Instructables: exploring - technology - battery - popular http://www.instructables.com Mon, 26 Sep 2016 19:06:18 PDT BLOX v1.01 Cheap and Easy Battery Holder Version 2 http://www.instructables.com/id/Battery-Holder-Version-2/
Cheap and Easy Battery Holder Version 2 - More DIY How To Projects]]> https://cdn.instructables.com/FKN/1Z4H/F9AZJQHT/FKN1Z4HF9AZJQHT.SQUARE2.jpg https://cdn.instructables.com/FKN/1Z4H/F9AZJQHT/FKN1Z4HF9AZJQHT.SQUARE.jpg https://cdn.instructables.com/FKN/1Z4H/F9AZJQHT/FKN1Z4HF9AZJQHT.SMALL.jpg xtank5 This is the second version of my battery holder. This holder is for those who like a nice tight fit. In fact it's so tight you'll need something to pry out the dead battery. That is if you measure it too small and don't allow enough room for the battery. This holder also has stronger tabs and uses l...
By: xtank5

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Wed, 2 Jan 2008 21:00:13 PST
how to make a portable mp3 amp from old computer speakers http://www.instructables.com/id/how-to-make-a-portable-mp3-amp-from-old-computer-s/
how to make a portable mp3 amp from old computer speakers - More DIY How To Projects]]> https://cdn.instructables.com/FVZ/3E9P/FJ6H3I36/FVZ3E9PFJ6H3I36.SQUARE2.jpg https://cdn.instructables.com/FVZ/3E9P/FJ6H3I36/FVZ3E9PFJ6H3I36.SQUARE.jpg https://cdn.instructables.com/FVZ/3E9P/FJ6H3I36/FVZ3E9PFJ6H3I36.SMALL.jpg odavidson have you got a pair of old computer speakers lying around that you dont need? want to make a decent iPod/mp3 amp? these speakers are powered via a PP3 9V battery materials: speakers snap on clip for 9V batter 9V battery audio source tools: soldering iron and solder screw driver wire cutters/teeth ...
By: odavidson

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Mon, 28 Jul 2008 13:30:38 PDT
Electricity Generating Shoe Insole http://www.instructables.com/id/Electricity-Generating-Shoe-Insole/
Electricity Generating Shoe Insole - More DIY How To Projects]]> https://cdn.instructables.com/FMN/YVJL/HZ3YC755/FMNYVJLHZ3YC755.SQUARE2.jpg https://cdn.instructables.com/FMN/YVJL/HZ3YC755/FMNYVJLHZ3YC755.SQUARE.jpg https://cdn.instructables.com/FMN/YVJL/HZ3YC755/FMNYVJLHZ3YC755.SMALL.jpg Zach Sousa In this instructable I will show you how to make a shoe generator. What is a Shoe generator? A shoe generator ia a device that generates electricity from walking / running or any sport that you have to walk/run in.Link for the remix contest: http://www.instructables.com/id/Electricity-Generating-Foo...
By: Zach Sousa

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Thu, 21 Aug 2014 11:30:52 PDT
EASY Solar Charging Power Bank http://www.instructables.com/id/EASY-Solar-Charging-Power-Bank/
EASY Solar Charging Power Bank - More DIY How To Projects]]> https://cdn.instructables.com/FTK/YQIH/ISXX7H9Y/FTKYQIHISXX7H9Y.SQUARE2.jpg https://cdn.instructables.com/FTK/YQIH/ISXX7H9Y/FTKYQIHISXX7H9Y.SQUARE.jpg https://cdn.instructables.com/FTK/YQIH/ISXX7H9Y/FTKYQIHISXX7H9Y.SMALL.jpg NathanR97 Hello! My name is Nathan, and I am an amateur tinkerer. I needed a power bank for camping, bonfires, emergencies, and general tom foolery. Given my tinkery nature, buying one seemed some what sacrilegious. My build CAN be cheaper than your average power bank and will certainly have more functionalit...
By: NathanR97

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Sat, 10 Sep 2016 20:52:33 PDT
Arduino Battery http://www.instructables.com/id/Arduino-Battery/
Arduino Battery - More DIY How To Projects]]> https://cdn.instructables.com/FW3/ZE9C/H347FMPT/FW3ZE9CH347FMPT.SQUARE2.jpg https://cdn.instructables.com/FW3/ZE9C/H347FMPT/FW3ZE9CH347FMPT.SQUARE.jpg https://cdn.instructables.com/FW3/ZE9C/H347FMPT/FW3ZE9CH347FMPT.SMALL.jpg msuzuki777 As many of you may know, this Lazy Old Geek loves Arduinos. Many of my projects are portable and need a battery source: http://www.instructables.com/id/Arduino-Pedometer/ http://www.instructables.com/id/Arduino-Nokia-LCD-Sensors/ http://www.instructables.com/id/Ultrasonic-Tape-Measure/   ...
By: msuzuki777

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Sat, 13 Oct 2012 15:11:08 PDT
DIY Arduino Battery Capacity Tester - V1.0 http://www.instructables.com/id/DIY-Arduino-Battery-Capacity-Tester-V10-/
DIY Arduino Battery Capacity Tester - V1.0 - More DIY How To Projects]]> https://cdn.instructables.com/FS2/RW94/ISCBTZJB/FS2RW94ISCBTZJB.SQUARE2.jpg https://cdn.instructables.com/FS2/RW94/ISCBTZJB/FS2RW94ISCBTZJB.SQUARE.jpg https://cdn.instructables.com/FS2/RW94/ISCBTZJB/FS2RW94ISCBTZJB.SMALL.jpg deba168 [ Play Video ]I have salvaged so many old lap-top batteries ( 18650 ) to reuse them in my solar projects.It is very difficult to identify the good cells in battery pack.Earlier in one of my Power Bank Instructable I have told, how to identify good cells by measuring their voltages, but this method i...
By: deba168

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Sun, 4 Sep 2016 21:40:26 PDT
Electric Lighter http://www.instructables.com/id/Electric-Lighter/
Electric Lighter - More DIY How To Projects]]> https://cdn.instructables.com/FHZ/7PWV/ISCBB9V5/FHZ7PWVISCBB9V5.SQUARE2.jpg https://cdn.instructables.com/FHZ/7PWV/ISCBB9V5/FHZ7PWVISCBB9V5.SQUARE.jpg https://cdn.instructables.com/FHZ/7PWV/ISCBB9V5/FHZ7PWVISCBB9V5.SMALL.jpg Ynze- I had some nichrome wire laying around and I wanted to make something with it. So I came up with the idea to make an electric lighter.I wanted it to be small and easy to use. You can light most things you can light with an ordinary lighter. Like a candle, a piece of paper or even a piece of wood. ...
By: Ynze-

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Thu, 1 Sep 2016 08:10:32 PDT
Make an Optical Disk Display http://www.instructables.com/id/Make-an-Optical-Disk-Display/
Make an Optical Disk Display - More DIY How To Projects]]> https://cdn.instructables.com/FAD/YLMC/IRO1GU7A/FADYLMCIRO1GU7A.SQUARE2.jpg https://cdn.instructables.com/FAD/YLMC/IRO1GU7A/FADYLMCIRO1GU7A.SQUARE.jpg https://cdn.instructables.com/FAD/YLMC/IRO1GU7A/FADYLMCIRO1GU7A.SMALL.jpg Lucas Reed Every curious how DVDs work? Interested in learning some simple analog electronics? This Instructables will show you how to make an optical disk display project in only a few hours. What is an optical disk? An optical disk stores data/information and can be read or displayed using light.You will lea...
By: Lucas Reed

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Wed, 10 Aug 2016 12:10:35 PDT
Portable, Solar 12V Battery Pack http://www.instructables.com/id/Portable-12V-Battery-Pack/
Portable, Solar 12V Battery Pack - More DIY How To Projects]]> https://cdn.instructables.com/FGP/3LNM/IRXTMLUN/FGP3LNMIRXTMLUN.SQUARE2.jpg https://cdn.instructables.com/FGP/3LNM/IRXTMLUN/FGP3LNMIRXTMLUN.SQUARE.jpg https://cdn.instructables.com/FGP/3LNM/IRXTMLUN/FGP3LNMIRXTMLUN.SMALL.jpg lonesoulsurfer Camping these days usually means bringing along things that need power. Usually I’d just use the cars 12v outlet but I find this a hassle, especially if you have to charge your phone at night. So, after being inspired by a build my youngest brother did, I decided to build myself a battery pack that...
By: lonesoulsurfer

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Tue, 23 Aug 2016 01:49:37 PDT
Li - Ion battery level indicator http://www.instructables.com/id/Li-Ion-battery-level-indicator/
Li - Ion battery level indicator - More DIY How To Projects]]> https://cdn.instructables.com/FD5/USRL/I1IQB3YZ/FD5USRLI1IQB3YZ.SQUARE2.jpg https://cdn.instructables.com/FD5/USRL/I1IQB3YZ/FD5USRLI1IQB3YZ.SQUARE.jpg https://cdn.instructables.com/FD5/USRL/I1IQB3YZ/FD5USRLI1IQB3YZ.SMALL.jpg Osvaldas Are you looking for a simple circuit to measure your Lithium Ion single cell charging and discharging level? Here is one chip circuit, powered up from the same Lithium Ion battery you want to measure.This circuit is design to measure 3.7V rechargeable batteries level. 4.2V - 100%; 4V - 80%; 3.8V - ...
By: Osvaldas

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Tue, 21 Oct 2014 13:28:44 PDT
Simple Homopolar Motor http://www.instructables.com/id/Simple-Homopolar-Motor/
Simple Homopolar Motor - More DIY How To Projects]]> https://cdn.instructables.com/FWL/GT4S/IRO1HDQN/FWLGT4SIRO1HDQN.SQUARE2.jpg https://cdn.instructables.com/FWL/GT4S/IRO1HDQN/FWLGT4SIRO1HDQN.SQUARE.jpg https://cdn.instructables.com/FWL/GT4S/IRO1HDQN/FWLGT4SIRO1HDQN.SMALL.jpg YuKonstruct The first homopolar motor was demonstrated by Michael Faraday in 1821. He was experimenting with magnetism and electricity when he discovered the first circular force then known in nature.This simple motor is a great beginner project for young makers!YuKonstruct is the first makerspace in Canada's n...
By: YuKonstruct

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Wed, 10 Aug 2016 12:04:01 PDT
Easy Carbon Electrode http://www.instructables.com/id/Easy-Carbon-Electrode/
Easy Carbon Electrode - More DIY How To Projects]]> https://cdn.instructables.com/FWK/B04P/FV40B29Z/FWKB04PFV40B29Z.SQUARE2.jpg https://cdn.instructables.com/FWK/B04P/FV40B29Z/FWKB04PFV40B29Z.SQUARE.jpg https://cdn.instructables.com/FWK/B04P/FV40B29Z/FWKB04PFV40B29Z.SMALL.jpg egbertfitzwilly Many alternative energy projects such as metal oxide batteries and microbial fuel cells call for a carbon electrode. The phrase alone is enough to stop most people dead in their tracks.This instructable shows how to make a very efficient, production grade carbon electrode for use in a variety of alt...
By: egbertfitzwilly

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Mon, 25 May 2009 14:12:09 PDT
Joule Thief Battery Charger http://www.instructables.com/id/Joule-Thief-Battery-Charger/
Joule Thief Battery Charger - More DIY How To Projects]]> https://cdn.instructables.com/FEB/9TP3/GRTHMK03/FEB9TP3GRTHMK03.SQUARE2.jpg https://cdn.instructables.com/FEB/9TP3/GRTHMK03/FEB9TP3GRTHMK03.SQUARE.jpg https://cdn.instructables.com/FEB/9TP3/GRTHMK03/FEB9TP3GRTHMK03.SMALL.jpg JoeBeau Many of you are probably aware of the "joule thief" circuit. If you aren't, it's a very simple voltage booster that is normally used to power an LED off of a mostly dead AA battery, but it can be used for other applications where a voltage boost is needed. One such application is charging a battery ...
By: JoeBeau

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Mon, 29 Aug 2011 11:19:16 PDT
Repurposing a cell phone - the making of a rechargeable battery pack. http://www.instructables.com/id/Repurposing-a-cell-phone-the-making-of-a-recharg/
Repurposing a cell phone - the making of a rechargeable battery pack. - More DIY How To Projects]]> https://cdn.instructables.com/FEI/4WB4/H11WJCB0/FEI4WB4H11WJCB0.SQUARE2.jpg https://cdn.instructables.com/FEI/4WB4/H11WJCB0/FEI4WB4H11WJCB0.SQUARE.jpg https://cdn.instructables.com/FEI/4WB4/H11WJCB0/FEI4WB4H11WJCB0.SMALL.jpg zack247 Long story short, I was in need of a 3-5v battery pack that was lightweight, lasted a decent amount of time, and wasn't too big. So I looked around for something, I had plenty of rechargeable batteries that suited my needs, but none that had dedicated chargers for them. And then I came across my old...
By: zack247

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Sun, 15 Apr 2012 20:40:03 PDT
Build Your Own Battery Power Supply http://www.instructables.com/id/Build-Your-Own-Battery-Power-Supply/
Build Your Own Battery Power Supply - More DIY How To Projects]]> https://cdn.instructables.com/FZZ/HPFV/IQ2O2Z4R/FZZHPFVIQ2O2Z4R.SQUARE2.jpg https://cdn.instructables.com/FZZ/HPFV/IQ2O2Z4R/FZZHPFVIQ2O2Z4R.SQUARE.jpg https://cdn.instructables.com/FZZ/HPFV/IQ2O2Z4R/FZZHPFVIQ2O2Z4R.SMALL.jpg Lucas Reed Have you ever needed to power a project that's not near an outlet? Have you needed to test using different voltages? Are you curious about analog circuits and power? Using Autodesk Circuits and a lead-acid battery, you can create a circuit that will act as a variable power supply, outputting a range...
By: Lucas Reed

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Thu, 30 Jun 2016 18:06:45 PDT
ROVER Bot - The Arduino Bluetooth Controlled Tank http://www.instructables.com/id/Arduino-ROVERBot/
ROVER Bot - The Arduino Bluetooth Controlled Tank - More DIY How To Projects]]> https://cdn.instructables.com/FC8/VXWI/I1PH3HXE/FC8VXWII1PH3HXE.SQUARE2.jpg https://cdn.instructables.com/FC8/VXWI/I1PH3HXE/FC8VXWII1PH3HXE.SQUARE.jpg https://cdn.instructables.com/FC8/VXWI/I1PH3HXE/FC8VXWII1PH3HXE.SMALL.jpg BIGDOG1971 Arduino Bluetooth ROVER RobotThe Arduino ROVERBot. This post aims to present you the construction steps of a ROVER using the Arduino and a bluetooth module. To control the ROVER it was used a Android phone as RC (radio control) interface. The Android application used is the "Arduino Bluetooth RC Con...
By: BIGDOG1971

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Sat, 25 Oct 2014 18:38:39 PDT
Portable Bluetooth Speaker http://www.instructables.com/id/Portable-Bluetooth-Speaker/
Portable Bluetooth Speaker - More DIY How To Projects]]> https://cdn.instructables.com/FA7/EO0V/IMRYF991/FA7EO0VIMRYF991.SQUARE2.jpg https://cdn.instructables.com/FA7/EO0V/IMRYF991/FA7EO0VIMRYF991.SQUARE.jpg https://cdn.instructables.com/FA7/EO0V/IMRYF991/FA7EO0VIMRYF991.SMALL.jpg tombaker120 A powerful, long lasting wooden Bluetooth Speaker, this is my attempt at a homemade Bluetooth Speaker. Research Do some research! Find out what types are available to you and their advantages and disadvantages. I chose to completely make my speaker out of 11mm birch face ply-wood due to it's rig...
By: tombaker120

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Thu, 31 Mar 2016 14:06:46 PDT
Ipod mini to 32gig and new battery without scratching it. http://www.instructables.com/id/Ipod-mini-to-32gig-and-new-battery-without-scratch/
Ipod mini to 32gig and new battery without scratching it. - More DIY How To Projects]]> https://cdn.instructables.com/F54/9A4V/FNNK6HVL/F549A4VFNNK6HVL.SQUARE2.jpg https://cdn.instructables.com/F54/9A4V/FNNK6HVL/F549A4VFNNK6HVL.SQUARE.jpg https://cdn.instructables.com/F54/9A4V/FNNK6HVL/F549A4VFNNK6HVL.SMALL.jpg CKOD In this Instructable, I'll be showing you how to easily open up an ipod mini without scratching or messing up the top and bottom, and upgrade the battery and the drive. Thanks to geek technique for inspiration, they do have instructions, but not an example of if a 32 gig card would would work, and ...
By: CKOD

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Fri, 21 Nov 2008 18:02:31 PST
Battery Eliminator http://www.instructables.com/id/Battery-Eliminator/
Battery Eliminator - More DIY How To Projects]]> https://cdn.instructables.com/F7Y/BIE1/IOT2XRAJ/F7YBIE1IOT2XRAJ.SQUARE2.jpg https://cdn.instructables.com/F7Y/BIE1/IOT2XRAJ/F7YBIE1IOT2XRAJ.SQUARE.jpg https://cdn.instructables.com/F7Y/BIE1/IOT2XRAJ/F7YBIE1IOT2XRAJ.SMALL.jpg dreens Do you have an appliance that eats through batteries? Follow this instructable for a simple, quick and dirty trick to power it directly from an outlet! If you want to do something more intense, check out doncrush's Battery Eliminator from a recycled wall wart. I will focus on replacing a single D b...
By: dreens

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Sat, 28 May 2016 08:08:57 PDT
IoT Weather Station With Adafruit HUZZAH ESP8266 (ESP-12E) And Adafruit IO (UPDATED) http://www.instructables.com/id/IoT-Weather-Station-With-ESP8266/
IoT Weather Station With Adafruit HUZZAH ESP8266 (ESP-12E) And Adafruit IO (UPDATED) - More DIY How To Projects]]> https://cdn.instructables.com/F69/JBWS/IJYUIHBT/F69JBWSIJYUIHBT.SQUARE2.jpg https://cdn.instructables.com/F69/JBWS/IJYUIHBT/F69JBWSIJYUIHBT.SQUARE.jpg https://cdn.instructables.com/F69/JBWS/IJYUIHBT/F69JBWSIJYUIHBT.SMALL.jpg Konstantin Dimitrov Hello, everyone ! Time ago I saw this Weather Station by Aleator777 and I was inspired to make my own weather station. I saw that the Intel Edison is too expensive in my country, so I decided to look for something much cheaper, and I found the Adafruit HUZZAH which is lot cheaper and I ordered one.W...
By: Konstantin Dimitrov

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Sun, 24 Jan 2016 07:55:29 PST
Make a Battery Protection Circuit (low voltage cut-off) http://www.instructables.com/id/Make-a-Battery-Protection-Circuit-low-voltage-cut-/
Make a Battery Protection Circuit (low voltage cut-off) - More DIY How To Projects]]> https://cdn.instructables.com/FY5/HJSA/I24LYGQF/FY5HJSAI24LYGQF.SQUARE2.jpg https://cdn.instructables.com/FY5/HJSA/I24LYGQF/FY5HJSAI24LYGQF.SQUARE.jpg https://cdn.instructables.com/FY5/HJSA/I24LYGQF/FY5HJSAI24LYGQF.SMALL.jpg DIYPerks In this video I will show you how to build a simple lithium battery protection circuit, so you can power your homemade projects without ever worrying about over discharging your battery.How to use lithium batteries safely: http://www.maxamps.com/lipo-care.phpMore info on battery measurements: http...
By: DIYPerks

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Wed, 5 Nov 2014 12:56:50 PST
Magnetic connectors for batteries http://www.instructables.com/id/Magnetic-Connectors-for-Batteries/
Magnetic connectors for batteries - More DIY How To Projects]]> https://cdn.instructables.com/F2V/OFOQ/IOOD5YBM/F2VOFOQIOOD5YBM.SQUARE2.jpg https://cdn.instructables.com/F2V/OFOQ/IOOD5YBM/F2VOFOQIOOD5YBM.SQUARE.jpg https://cdn.instructables.com/F2V/OFOQ/IOOD5YBM/F2VOFOQIOOD5YBM.SMALL.jpg Matlek Hi everyone,Here is a small tutorial about useful and easy to make battery connectors. I recently started to use 18650 cells batteries from old laptops, and I wanted a quick and easy way to connect them. Connectors using magnets were the best option, but I had to figure out how to use them correctly...
By: Matlek

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Thu, 26 May 2016 12:40:55 PDT
DC Brush Motor for Learning Fun http://www.instructables.com/id/DC-Brush-Motor-for-Learning-Fun/
DC Brush Motor for Learning Fun - More DIY How To Projects]]> https://cdn.instructables.com/F79/XG6B/GUCF4PPE/F79XG6BGUCF4PPE.SQUARE2.jpg https://cdn.instructables.com/F79/XG6B/GUCF4PPE/F79XG6BGUCF4PPE.SQUARE.jpg https://cdn.instructables.com/F79/XG6B/GUCF4PPE/F79XG6BGUCF4PPE.SMALL.jpg Phil B A friend has a young son who is newly fascinated by motors and electrical things. This Instructable replicates a DC electric demonstration motor I made about two decades ago for my own children. It is offered here for the sake of parents and teachers like my friend who want to help young people buil...
By: Phil B

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Sat, 29 Oct 2011 13:41:04 PDT
Everything about a bass: How to play, pick out, and have fun with an electric bass http://www.instructables.com/id/Everything-about-a-bass-How-to-play-pick-out-an/
Everything about a bass: How to play, pick out, and have fun with an electric bass - More DIY How To Projects]]> https://cdn.instructables.com/FTK/QL47/FHWNBWQ7/FTKQL47FHWNBWQ7.SQUARE2.jpg https://cdn.instructables.com/FTK/QL47/FHWNBWQ7/FTKQL47FHWNBWQ7.SQUARE.jpg https://cdn.instructables.com/FTK/QL47/FHWNBWQ7/FTKQL47FHWNBWQ7.SMALL.jpg heyzuphowsitgoin So deterring from my usually computer type insructable, I decided to make an "artsy" one. I am not a master bass player, but I've been playing for 3 years and know a little about what I am talking about. Picking out a bass If you have a bass already, just skip this step and buy an amp if you don...
By: heyzuphowsitgoin

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Thu, 26 Jun 2008 11:25:34 PDT
Free Energy from Thin Air! http://www.instructables.com/id/Free-Energy-From-Thin-Air/
Free Energy from Thin Air! - More DIY How To Projects]]> https://cdn.instructables.com/FNN/C7P1/IOKBVZ5C/FNNC7P1IOKBVZ5C.SQUARE2.jpg https://cdn.instructables.com/FNN/C7P1/IOKBVZ5C/FNNC7P1IOKBVZ5C.SQUARE.jpg https://cdn.instructables.com/FNN/C7P1/IOKBVZ5C/FNNC7P1IOKBVZ5C.SMALL.jpg DrewPaulDesigns "Free energy from the air?, Yea, right!" Sardonic skepticism was my first reaction to this unusual concept, as well.Though, its not so far out there, in fact. Light can be converted to DC current with solar panels, electricity can be converted to magnetism as I did in my last article, in a microphon...
By: DrewPaulDesigns

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Tue, 24 May 2016 03:21:51 PDT
Ammo Can Power Pack http://www.instructables.com/id/Ammo-Can-Power-Pack/
Ammo Can Power Pack - More DIY How To Projects]]> https://cdn.instructables.com/FCC/NWOC/GD2J1Y2Y/FCCNWOCGD2J1Y2Y.SQUARE2.jpg https://cdn.instructables.com/FCC/NWOC/GD2J1Y2Y/FCCNWOCGD2J1Y2Y.SQUARE.jpg https://cdn.instructables.com/FCC/NWOC/GD2J1Y2Y/FCCNWOCGD2J1Y2Y.SMALL.jpg zcshiner Electricity is everywhere.  Sometimes.  The idea came about between a few friends and myself to build a portable "power pack" so we could power our things wherever we go. I ended up creating a contraption that housed a 12 volt battery, inverter, and battery charger inside a watertight ammo box. ...
By: zcshiner

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Sun, 22 Aug 2010 12:01:09 PDT
DIY 9 volt battery connector for free http://www.instructables.com/id/DIY-9-volt-battery-connector-for-free/
DIY 9 volt battery connector for free - More DIY How To Projects]]> https://cdn.instructables.com/FL1/XYOU/HD4VHR8D/FL1XYOUHD4VHR8D.SQUARE2.jpg https://cdn.instructables.com/FL1/XYOU/HD4VHR8D/FL1XYOUHD4VHR8D.SQUARE.jpg https://cdn.instructables.com/FL1/XYOU/HD4VHR8D/FL1XYOUHD4VHR8D.SMALL.jpg miceuz Usually cheap 9 volt battery connectors that you can buy are flimsy and don't last for long. Here is a way to make yourself a battery terminal that will last. Oh, did I mention it's almost free? You will need: * dead 9 volt battery * pliers * sharp knife * soldering iron + solder + flux * red and ...
By: miceuz

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Sat, 6 Oct 2012 03:08:27 PDT
Portable speakers / Speakers on battery http://www.instructables.com/id/Portable-speakers-Speakers-on-battery/
Portable speakers / Speakers on battery - More DIY How To Projects]]> https://cdn.instructables.com/F4Q/IYJS/FVHQG9FF/F4QIYJSFVHQG9FF.SQUARE2.jpg https://cdn.instructables.com/F4Q/IYJS/FVHQG9FF/F4QIYJSFVHQG9FF.SQUARE.jpg https://cdn.instructables.com/F4Q/IYJS/FVHQG9FF/F4QIYJSFVHQG9FF.SMALL.jpg st0rm Hi guys.This is my first instructable. Enjoy!So today I am gong to show you how to make from old pc speakers to speakers on battery.It's pretty basic and I have a lot of pictures. ;) Items you need The tools you need: -Speakers ...
By: st0rm

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Wed, 3 Jun 2009 08:29:45 PDT
Fitting the MaxAmps 2600mAh extended battery to the A R Drone http://www.instructables.com/id/Fitting-the-MaxAmps-2600mAh-extended-battery-to-th/
Fitting the MaxAmps 2600mAh extended battery to the A R Drone - More DIY How To Projects]]> https://cdn.instructables.com/FRH/GN31/GJQEIKZQ/FRHGN31GJQEIKZQ.SQUARE2.jpg https://cdn.instructables.com/FRH/GN31/GJQEIKZQ/FRHGN31GJQEIKZQ.SQUARE.jpg https://cdn.instructables.com/FRH/GN31/GJQEIKZQ/FRHGN31GJQEIKZQ.SMALL.jpg gtoal The A R Drone comes with a 1000mAh Lipo battery, but the short flight time of this cell quickly proves frustrating. At the time of writing, there is only one significantly larger capacity battery that I'm aware of that is ready to use, which is the MaxAmps 2600mAh pack sold at their site and through...
By: gtoal

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Sun, 20 Feb 2011 14:28:52 PST
Bluetooth Battery Portable Speaker http://www.instructables.com/id/Bluetooth-Battery-Portable-Speaker/
Bluetooth Battery Portable Speaker - More DIY How To Projects]]> https://cdn.instructables.com/F0B/J2QF/IDCXFNP0/F0BJ2QFIDCXFNP0.SQUARE2.jpg https://cdn.instructables.com/F0B/J2QF/IDCXFNP0/F0BJ2QFIDCXFNP0.SQUARE.jpg https://cdn.instructables.com/F0B/J2QF/IDCXFNP0/F0BJ2QFIDCXFNP0.SMALL.jpg dnibeck As with most of my projects, the inspiration was borrowed and the final project is different then what I had originally planned. I started out with wanting to make an ammo can speaker. Unfortunately (actually fortunately), I didn't have a 50 cal case. My can was too small. I decided to use a pla...
By: dnibeck

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Sat, 15 Aug 2015 16:22:41 PDT
Easy How to charge a cellphone battery from other cellphone http://www.instructables.com/id/Easy-How-to-charge-a-cellphone-battery-from-other-/
Easy How to charge a cellphone battery from other cellphone - More DIY How To Projects]]> https://cdn.instructables.com/F66/38Y4/HA4MGP7S/F6638Y4HA4MGP7S.SQUARE2.jpg https://cdn.instructables.com/F66/38Y4/HA4MGP7S/F6638Y4HA4MGP7S.SQUARE.jpg https://cdn.instructables.com/F66/38Y4/HA4MGP7S/F6638Y4HA4MGP7S.SMALL.jpg animes25 ok here is the problem: Imagine that you have 2 celular phones, you know they have different chargers, suddenly your favorite celular phone charger explodes, dissapear or even if you connect your charger to your favorite phone, the phone says is not charging your battery is diying! and you NEED to ...
By: animes25

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Tue, 4 Dec 2012 07:37:40 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]]> https://cdn.instructables.com/FCG/BL3C/H4AGIRJL/FCGBL3CH4AGIRJL.SQUARE2.jpg https://cdn.instructables.com/FCG/BL3C/H4AGIRJL/FCGBL3CH4AGIRJL.SQUARE.jpg https://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
DIY iPhone controller for Raspberry-Pi (OSC) http://www.instructables.com/id/R-Pi-control-Android-iPhone-via-OSC/
DIY iPhone controller for Raspberry-Pi (OSC) - More DIY How To Projects]]> https://cdn.instructables.com/FJJ/HMYR/HXCCLU1U/FJJHMYRHXCCLU1U.SQUARE2.jpg https://cdn.instructables.com/FJJ/HMYR/HXCCLU1U/FJJHMYRHXCCLU1U.SQUARE.jpg https://cdn.instructables.com/FJJ/HMYR/HXCCLU1U/FJJHMYRHXCCLU1U.SMALL.jpg Greg0reo To start off this project I would like to explain how all this will work. We will be using a form of communication called OSC (Open Sound Control) and an app called "TouchOSC" which is available on the Google Play and Apple app store, along with pyOSC. What we will do is the following:- Create a sui...
By: Greg0reo

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Tue, 1 Jul 2014 18:04:26 PDT
DIY Invisible Fence battery http://www.instructables.com/id/DIY-Invisible-Fence-battery/
DIY Invisible Fence battery - More DIY How To Projects]]> https://cdn.instructables.com/FID/L4D7/UYZEP27VWL4/FIDL4D7UYZEP27VWL4.SQUARE2.jpg https://cdn.instructables.com/FID/L4D7/UYZEP27VWL4/FIDL4D7UYZEP27VWL4.SQUARE.jpg https://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
Modular Arduino Power Cube http://www.instructables.com/id/Modular-Arduino-Power-Cube/
Modular Arduino Power Cube - More DIY How To Projects]]> https://cdn.instructables.com/FDI/F63Y/IMDZBU0J/FDIF63YIMDZBU0J.SQUARE2.jpg https://cdn.instructables.com/FDI/F63Y/IMDZBU0J/FDIF63YIMDZBU0J.SQUARE.jpg https://cdn.instructables.com/FDI/F63Y/IMDZBU0J/FDIF63YIMDZBU0J.SMALL.jpg EvanKale Lithium ion (Li-ion) batteries can work wonders for portable Arduino projects.Chances are, you probably have tons of them lying around that you're not making use of. You can salvage them from many rechargeable electronics such as cellphones, cameras, MP3 players, etc.An annoyance I came across when ...
By: EvanKale

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Thu, 31 Mar 2016 08:56:20 PDT
Convert a battery powered LED lamp to USB power. http://www.instructables.com/id/Convert-a-battery-powered-LED-lamp-to-USB-power/
Convert a battery powered LED lamp to USB power. - More DIY How To Projects]]> https://cdn.instructables.com/F3S/VV3W/H0OJ28IT/F3SVV3WH0OJ28IT.SQUARE2.jpg https://cdn.instructables.com/F3S/VV3W/H0OJ28IT/F3SVV3WH0OJ28IT.SQUARE.jpg https://cdn.instructables.com/F3S/VV3W/H0OJ28IT/F3SVV3WH0OJ28IT.SMALL.jpg persolus Greetings, My desk at work has a hutch on it with a window opposite, and after a phone system change we lost the backlit LCD panels on our phones.  Since my phone is positioned under my hutch and I didn't care to rearrange my desk, I put a cheap battery LED lamp above the phone to illuminate it so ...
By: persolus

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Thu, 5 Apr 2012 23:34:48 PDT
How to install Commercial Grade Resilient Tile http://www.instructables.com/id/How-to-install-Commercial-Grade-Resilient-Tile/
How to install Commercial Grade Resilient Tile - More DIY How To Projects]]> https://cdn.instructables.com/F43/QMLQ/P3XEV2ZIURI/F43QMLQP3XEV2ZIURI.SQUARE2.jpg https://cdn.instructables.com/F43/QMLQ/P3XEV2ZIURI/F43QMLQP3XEV2ZIURI.SQUARE.jpg https://cdn.instructables.com/F43/QMLQ/P3XEV2ZIURI/F43QMLQP3XEV2ZIURI.SMALL.jpg Zombie Stomp This Instructable shows you how to install Resilient tile, also known as "Vinyl Composition" or "Asphalt" tile, the type found in most commercial settings, like grocery stores. It's probably easier than you think! Do the math and get supplies. I measured the length and width of the kitchen, rou...
By: Zombie Stomp

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Fri, 15 Dec 2006 06:06:21 PST
Oral-B Sonic Complete Toothbrush Battery Fix http://www.instructables.com/id/Oral-B-Sonic-Complete-Toothbrush-Battery-Fix/
Oral-B Sonic Complete Toothbrush Battery Fix - More DIY How To Projects]]> https://cdn.instructables.com/FMI/2LID/FXK6415N/FMI2LIDFXK6415N.SQUARE2.jpg https://cdn.instructables.com/FMI/2LID/FXK6415N/FMI2LIDFXK6415N.SQUARE.jpg https://cdn.instructables.com/FMI/2LID/FXK6415N/FMI2LIDFXK6415N.SMALL.jpg paulhogan This project shows you how to replace the batteries in an Oral-B Sonic Complete toothbrush. This is a great electric toothbrush, but Oral-B tells you to toss it when the internal rechargeable Ni-CD batteries die. Aside from the wastefulness of that, the toothbrush costs about $90. So, when my fat...
By: paulhogan

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Wed, 29 Jul 2009 17:54:39 PDT
24V Battery Charger Schematic http://www.instructables.com/id/24V-Battery-Charger-Schematic/
24V Battery Charger Schematic - More DIY How To Projects]]> https://cdn.instructables.com/FL6/IW97/GYN92ENH/FL6IW97GYN92ENH.SQUARE2.jpg https://cdn.instructables.com/FL6/IW97/GYN92ENH/FL6IW97GYN92ENH.SQUARE.jpg https://cdn.instructables.com/FL6/IW97/GYN92ENH/FL6IW97GYN92ENH.SMALL.jpg maxolous The battery charger is originally designed by me to meet the need of some who want a 24V battery charger. The charger is in three stages; the power source, current limiting and float charge stage. In this design, 240/24Vac(rms) transformer was used. After rectification and filtration i got about 30...
By: maxolous

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Thu, 3 Feb 2011 09:44:52 PST
DIY Arduino Battery Spot Welder http://www.instructables.com/id/DIY-Arduino-Battery-Spot-Welder/
DIY Arduino Battery Spot Welder - More DIY How To Projects]]> https://cdn.instructables.com/FEJ/579B/IL2C9CSU/FEJ579BIL2C9CSU.SQUARE2.jpg https://cdn.instructables.com/FEJ/579B/IL2C9CSU/FEJ579BIL2C9CSU.SQUARE.jpg https://cdn.instructables.com/FEJ/579B/IL2C9CSU/FEJ579BIL2C9CSU.SMALL.jpg KaeptnBalu An Arduino Nano based Spot Welder for battery welding This Spot Welder can be used to weld 18650 batteries. It needs a 7-12V power source (12V recommended) and uses a 12V car battery as welding current supply. Typically one 45Ah battery delivers enough current to get good welds with 0.15mm nicke...
By: KaeptnBalu

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Fri, 26 Feb 2016 19:07:36 PST
Portable Adjustable Mini Powersupply http://www.instructables.com/id/Portable-Adjustable-Mini-Powersupply/
Portable Adjustable Mini Powersupply - More DIY How To Projects]]> https://cdn.instructables.com/FNL/UZW2/ILIAWKRY/FNLUZW2ILIAWKRY.SQUARE2.jpg https://cdn.instructables.com/FNL/UZW2/ILIAWKRY/FNLUZW2ILIAWKRY.SQUARE.jpg https://cdn.instructables.com/FNL/UZW2/ILIAWKRY/FNLUZW2ILIAWKRY.SMALL.jpg Mixed Output A BIG HELLO! and welcome to Mixed Outputs first instructable.As most of my project involve electronics of some sort, having a good power supply is essential to be able to meet the demand of different power requirements. So I built me a bench-top power supply from an old ATX power supply Unit (PSU) t...
By: Mixed Output

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Tue, 8 Mar 2016 03:52:02 PST
220V HOMEMADE PORTABLE POWER INVERTER http://www.instructables.com/id/220V-HOMEMADE-PORTABLE-POWER-INVERTER/
220V HOMEMADE PORTABLE POWER INVERTER - More DIY How To Projects]]> https://cdn.instructables.com/FQW/4V9D/IKLHX21Y/FQW4V9DIKLHX21Y.SQUARE2.jpg https://cdn.instructables.com/FQW/4V9D/IKLHX21Y/FQW4V9DIKLHX21Y.SQUARE.jpg https://cdn.instructables.com/FQW/4V9D/IKLHX21Y/FQW4V9DIKLHX21Y.SMALL.jpg vina1991 Hello friendsThis is a tutorial about “How to make a 220V portable power inverter” This inverter is capable to power CFLs,tube lights,dc fan ext. it can handle up to 150W.even you can charge your laptop and mobile Note: this is a 220v, 50Hz square wave inverter The Inverter First things first. yo...
By: vina1991

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Sat, 13 Feb 2016 23:52:59 PST
DIY 9v Usb Ipod, Cellphone, Mp3 Portable Charger! Very EASY! http://www.instructables.com/id/DIY-9v-Usb-Ipod-Cellphone-Mp3-Portable-Charger-/
DIY 9v Usb Ipod, Cellphone, Mp3 Portable Charger! Very EASY! - More DIY How To Projects]]> https://cdn.instructables.com/FDE/TAUZ/FKX1CYY1/FDETAUZFKX1CYY1.SQUARE2.jpg https://cdn.instructables.com/FDE/TAUZ/FKX1CYY1/FDETAUZFKX1CYY1.SQUARE.jpg https://cdn.instructables.com/FDE/TAUZ/FKX1CYY1/FDETAUZFKX1CYY1.SMALL.jpg chazy Have you haver need energy for charging your mp3, cellphone, etc. when you're out of home?!I had.. So i decide to describe how to build your portable charger.I hope to be useful.SORRY FOR MY ENGLISH, I'M ITALIAN! What you need WHAT YOU NEED: - 5v regulator (i used a 7805) - Small piece of velcr...
By: chazy

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Wed, 10 Sep 2008 11:43:04 PDT
Earth battery. http://www.instructables.com/id/Earth-battery/
Earth battery. - More DIY How To Projects]]> https://cdn.instructables.com/F3P/XWUV/GPBD4D6X/F3PXWUVGPBD4D6X.SQUARE2.jpg https://cdn.instructables.com/F3P/XWUV/GPBD4D6X/F3PXWUVGPBD4D6X.SQUARE.jpg https://cdn.instructables.com/F3P/XWUV/GPBD4D6X/F3PXWUVGPBD4D6X.SMALL.jpg Computothought Earth batteries have been used for centuries, but it more recent times they were used in the 1800's to power telegraph stations. In this instructable we will try to replicate the earth battery in two forms. First as a single cell and then as multiple cells. How successful will we be? Will it be free...
By: Computothought

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Sat, 3 Sep 2011 11:01:35 PDT
Arduino powered Solar Battery Charger http://www.instructables.com/id/Arduino-powered-Solar-Battery-Charger/
Arduino powered Solar Battery Charger - More DIY How To Projects]]> https://cdn.instructables.com/F5S/II3C/HZQTDLQS/F5SII3CHZQTDLQS.SQUARE2.jpg https://cdn.instructables.com/F5S/II3C/HZQTDLQS/F5SII3CHZQTDLQS.SQUARE.jpg https://cdn.instructables.com/F5S/II3C/HZQTDLQS/F5SII3CHZQTDLQS.SMALL.jpg skygate The following design is for a Solar battery charger ran by an Arduino Nano. It can handle a standard lead acid 12V battery, like for a scooter or a car. Furthermore the design has been tested and runs with 90% efficiency under 70ᵒC (158ᵒF). It can take up to 20V on the input site of the charger. Al...
By: skygate

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Sat, 6 Sep 2014 10:52:55 PDT
How to Make a Battery Out of Mud http://www.instructables.com/id/An-Easy-Cheap-Soil-based-Microbial-Fuel-Cell/
How to Make a Battery Out of Mud - More DIY How To Projects]]> https://cdn.instructables.com/FDW/QM3I/GQO92IT6/FDWQM3IGQO92IT6.SQUARE2.jpg https://cdn.instructables.com/FDW/QM3I/GQO92IT6/FDWQM3IGQO92IT6.SQUARE.jpg https://cdn.instructables.com/FDW/QM3I/GQO92IT6/FDWQM3IGQO92IT6.SMALL.jpg 20StoryLincoln While trying to make a microbial fuel cell apparently I stumbled upon how to make an Earth battery, which is something whose existence I really had no clue about until I made one. While the current it generates is pretty much non-existent I've found that several of these in series are capable of dim...
By: 20StoryLincoln

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Sat, 2 Jul 2011 09:28:31 PDT
14 amp hour / 140 watt hour lithium ion battery http://www.instructables.com/id/14-amp-hour-140-watt-hour-lithium-ion-battery/
14 amp hour / 140 watt hour lithium ion battery - More DIY How To Projects]]> https://cdn.instructables.com/FB7/VAOU/H1JUJPUX/FB7VAOUH1JUJPUX.SQUARE2.jpg https://cdn.instructables.com/FB7/VAOU/H1JUJPUX/FB7VAOUH1JUJPUX.SQUARE.jpg https://cdn.instructables.com/FB7/VAOU/H1JUJPUX/FB7VAOUH1JUJPUX.SMALL.jpg Noblenutria This is a 1S14P lithium ion pack made out of 18650s found in laptops.  Each 18650 cell is 2 amp hours or 10 watt hours.  14 18650s in parallel is 140 watt hours and 28 amp hours.   I think the single biggest reason for following this instructable to the T is because by the end you will have a self ...
By: Noblenutria

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Sun, 6 May 2012 11:50:39 PDT
Silencing the Verizon Battery Alarm http://www.instructables.com/id/Silencing-the-Verizon-Battery-Alarm/
Silencing the Verizon Battery Alarm - More DIY How To Projects]]> https://cdn.instructables.com/FYR/VC4Q/I6T7TCHQ/FYRVC4QI6T7TCHQ.SQUARE2.jpg https://cdn.instructables.com/FYR/VC4Q/I6T7TCHQ/FYRVC4QI6T7TCHQ.SQUARE.jpg https://cdn.instructables.com/FYR/VC4Q/I6T7TCHQ/FYRVC4QI6T7TCHQ.SMALL.jpg DanielL18 In addition to cable television and internet service, Verizon provides land-line telephone service. This service uses a voice over IP protocol, meaning it uses the internet service to deliver voice communications. To ensure uninterrupted land-line telephone service Verizon is required to provide a b...
By: DanielL18

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Tue, 3 Mar 2015 03:48:26 PST
portable 9V to 5V battery http://www.instructables.com/id/portable-9V-to-5V-battery/
portable 9V to 5V battery - More DIY How To Projects]]> https://cdn.instructables.com/F1B/WARE/G79D45JY/F1BWAREG79D45JY.SQUARE2.jpg https://cdn.instructables.com/F1B/WARE/G79D45JY/F1BWAREG79D45JY.SQUARE.jpg https://cdn.instructables.com/F1B/WARE/G79D45JY/F1BWAREG79D45JY.SMALL.jpg godofal checklist, parts and tools. parts: - 9V battery (duh) - 9V battery clip (duh again) - 5V regulator ( L7805 ) sparkfun $0.85 - a piece of proto board - 2x 1uF ceramic disk capacitor (this isnt really that exact, use about this value if you do not have it) - an aluminium heat dispenser (not sure...
By: godofal

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Sun, 28 Mar 2010 04:21:20 PDT
How to know a fake 18650 battery http://www.instructables.com/id/How-to-know-a-fake-18650-battery/
How to know a fake 18650 battery - More DIY How To Projects]]> https://cdn.instructables.com/FAW/NZ23/HZI90O5V/FAWNZ23HZI90O5V.SQUARE2.jpg https://cdn.instructables.com/FAW/NZ23/HZI90O5V/FAWNZ23HZI90O5V.SQUARE.jpg https://cdn.instructables.com/FAW/NZ23/HZI90O5V/FAWNZ23HZI90O5V.SMALL.jpg danleow An average genuine 18650 batteries will weigh about 45g and no nothing less than 42g. You can see I have a fake 18650 battery in the pic weigh 32g only and the genuine 18650 battery weight 45g. Some genuine 18650 battery can weigh more than 50g. Good brands will tell you the weight of the battery. Y...
By: danleow

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Sun, 31 Aug 2014 18:15:24 PDT