Instructables: exploring - technology - battery http://www.instructables.com Sun, 20 Apr 2014 06:55:24 PDT BLOX v1.01 Rebuild Your Ryobi ONE+ Battery Pack http://www.instructables.com/id/Rebuild-Your-Ryobi-ONE-Battery-Pack/
Rebuild Your Ryobi ONE+ Battery Pack - More DIY How To Projects]]> http://cdn.instructables.com/FKY/KUXC/HU54MH0U/FKYKUXCHU54MH0U.SQUARE2.jpg http://cdn.instructables.com/FKY/KUXC/HU54MH0U/FKYKUXCHU54MH0U.SQUARE.jpg http://cdn.instructables.com/FKY/KUXC/HU54MH0U/FKYKUXCHU54MH0U.SMALL.jpg Marsh I've had my Ryobi ONE+ system for over five years now and the batteries are shot. Let's see what it takes to rebuild one. Tools Needed ScrewdriverWire cutterSoldering ironSolder Take It Apart Remove six screws from the bottom. Pull the black and orange sections apart. Identify The Cells Rem...
By: Marsh

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Fri, 18 Apr 2014 07:46:43 PDT
How to Replace Old Computer Batteries http://www.instructables.com/id/How-to-Replace-Old-Computer-Batteries/
How to Replace Old Computer Batteries - More DIY How To Projects]]> http://cdn.instructables.com/F61/BR66/HU1RW9MP/F61BR66HU1RW9MP.SQUARE2.jpg http://cdn.instructables.com/F61/BR66/HU1RW9MP/F61BR66HU1RW9MP.SQUARE.jpg http://cdn.instructables.com/F61/BR66/HU1RW9MP/F61BR66HU1RW9MP.SMALL.jpg Chuck Brown 14 Tried of replacing your batteries every 2 years for you laptop? Now you can change your batteries in your laptop so you will not have to spend $100 on a new battery Start Disconnect the battery from your laptop. There will be 2 tabs on each side of the battery, just slide them to the side and pul...
By: Chuck Brown 14

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Wed, 16 Apr 2014 11:00:11 PDT
Make A Cheap Lithium Battery Pack http://www.instructables.com/id/Make-A-Cheap-Lithium-Battery-Pack/
Make A Cheap Lithium Battery Pack - More DIY How To Projects]]> http://cdn.instructables.com/FWY/NR2T/HU0GLSFQ/FWYNR2THU0GLSFQ.SQUARE2.jpg http://cdn.instructables.com/FWY/NR2T/HU0GLSFQ/FWYNR2THU0GLSFQ.SQUARE.jpg http://cdn.instructables.com/FWY/NR2T/HU0GLSFQ/FWYNR2THU0GLSFQ.SMALL.jpg ASCAS With some few hacking, you can turn your old phone battery into a powerful Lithium battery pack. This is a great alternative for the expensive Lithium-Polymer battery pack. These things work well with Arduinos, DIY robots, speakers or any project that requires a high current power source. What'...
By: ASCAS

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Mon, 14 Apr 2014 20:55:27 PDT
120 volt AC AA battery Charger http://www.instructables.com/id/120-volt-AC-AA-battery-Charger/
120 volt AC AA battery Charger - More DIY How To Projects]]> http://cdn.instructables.com/FJH/KLPX/HU0GPX1O/FJHKLPXHU0GPX1O.SQUARE2.jpg http://cdn.instructables.com/FJH/KLPX/HU0GPX1O/FJHKLPXHU0GPX1O.SQUARE.jpg http://cdn.instructables.com/FJH/KLPX/HU0GPX1O/FJHKLPXHU0GPX1O.SMALL.jpg kc8hps This charger is very unique in that it will charge all different types of AA ,C, D ,9 volt batteries depending on the battery holder that you select for the project. This project does not require the use of a step down transformer only one diode. This charger is even capable of charging alkaline ba...
By: kc8hps

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Mon, 14 Apr 2014 19:55:02 PDT
Augment Your Reality With The iTorch raspberry pi flashlight projector http://www.instructables.com/id/iTorch-raspberry-pi-flashlight-projector/
Augment Your Reality With The iTorch raspberry pi flashlight projector - More DIY How To Projects]]> http://cdn.instructables.com/F52/K12J/HTZY4C3F/F52K12JHTZY4C3F.SQUARE2.jpg http://cdn.instructables.com/F52/K12J/HTZY4C3F/F52K12JHTZY4C3F.SQUARE.jpg http://cdn.instructables.com/F52/K12J/HTZY4C3F/F52K12JHTZY4C3F.SMALL.jpg MrTravisHiggins UPDATE: Finally uploaded some videos, hope you like them. :) Post by ITorch Media Sharing. https://www.facebook.com/photo.php?v=292394047593097 iTorch Media Sharing Created By: Travis Higgins This Instructable is for a prototype homemade projector that can be illuminated by any decent LE...
By: MrTravisHiggins

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Mon, 14 Apr 2014 18:19:17 PDT
ARDUINO SOLAR CHARGE CONTROLLER (PWM) http://www.instructables.com/id/ARDUINO-SOLAR-CHARGE-CONTROLLER-PWM/
ARDUINO SOLAR CHARGE CONTROLLER (PWM) - More DIY How To Projects]]> http://cdn.instructables.com/FHE/R6DY/HTS5BNMP/FHER6DYHTS5BNMP.SQUARE2.jpg http://cdn.instructables.com/FHE/R6DY/HTS5BNMP/FHER6DYHTS5BNMP.SQUARE.jpg http://cdn.instructables.com/FHE/R6DY/HTS5BNMP/FHER6DYHTS5BNMP.SMALL.jpg deba168 In my previous instructables I described the details of energy monitoring of a off grid solar system.I have also won the 123D circuits competition for that.You can see this ARDUINO ENERGY METER. Please vote for me..... In solar power system, charge controller is the heart of the system which was...
By: deba168

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Wed, 9 Apr 2014 01:49:18 PDT
Custom Arduino Micro Quadcopter Concept http://www.instructables.com/id/Custom-Arduino-Micro-Quadrocopter-Concept/
Custom Arduino Micro Quadcopter Concept - More DIY How To Projects]]> http://cdn.instructables.com/FKL/74PS/HTK5ND84/FKL74PSHTK5ND84.SQUARE2.jpg http://cdn.instructables.com/FKL/74PS/HTK5ND84/FKL74PSHTK5ND84.SQUARE.jpg http://cdn.instructables.com/FKL/74PS/HTK5ND84/FKL74PSHTK5ND84.SMALL.jpg jackjackboom EDIT APRIL 14: Sorry guys for the late entry. life has been really hectic lately for me since we had to to replace a sewage pipe buried in the concrete slab our house sits on. But we have made some progress! code is somewhat coming along but it is the hardest part. We also redesigned the frame and n...
By: jackjackboom

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Wed, 2 Apr 2014 15:09:54 PDT
Custom Thermoplastic Battery Holder. http://www.instructables.com/id/Custom-Thermoplastic-Battery-Holder/
Custom Thermoplastic Battery Holder. - More DIY How To Projects]]> http://cdn.instructables.com/FKL/VCHG/HT9AS4GO/FKLVCHGHT9AS4GO.SQUARE2.jpg http://cdn.instructables.com/FKL/VCHG/HT9AS4GO/FKLVCHGHT9AS4GO.SQUARE.jpg http://cdn.instructables.com/FKL/VCHG/HT9AS4GO/FKLVCHGHT9AS4GO.SMALL.jpg zaphodd42 In the last few years, Thermoplastic has become popular in the maker community.  It is cheep, strong, easy to work with and provides a quick solution to prototyping.  It's known by it's brand names Polymorph, Shapelock, Instamorph and a few others. I recently used it to create a 9V battery holder be...
By: zaphodd42

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Mon, 31 Mar 2014 23:50:23 PDT
Rechargeable Bike Light with automatic switch of energy source http://www.instructables.com/id/Intro-70/
Rechargeable Bike Light with automatic switch of energy source - More DIY How To Projects]]> http://cdn.instructables.com/FTH/JMIB/HTIWIRHF/FTHJMIBHTIWIRHF.SQUARE2.jpg http://cdn.instructables.com/FTH/JMIB/HTIWIRHF/FTHJMIBHTIWIRHF.SQUARE.jpg http://cdn.instructables.com/FTH/JMIB/HTIWIRHF/FTHJMIBHTIWIRHF.SMALL.jpg Bumsfallera First of all, excuse my non-native English and my lack of professional electrical engineering skills. I see this as a hobby and have no claim to be perfect. However, if you have some ideas on how to improve the setting don’t hesitate to write a comment ;-) I haven’t seen any similar Instructabl...
By: Bumsfallera

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Mon, 31 Mar 2014 17:20:32 PDT
Mini line tracer http://www.instructables.com/id/Mini-line-tracer/
Mini line tracer - More DIY How To Projects]]> http://cdn.instructables.com/FUU/FW9D/HSJAPV6E/FUUFW9DHSJAPV6E.SQUARE2.jpg http://cdn.instructables.com/FUU/FW9D/HSJAPV6E/FUUFW9DHSJAPV6E.SQUARE.jpg http://cdn.instructables.com/FUU/FW9D/HSJAPV6E/FUUFW9DHSJAPV6E.SMALL.jpg pinomelean This is the story of how i made my first robot, and the instructions to build one yourself. It's a simple line tracer, controlled by two op-amps. No microcontroller, no programming... simple analog circuitry. I tried to make it as small as possible, using SMD components and tiny motors. I'm...
By: pinomelean

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Sun, 23 Mar 2014 07:27:18 PDT
Pocket-Sized Stereo With Built-In MP3 Player And Power Supply http://www.instructables.com/id/Pocket-Sized-Stereo-With-Built-In-MP3-Player-And-P/
Pocket-Sized Stereo With Built-In MP3 Player And Power Supply - More DIY How To Projects]]> http://cdn.instructables.com/FUJ/EM8K/HSPP5B7E/FUJEM8KHSPP5B7E.SQUARE2.jpg http://cdn.instructables.com/FUJ/EM8K/HSPP5B7E/FUJEM8KHSPP5B7E.SQUARE.jpg http://cdn.instructables.com/FUJ/EM8K/HSPP5B7E/FUJEM8KHSPP5B7E.SMALL.jpg ctx1985 I'm always trying to make a better, smaller mini stereo that fits comfortably in your pocket, but also puts out at least a half decent level of sound. This is my latest creation... It's a small tin that has not only a built-in amplifier and speakers, but also a 600mAh LiPo battery and USB 5v boost ...
By: ctx1985

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Fri, 21 Mar 2014 10:11:02 PDT
LED light beat to music http://www.instructables.com/id/LED-light-beat-to-music/
LED light beat to music - More DIY How To Projects]]> http://cdn.instructables.com/FPL/DZEH/HSXOCUII/FPLDZEHHSXOCUII.SQUARE2.jpg http://cdn.instructables.com/FPL/DZEH/HSXOCUII/FPLDZEHHSXOCUII.SQUARE.jpg http://cdn.instructables.com/FPL/DZEH/HSXOCUII/FPLDZEHHSXOCUII.SMALL.jpg wiscdoledino This project is taking a tip 31 transistor and hooking it up to a led light so that when plugged in will light up to the music that is playing. You'll need a audio spitter that you plug the light in one of the female ports and you audio source into the other female audio port. Then the male audio po...
By: wiscdoledino

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Thu, 20 Mar 2014 10:44:19 PDT
Industrial Electronics Case Speaker http://www.instructables.com/id/Industrial-Electronics-Case-Speaker/
Industrial Electronics Case Speaker - More DIY How To Projects]]> http://cdn.instructables.com/FAJ/UZKQ/HSVGDJMI/FAJUZKQHSVGDJMI.SQUARE2.jpg http://cdn.instructables.com/FAJ/UZKQ/HSVGDJMI/FAJUZKQHSVGDJMI.SQUARE.jpg http://cdn.instructables.com/FAJ/UZKQ/HSVGDJMI/FAJUZKQHSVGDJMI.SMALL.jpg RCS82 Are you in need of a good set of portable speakers? Are your current portable speakers missing a kick ass shoulder strap? Are ammo can speakers just not classy looking enough to take to your more fancy get togethers? Well you're in luck because you have found the Industrial Electronics Case Speaker....
By: RCS82

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Mon, 17 Mar 2014 18:35:01 PDT
The easiest symmetrical power supply http://www.instructables.com/id/The-easiest-symmetrical-power-supply/
The easiest symmetrical power supply - More DIY How To Projects]]> http://cdn.instructables.com/FX2/EGWJ/HSRZF2XE/FX2EGWJHSRZF2XE.SQUARE2.jpg http://cdn.instructables.com/FX2/EGWJ/HSRZF2XE/FX2EGWJHSRZF2XE.SQUARE.jpg http://cdn.instructables.com/FX2/EGWJ/HSRZF2XE/FX2EGWJHSRZF2XE.SMALL.jpg Szabolcs I show you how to make an easy symmetrical power supply for testing circuits where you need positive and negative voltage. like op amp circuits. For example, look at the 741 op amp. Part list: Two new 9V battery 9V battery clip OR another 9V battery (I will explain that later) Here is the "sche...
By: Szabolcs

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Sat, 15 Mar 2014 11:19:52 PDT
Li-ion Battery Indicator http://www.instructables.com/id/Li-ion-Battery-Indicator/ http://cdn.instructables.com/FTR/EYH9/HSRZM8V5/FTREYH9HSRZM8V5.SQUARE2.jpg http://cdn.instructables.com/FTR/EYH9/HSRZM8V5/FTREYH9HSRZM8V5.SQUARE.jpg http://cdn.instructables.com/FTR/EYH9/HSRZM8V5/FTREYH9HSRZM8V5.SMALL.jpg jumate Here is the single cell lion battery indicator. this indicator will show the status - low as red & usable voltage as green. This instructable can also compatible with 4V - 4.5V Lead Acid Batteries.
By: jumate

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Sat, 15 Mar 2014 04:31:18 PDT
Create your own mud battery / Bouw je eigen modderbatterij http://www.instructables.com/id/Create-your-own-mud-battery-Bouw-je-eigen-modderba/
Create your own mud battery / Bouw je eigen modderbatterij - More DIY How To Projects]]> http://cdn.instructables.com/F0F/0LOG/HSPP781Q/F0F0LOGHSPP781Q.SQUARE2.jpg http://cdn.instructables.com/F0F/0LOG/HSPP781Q/F0F0LOGHSPP781Q.SQUARE.jpg http://cdn.instructables.com/F0F/0LOG/HSPP781Q/F0F0LOGHSPP781Q.SMALL.jpg FabSchool What do need to build a mud battery? Scissors, mud, a bowl, electricity wires (preferably in two different colors), carbon fibre cloth, gloves, stripping pliers, a multimeter to measure the current and safety glasses, just to be sure. Je hebt nodig: schaar, modder, een schaaltje, elektriciteitsdrad...
By: FabSchool

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Fri, 14 Mar 2014 07:57:16 PDT
18650 Battery Charger, Transformed from Galaxy S Charging Cradle http://www.instructables.com/id/18650-Battery-Charger-Transformed-from-Galaxy-S-Ch/
18650 Battery Charger, Transformed from Galaxy S Charging Cradle - More DIY How To Projects]]> http://cdn.instructables.com/FM1/IVIK/HSQ4BL8M/FM1IVIKHSQ4BL8M.SQUARE2.jpg http://cdn.instructables.com/FM1/IVIK/HSQ4BL8M/FM1IVIKHSQ4BL8M.SQUARE.jpg http://cdn.instructables.com/FM1/IVIK/HSQ4BL8M/FM1IVIKHSQ4BL8M.SMALL.jpg wonstoneyoo It's a simple work to transform Smart Phone Charging Credle to a 18650 Li-Ion Battery Charger as following steps. 1. Remove label of the back side and unscrew 2 screws with Philips #1 Screw Driver. 2. Open the slicing cover and remove it - just apply force to untrck. 3. Cut away about 17mm of top h...
By: wonstoneyoo

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Thu, 13 Mar 2014 22:04:12 PDT
Building a Simple 9V LED Stoplight http://www.instructables.com/id/Building-a-Simple-9V-LED-Stoplight/
Building a Simple 9V LED Stoplight - More DIY How To Projects]]> http://cdn.instructables.com/FXF/UVEN/HSGFWFDR/FXFUVENHSGFWFDR.SQUARE2.jpg http://cdn.instructables.com/FXF/UVEN/HSGFWFDR/FXFUVENHSGFWFDR.SQUARE.jpg http://cdn.instructables.com/FXF/UVEN/HSGFWFDR/FXFUVENHSGFWFDR.SMALL.jpg schulzecd These instructions will show you how to build your own LED stoplight powered by a 9 volt battery. This LED Stoplight is a fairly simple, cheap project that can teach you about some simple, but very useful electronic components including the 4017 Decade Counter, the 555 Timer IC, and diodes. You...
By: schulzecd

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Fri, 7 Mar 2014 14:48:54 PST
Restoring/Recharging over-discharged LiPo (Lithium Polymer) batteries! http://www.instructables.com/id/Restoring-over-discharged-LiPo-Lithium-Polymer-bat/
Restoring/Recharging over-discharged LiPo (Lithium Polymer) batteries! - More DIY How To Projects]]> http://cdn.instructables.com/F7J/6KKS/HSE95FP0/F7J6KKSHSE95FP0.SQUARE2.jpg http://cdn.instructables.com/F7J/6KKS/HSE95FP0/F7J6KKSHSE95FP0.SQUARE.jpg http://cdn.instructables.com/F7J/6KKS/HSE95FP0/F7J6KKSHSE95FP0.SMALL.jpg panther3001 LiPo batteries should never be discharged below 3.0V/cell, or it may permanently damage them.  Many chargers don't even allow you to charge a LiPo battery below 2.5V/cell.  So, if you accidentally run your plane/car too long, you don't have your low voltage cutoff set properly in the ESC (Electronic...
By: panther3001

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Wed, 5 Mar 2014 19:55:22 PST
Led Glass Nightlight with Brightness Control (v1.0) http://www.instructables.com/id/Led-Glass-Nightlight-with-Brightness-Control-v10/
Led Glass Nightlight with Brightness Control (v1.0) - More DIY How To Projects]]> http://cdn.instructables.com/F5U/ONQ7/HS8FUXSP/F5UONQ7HS8FUXSP.SQUARE2.jpg http://cdn.instructables.com/F5U/ONQ7/HS8FUXSP/F5UONQ7HS8FUXSP.SQUARE.jpg http://cdn.instructables.com/F5U/ONQ7/HS8FUXSP/F5UONQ7HS8FUXSP.SMALL.jpg Killerwhale Today i saw a broken Glass in my store room and i thought to use it to make a glowing glass nightlight. Some components were with me already so it was easy to make this nightlight.Actually this can also be a led whiteboard which will glow highlighter ink like i wrote my name on Glass and it's Glowin...
By: Killerwhale

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Sat, 1 Mar 2014 10:54:19 PST
Smart mint the solar phone charger http://www.instructables.com/id/Smart-mint-the-solar-phone-charger/
Smart mint the solar phone charger - More DIY How To Projects]]> http://cdn.instructables.com/FYI/3JIV/HS3GV5PG/FYI3JIVHS3GV5PG.SQUARE2.jpg http://cdn.instructables.com/FYI/3JIV/HS3GV5PG/FYI3JIVHS3GV5PG.SQUARE.jpg http://cdn.instructables.com/FYI/3JIV/HS3GV5PG/FYI3JIVHS3GV5PG.SMALL.jpg tech savvy Hello everyone Techsavvy here ,   it been awhile since I posted anything , and I  Thought I owe it to my Awesome subscribers to post something I'v been working on ,  Thanks again guys for your support  ;-)  and fellow users  so to start off by saying a couple of things , well for starters I wante...
By: tech savvy

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Wed, 26 Feb 2014 21:59:47 PST
Robot Walker http://www.instructables.com/id/Robot-Walker/
Robot Walker - More DIY How To Projects]]> http://cdn.instructables.com/F00/2KJS/HS0D4037/F002KJSHS0D4037.SQUARE2.jpg http://cdn.instructables.com/F00/2KJS/HS0D4037/F002KJSHS0D4037.SQUARE.jpg http://cdn.instructables.com/F00/2KJS/HS0D4037/F002KJSHS0D4037.SMALL.jpg ade gracia beriguete This is a relatively simple project, it is a type robot walker, ie it walks on all fours like a bug, that's why they catalog as BEAM robot. This robot was designed based on a similar one in canada.
By: ade gracia beriguete

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Sun, 23 Feb 2014 16:06:19 PST
LED infinity mirror http://www.instructables.com/id/LED-infinity-mirror-1/
LED infinity mirror - More DIY How To Projects]]> http://cdn.instructables.com/F1M/1IRR/HRTKJALH/F1M1IRRHRTKJALH.SQUARE2.jpg http://cdn.instructables.com/F1M/1IRR/HRTKJALH/F1M1IRRHRTKJALH.SQUARE.jpg http://cdn.instructables.com/F1M/1IRR/HRTKJALH/F1M1IRRHRTKJALH.SMALL.jpg wiscdoledino Theses infinity mirrors are pretty cool and easy to make. The concept of it that you have a regular mirror, with led lights in between the regular mirror and a two mirror. The two way mirror is a more expensive and you want it to be the same size as the regular mirror. I used 12 volt interter to p...
By: wiscdoledino

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Wed, 19 Feb 2014 11:56:49 PST
Solar Powered Soldering Station http://www.instructables.com/id/Solar-Powered-Soldering-Station/
Solar Powered Soldering Station - More DIY How To Projects]]> http://cdn.instructables.com/F1S/6H7G/HRPBAHXW/F1S6H7GHRPBAHXW.SQUARE2.jpg http://cdn.instructables.com/F1S/6H7G/HRPBAHXW/F1S6H7GHRPBAHXW.SQUARE.jpg http://cdn.instructables.com/F1S/6H7G/HRPBAHXW/F1S6H7GHRPBAHXW.SMALL.jpg Solarcycle This project is based on my Kickstarter project called Solarpad, which includes the custom high power Solarpad solar panel and Power Core battery. Specifications for Solarpad and Power Core can be found on this page: www.solarcyclepower.com Have you ever wanted to solder outside on a nice sunny ...
By: Solarcycle

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Fri, 14 Feb 2014 21:59:51 PST
Contour GPS battery release camera http://www.instructables.com/id/Contour-GPS-battery-release-camera/
Contour GPS battery release camera - More DIY How To Projects]]> http://cdn.instructables.com/F0X/36PN/HRBNE2BG/F0X36PNHRBNE2BG.SQUARE2.jpg http://cdn.instructables.com/F0X/36PN/HRBNE2BG/F0X36PNHRBNE2BG.SQUARE.jpg http://cdn.instructables.com/F0X/36PN/HRBNE2BG/F0X36PNHRBNE2BG.SMALL.jpg cpaulo simple idea. So, difficult is remove the old batteries of contours on slot camera. these photos present a simple idea to solve this. You can insert in the battery a electrical tape. you will need only a piece of electrical type. done.
By: cpaulo

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Sat, 8 Feb 2014 18:12:30 PST
low frequency audio amplifier using the LM386 http://www.instructables.com/id/low-frequency-audio-amplifier-using-the-LM386/
low frequency audio amplifier using the LM386 - More DIY How To Projects]]> http://cdn.instructables.com/FNQ/SWV2/HR4SWC46/FNQSWV2HR4SWC46.SQUARE2.jpg http://cdn.instructables.com/FNQ/SWV2/HR4SWC46/FNQSWV2HR4SWC46.SQUARE.jpg http://cdn.instructables.com/FNQ/SWV2/HR4SWC46/FNQSWV2HR4SWC46.SMALL.jpg Er Varun Goyal The integrated chip LM386 is a low power audio frequency amplifier requiring a low level power supply . The IC is designed to deliver a voltage amplification of 20 without external add-on parts. But this voltage gain can be raised up to 200 (Vu = 200) by adding external parts. soo today i am goin...
By: Er Varun Goyal

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Tue, 4 Feb 2014 05:31:47 PST
L.E.D. Rose's http://www.instructables.com/id/LED-Roses/
L.E.D. Rose's - More DIY How To Projects]]> http://cdn.instructables.com/F6M/I3LO/HQQLNCKY/F6MI3LOHQQLNCKY.SQUARE2.jpg http://cdn.instructables.com/F6M/I3LO/HQQLNCKY/F6MI3LOHQQLNCKY.SQUARE.jpg http://cdn.instructables.com/F6M/I3LO/HQQLNCKY/F6MI3LOHQQLNCKY.SMALL.jpg wiscdoledino These L.E.D. Rose's are pretty easy to make there's a few examples out there on how to make paper roses. I used green paper for the steam and pink or the roses. To make the rose peddles you cut the pink paper into 2 inch squares and trim the edge of one side. I have red and black wires running threw...
By: wiscdoledino

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Fri, 24 Jan 2014 07:25:33 PST
Simple 5v battery backup circuit http://www.instructables.com/id/Simple-5v-battery-backup-circuit/ http://cdn.instructables.com/FFD/TIBK/HQS4YKOG/FFDTIBKHQS4YKOG.SQUARE2.jpg http://cdn.instructables.com/FFD/TIBK/HQS4YKOG/FFDTIBKHQS4YKOG.SQUARE.jpg http://cdn.instructables.com/FFD/TIBK/HQS4YKOG/FFDTIBKHQS4YKOG.SMALL.jpg victordas It’s a simple 5v battery backup circuit with constant slow charging facility. Its mostly suitable for microcontroller projects where we need constant current source without any cut-out. Whenever mains fails the battery takes the load without any delay again when mains restores batter goes to chargin...
By: victordas

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Thu, 23 Jan 2014 23:41:27 PST
2xAAA Powered Arduino http://www.instructables.com/id/2xAAA-Powered-Arduino/
2xAAA Powered Arduino - More DIY How To Projects]]> http://cdn.instructables.com/F5K/RFR5/HQOJ782W/F5KRFR5HQOJ782W.SQUARE2.jpg http://cdn.instructables.com/F5K/RFR5/HQOJ782W/F5KRFR5HQOJ782W.SQUARE.jpg http://cdn.instructables.com/F5K/RFR5/HQOJ782W/F5KRFR5HQOJ782W.SMALL.jpg tzq33tdq In this instructable I will teach you how you can run your arduino uno r3 (others will most likely work but are untested by me) using only 2 AAA batteries. I got everything from Jaycar but I am sure you can source these in countries outside of Australia. Required Item For this you will need: 1 x...
By: tzq33tdq

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Tue, 21 Jan 2014 02:47:08 PST
little Bits Bugs http://www.instructables.com/id/little-Bits-Bugs/
little Bits Bugs - More DIY How To Projects]]> http://cdn.instructables.com/FPV/2AFP/HQMN5P61/FPV2AFPHQMN5P61.SQUARE2.jpg http://cdn.instructables.com/FPV/2AFP/HQMN5P61/FPV2AFPHQMN5P61.SQUARE.jpg http://cdn.instructables.com/FPV/2AFP/HQMN5P61/FPV2AFPHQMN5P61.SMALL.jpg Ferrybugs Fun, buzzing, bugs. Warning: may cause annoyance to other members of household. Materials little bits pieces; p1 power i5 slide dimmer o6 buzzer i16 pulse o11 servo screw driver Craft materials; bright pens paper scissors tape or blue tack Assemble circuit Assemble little bits in following ...
By: Ferrybugs

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Sun, 19 Jan 2014 22:17:08 PST
LED skateboard version 3! http://www.instructables.com/id/LED-skateboard-version-3/
LED skateboard version 3! - More DIY How To Projects]]> http://cdn.instructables.com/F5P/AT07/HQB80II2/F5PAT07HQB80II2.SQUARE2.jpg http://cdn.instructables.com/F5P/AT07/HQB80II2/F5PAT07HQB80II2.SQUARE.jpg http://cdn.instructables.com/F5P/AT07/HQB80II2/F5PAT07HQB80II2.SMALL.jpg out-of-the-box Thank you for viewing my instructable! As the title says this is my 3rd led skateboard! But this is actually the first one I am making a 'how to' for. My first led board was alright, It did have a few flaws and aside from just turning it on there wasn't much appeal to it. Yes it did look very nice r...
By: out-of-the-box

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Sat, 11 Jan 2014 14:36:00 PST
from battery to wall wart in 10 minutes (with no soldering) http://www.instructables.com/id/from-battery-to-wall-wart-in-10-minutes-with-no-so/
from battery to wall wart in 10 minutes (with no soldering) - More DIY How To Projects]]> http://cdn.instructables.com/FPQ/5M18/HQ3ZSTF8/FPQ5M18HQ3ZSTF8.SQUARE2.jpg http://cdn.instructables.com/FPQ/5M18/HQ3ZSTF8/FPQ5M18HQ3ZSTF8.SQUARE.jpg http://cdn.instructables.com/FPQ/5M18/HQ3ZSTF8/FPQ5M18HQ3ZSTF8.SMALL.jpg andrea biffi If you like electronic gadgets as I do, you constantly need to charge many batteries, since battery powered devices are still much common. But batteries pollute, disposal has a cost, batteries themselves are not cheap at all if you buy good quality ones. There is also another issue, many devices wor...
By: andrea biffi

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Tue, 7 Jan 2014 11:30:10 PST
How To Make A Fading Light Circuit http://www.instructables.com/id/How-To-Make-A-Fading-Light-Circuit/
How To Make A Fading Light Circuit - More DIY How To Projects]]> http://cdn.instructables.com/FV0/ZTCZ/HQ476VOC/FV0ZTCZHQ476VOC.SQUARE2.jpg http://cdn.instructables.com/FV0/ZTCZ/HQ476VOC/FV0ZTCZHQ476VOC.SQUARE.jpg http://cdn.instructables.com/FV0/ZTCZ/HQ476VOC/FV0ZTCZHQ476VOC.SMALL.jpg coolyyz Parts 9 volt battery led and a capacitor null Done Power it up and remove one of the battery wires and it will fade off
By: coolyyz

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Mon, 6 Jan 2014 16:56:16 PST
Raspberry Pi Rain Box http://www.instructables.com/id/Raspberry-Pi-Rain-Box/
Raspberry Pi Rain Box - More DIY How To Projects]]> http://cdn.instructables.com/FP4/DRUR/HPYORXUW/FP4DRURHPYORXUW.SQUARE2.jpg http://cdn.instructables.com/FP4/DRUR/HPYORXUW/FP4DRURHPYORXUW.SQUARE.jpg http://cdn.instructables.com/FP4/DRUR/HPYORXUW/FP4DRURHPYORXUW.SMALL.jpg Adum24 I find the sound of rain really soothing, and wanted a device to just play rain sounds for me. I figured the Raspberry Pi would be perfect for this. So I wrote a Python script that selects a random number, and, based on the number, selects a rain sound to play. After that, I stuck it in a hobby proj...
By: Adum24

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Sun, 5 Jan 2014 19:30:31 PST
Little-Bits Two Way Morse Code http://www.instructables.com/id/Little-Bits-Two-Way-Morse-Code/
Little-Bits Two Way Morse Code - More DIY How To Projects]]> http://cdn.instructables.com/FOL/8KMI/HPWMM8RK/FOL8KMIHPWMM8RK.SQUARE2.jpg http://cdn.instructables.com/FOL/8KMI/HPWMM8RK/FOL8KMIHPWMM8RK.SQUARE.jpg http://cdn.instructables.com/FOL/8KMI/HPWMM8RK/FOL8KMIHPWMM8RK.SMALL.jpg Ferrybugs This is a fun way to learn and play with Morse code, electronics, led lights, buzzers and Little Bits. You will need matching glasses cases Blue tack scrap paper x2 pen x2 timer Little Bit pieces or equivalent; p1 power i3 button x2 w1 wire x3 o3 rgb light o6 Buzzer. Assemble Little Bits Conne...
By: Ferrybugs

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Thu, 2 Jan 2014 03:36:31 PST
Tinyduino LEGO GPS battery powered Logger DIY http://www.instructables.com/id/Tinyduino-LEGO-GPS-battery-powered-Logger-DIY/
Tinyduino LEGO GPS battery powered Logger DIY - More DIY How To Projects]]> http://cdn.instructables.com/FB0/9M07/HPQO9KHF/FB09M07HPQO9KHF.SQUARE2.jpg http://cdn.instructables.com/FB0/9M07/HPQO9KHF/FB09M07HPQO9KHF.SQUARE.jpg http://cdn.instructables.com/FB0/9M07/HPQO9KHF/FB09M07HPQO9KHF.SMALL.jpg crackopl Hi All :) It's us again. And when I mean "us" - it means me and PS. We have decided to share with you some of our recent project that we're working on. This is part of the project we're working on but it's "a working part" therefore if your idea is to have pocket size GPS logger that can be powered...
By: crackopl

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Sat, 28 Dec 2013 07:46:20 PST
Dark Sensor ( light sensor / automatic street light ) http://www.instructables.com/id/Dark-Sensor-light-sensor-automatic-street-light-/
Dark Sensor ( light sensor / automatic street light ) - More DIY How To Projects]]> http://cdn.instructables.com/FEL/R1P1/HQJZSZ83/FELR1P1HQJZSZ83.SQUARE2.jpg http://cdn.instructables.com/FEL/R1P1/HQJZSZ83/FELR1P1HQJZSZ83.SQUARE.jpg http://cdn.instructables.com/FEL/R1P1/HQJZSZ83/FELR1P1HQJZSZ83.SMALL.jpg Er Varun Goyal Here is my new simple Electronics project about  Automatic Street Light Control System or Dark Sensor. it is a simple and powerful concept , which uses transistor ( BC 547 NPN) as a switch to switch ON and OFF the street light system automatically . It automatically switches ON lights when the sunl...
By: Er Varun Goyal

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Fri, 27 Dec 2013 07:48:26 PST
charging station http://www.instructables.com/id/charging-station-2/
charging station - More DIY How To Projects]]> http://cdn.instructables.com/F5M/2JAV/HQV6IOZO/F5M2JAVHQV6IOZO.SQUARE2.jpg http://cdn.instructables.com/F5M/2JAV/HQV6IOZO/F5M2JAVHQV6IOZO.SQUARE.jpg http://cdn.instructables.com/F5M/2JAV/HQV6IOZO/F5M2JAVHQV6IOZO.SMALL.jpg wiscdoledino I have a bunch of devices that i need to charge, Doing it this way makes it so I know where my chargers are whenever I need them. This is a 12 slot plug. I got it at a hardware store for around 20 bucks. Devices that I am charging. new iphone original iphone galaxsy s3 battery standard phone plug ...
By: wiscdoledino

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Thu, 26 Dec 2013 12:47:43 PST
Water Level Indicator with Alarm http://www.instructables.com/id/Water-Level-Indicator-with-Alarm-1/
Water Level Indicator with Alarm - More DIY How To Projects]]> http://cdn.instructables.com/FTN/01U8/HPO2DUES/FTN01U8HPO2DUES.SQUARE2.jpg http://cdn.instructables.com/FTN/01U8/HPO2DUES/FTN01U8HPO2DUES.SQUARE.jpg http://cdn.instructables.com/FTN/01U8/HPO2DUES/FTN01U8HPO2DUES.SMALL.jpg Er Varun Goyal Today I am going to talk about a very useful project that I had taken up. It is called the Water Level Indicator. Nowadays everybody has overhead tank at their homes. But everyone who has a water tank above knows the kind of problems that they face. Firstly there is no system to track the water in t...
By: Er Varun Goyal

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Thu, 26 Dec 2013 09:54:15 PST
Crack Open a Kindle Touch http://www.instructables.com/id/Crack-Open-a-Kindle-Touch/
Crack Open a Kindle Touch - More DIY How To Projects]]> http://cdn.instructables.com/FOD/1WJC/HPN4LF8Z/FOD1WJCHPN4LF8Z.SQUARE2.jpg http://cdn.instructables.com/FOD/1WJC/HPN4LF8Z/FOD1WJCHPN4LF8Z.SQUARE.jpg http://cdn.instructables.com/FOD/1WJC/HPN4LF8Z/FOD1WJCHPN4LF8Z.SMALL.jpg Phil B This photo shows the back of a Kindle Touch. You may want to open a Kindle so you can change the battery yourself in minutes rather than waiting days for your Kindle to come back from a repair station. I had to open this one after it became water-logged in an accident. Fortunately, the electronics s...
By: Phil B

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Thu, 26 Dec 2013 06:48:19 PST
Put Your Batteries On the Outside http://www.instructables.com/id/Put-Your-Batteries-On-the-Outside/
Put Your Batteries On the Outside - More DIY How To Projects]]> http://cdn.instructables.com/FPC/COF8/HPBJ2I5K/FPCCOF8HPBJ2I5K.SQUARE2.jpg http://cdn.instructables.com/FPC/COF8/HPBJ2I5K/FPCCOF8HPBJ2I5K.SQUARE.jpg http://cdn.instructables.com/FPC/COF8/HPBJ2I5K/FPCCOF8HPBJ2I5K.SMALL.jpg russ_hensel Some devices are a pain to open up and change the batteries.  If the device is not often used the batteries are usually dead when you want to use it.  What a pain.   Easy fix:  put the battery on the outside.  Also easy to use a plug in adapter so no battery is even necessary.  This method has mini...
By: russ_hensel

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Thu, 19 Dec 2013 11:31:11 PST
Why buy a festive card for a friend or your family when you can make one? What if you could make one full of LEDs, batteries and the art work itself was conductive? http://www.instructables.com/id/Why-buy-a-festive-card-for-a-friend-or-your-family/ http://cdn.instructables.com/FWX/6W4V/HPDB2ARG/FWX6W4VHPDB2ARG.SQUARE2.jpg http://cdn.instructables.com/FWX/6W4V/HPDB2ARG/FWX6W4VHPDB2ARG.SQUARE.jpg http://cdn.instructables.com/FWX/6W4V/HPDB2ARG/FWX6W4VHPDB2ARG.SMALL.jpg techwillsaveus Why buy a festive card for a friend or your family when you can make one? What if you could make one full of LEDs, batteries and the art work itself was conductive? This DIY kit comes with Bare Conductive paint - a multipurpose electrically conductive material, 6 LED's, 3 button cell betteries, a se...
By: techwillsaveus

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Thu, 19 Dec 2013 07:48:42 PST
Two ways to make power http://www.instructables.com/id/Two-ways-to-make-power/
Two ways to make power - More DIY How To Projects]]> http://cdn.instructables.com/FXH/J7UL/HPCE8F14/FXHJ7ULHPCE8F14.SQUARE2.jpg http://cdn.instructables.com/FXH/J7UL/HPCE8F14/FXHJ7ULHPCE8F14.SQUARE.jpg http://cdn.instructables.com/FXH/J7UL/HPCE8F14/FXHJ7ULHPCE8F14.SMALL.jpg the electrical engineer This is a basic instruct able that tells how to make electric power two ways. The first way is to use a motor generator. (handheld generator). The way to make this is to take a motor and crank it. If you crank the motor it will generate a little power. This generator makes power but it hardl...
By: the electrical engineer

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Wed, 18 Dec 2013 16:37:36 PST
How to make a simple motor http://www.instructables.com/id/How-to-make-a-simple-motor-1/
How to make a simple motor - More DIY How To Projects]]> http://cdn.instructables.com/FGD/42Q6/HPAUWFA5/FGD42Q6HPAUWFA5.SQUARE2.jpg http://cdn.instructables.com/FGD/42Q6/HPAUWFA5/FGD42Q6HPAUWFA5.SQUARE.jpg http://cdn.instructables.com/FGD/42Q6/HPAUWFA5/FGD42Q6HPAUWFA5.SMALL.jpg the electrical engineer This is a guide on how to make a very simple motor. To make it get a strong magnet and attach it on the battery. Next tape two pins or needles onto the positive and negative battery sides. Put a coil of copper wire in the middle and you have a simple motor. Please follow and fav.
By: the electrical engineer

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Tue, 17 Dec 2013 15:16:59 PST
How to make an Engraver http://www.instructables.com/id/How-to-make-an-Engraver/
How to make an Engraver - More DIY How To Projects]]> http://cdn.instructables.com/F1O/PB5W/HPA3XV6N/F1OPB5WHPA3XV6N.SQUARE2.jpg http://cdn.instructables.com/F1O/PB5W/HPA3XV6N/F1OPB5WHPA3XV6N.SQUARE.jpg http://cdn.instructables.com/F1O/PB5W/HPA3XV6N/F1OPB5WHPA3XV6N.SMALL.jpg the electrical engineer Nowadays everybody finds it fun to engrave their name on something but they don't have an automatic engraver. This instructable tells how to make your own so you can engrave your name somewhere.materials:1. Motor without a gear. You can use pliers to pull the gear out.2. Wires3. batteries and b...
By: the electrical engineer

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Mon, 16 Dec 2013 15:50:57 PST
Ultra-bright Emergency Waterproof Torch DIY (Rechargeble) http://www.instructables.com/id/Ultra-bright-Waterproof-Torch-DIY-Rechargeble/
Ultra-bright Emergency Waterproof Torch DIY (Rechargeble) - More DIY How To Projects]]> http://cdn.instructables.com/FNO/VUUS/HP7AO7AC/FNOVUUSHP7AO7AC.SQUARE2.jpg http://cdn.instructables.com/FNO/VUUS/HP7AO7AC/FNOVUUSHP7AO7AC.SQUARE.jpg http://cdn.instructables.com/FNO/VUUS/HP7AO7AC/FNOVUUSHP7AO7AC.SMALL.jpg PrathameshJ This is an Ultra bright torch Which is maximum recycled. This can be used for camping,Halloween,pool lights,night light, camera flash light,blackouts etc. Gathering Materials 1] DC Socket (Recycled Parts) 2] BL-5C (Recycled Parts) 3] Switch (Recycled Parts) 4] 3W ultabright led (Recycled Parts...
By: PrathameshJ

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Sun, 15 Dec 2013 00:08:20 PST
Easy LED Color Changing "Candle" http://www.instructables.com/id/Easy-LED-Color-Changing-Light/
Easy LED Color Changing "Candle" - More DIY How To Projects]]> http://cdn.instructables.com/FYL/MJZ5/HP71H2BW/FYLMJZ5HP71H2BW.SQUARE2.jpg http://cdn.instructables.com/FYL/MJZ5/HP71H2BW/FYLMJZ5HP71H2BW.SQUARE.jpg http://cdn.instructables.com/FYL/MJZ5/HP71H2BW/FYLMJZ5HP71H2BW.SMALL.jpg Cats Science Club This is a simple color changing light that is great for kids and adults. Looks beautiful in a dimly lit room, great for the holidays, and makes a pretty cool night light. Materials Glue Gun - We are using a low temperature glue gun. It hurts when the glue touches your skin but it does not burn y...
By: Cats Science Club

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Sat, 14 Dec 2013 08:41:26 PST
Increase Play time of MP3 Player http://www.instructables.com/id/Increase-Play-time-of-MP3-Player/
Increase Play time of MP3 Player - More DIY How To Projects]]> http://cdn.instructables.com/F2W/IJYS/HP0CJ9YK/F2WIJYSHP0CJ9YK.SQUARE2.jpg http://cdn.instructables.com/F2W/IJYS/HP0CJ9YK/F2WIJYSHP0CJ9YK.SQUARE.jpg http://cdn.instructables.com/F2W/IJYS/HP0CJ9YK/F2WIJYSHP0CJ9YK.SMALL.jpg BLR_RAVI I purchased a mp3 frm local market , but it hardly plays for 10 - 15 min and then I had to recharge it .I found that it uses cheap tiny rechargable battery , which was nothing but scrap , so I thought to replace it a higher amps battery so that it runs for hours . Open the mp3 player , carefully...
By: BLR_RAVI

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Wed, 11 Dec 2013 04:24:36 PST
$3.00 Altoids Charger (EASY BUILD) (CHEAP) http://www.instructables.com/id/300-Altoids-Charger-EASY-BUILD-CHEAP/
$3.00 Altoids Charger (EASY BUILD) (CHEAP) - More DIY How To Projects]]> http://cdn.instructables.com/F4H/O57K/HOUG0C9N/F4HO57KHOUG0C9N.SQUARE2.jpg http://cdn.instructables.com/F4H/O57K/HOUG0C9N/F4HO57KHOUG0C9N.SQUARE.jpg http://cdn.instructables.com/F4H/O57K/HOUG0C9N/F4HO57KHOUG0C9N.SMALL.jpg snow1434 I know your thinking i have seen hundreds of these but have you ever seen one so easy to build? LETS GET STARTED Things you will need : L78MO5CV Voltage Regulator http://www.taydaelectronics.com/ic-integrated-circuits/voltage-regulators/lm7805-l7805-7805-voltage-regulator-ic-5v-1-5a.html ...
By: snow1434

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Sun, 8 Dec 2013 21:48:07 PST
Aluminium Sulfate Lead Acid Battery Conversion http://www.instructables.com/id/Aluminium-Sulfate-Lead-Acid-Battery/
Aluminium Sulfate Lead Acid Battery Conversion - More DIY How To Projects]]> http://cdn.instructables.com/FCU/C7EJ/HOHYE31B/FCUC7EJHOHYE31B.SQUARE2.jpg http://cdn.instructables.com/FCU/C7EJ/HOHYE31B/FCUC7EJHOHYE31B.SQUARE.jpg http://cdn.instructables.com/FCU/C7EJ/HOHYE31B/FCUC7EJHOHYE31B.SMALL.jpg speakerbox quick how to on aluminum sulfate electrolyte for lead acid batteries. Purchase Ingredients. you will need aluminium sulfate, a hydrometer, distilled water and a two buckets.also you will need a face mask. long sleeves, safety goggles and water on hand.this job could cause death or serious harm ...
By: speakerbox

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Fri, 29 Nov 2013 19:29:59 PST