructables.com/id/Connecting-an-LCD-Screen-and-an-Ultrasonic-Distanc/
Connecting an LCD Screen and an Ultrasonic Distance Sensor to an Arduino - More DIY How To Projects]]> http://cdn.instructables.com/F28/F6UO/I0DOGJP9/F28F6UOI0DOGJP9.SQUARE2.jpg http://cdn.instructables.com/F28/F6UO/I0DOGJP9/F28F6UOI0DOGJP9.SQUARE.jpg http://cdn.instructables.com/F28/F6UO/I0DOGJP9/F28F6UOI0DOGJP9.SMALL.jpg ohoilett When I first started playing with Arduinos, this was the first little set up I created. The video orientation is a little poor. This was my first go at things so I apologize that I was not up to snuff back then. Anyway, very simple set up. What we are doing is using an ultrasonic distance sensor to ...
By: ohoilett

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Mon, 22 Sep 2014 20:56:35 PDT
Making a beefy Peltier cooler! http://www.instructables.com/id/Making-a-Beefy-Peltier-Cooler/
Making a beefy Peltier cooler! - More DIY How To Projects]]> http://cdn.instructables.com/FID/EN4L/ILZG4M3U/FIDEN4LILZG4M3U.SQUARE2.jpg http://cdn.instructables.com/FID/EN4L/ILZG4M3U/FIDEN4LILZG4M3U.SQUARE.jpg http://cdn.instructables.com/FID/EN4L/ILZG4M3U/FIDEN4LILZG4M3U.SMALL.jpg Mjtrinihobby I wanted to make a more efficient cooling element for my electrically powered cooler so I went ahead and ordered the necessary parts from Amazon.com. Heatpipe heatsinks are really good at cooling CPUs (those 2 pictured can handle 160Watt TPD easily) so they are perfect for cooling 40mm Peltier chips...
By: Mjtrinihobby

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Sun, 20 Mar 2016 14:49:36 PDT