Instructables: exploring - technology - battery - popular http://www.instructables.com Sat, 13 Feb 2016 07:44:03 PST BLOX v1.01 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]]> http://cdn.instructables.com/FYR/VC4Q/I6T7TCHQ/FYRVC4QI6T7TCHQ.SQUARE2.jpg http://cdn.instructables.com/FYR/VC4Q/I6T7TCHQ/FYRVC4QI6T7TCHQ.SQUARE.jpg http://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]]> http://cdn.instructables.com/F1B/WARE/G79D45JY/F1BWAREG79D45JY.SQUARE2.jpg http://cdn.instructables.com/F1B/WARE/G79D45JY/F1BWAREG79D45JY.SQUARE.jpg http://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]]> http://cdn.instructables.com/FAW/NZ23/HZI90O5V/FAWNZ23HZI90O5V.SQUARE2.jpg http://cdn.instructables.com/FAW/NZ23/HZI90O5V/FAWNZ23HZI90O5V.SQUARE.jpg http://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
Electro shock device out of a 9V adapter http://www.instructables.com/id/Electro-shock-device-out-of-a-9V-adapter/
Electro shock device out of a 9V adapter - More DIY How To Projects]]> http://cdn.instructables.com/FJ0/7EXY/HLOC2OZ5/FJ07EXYHLOC2OZ5.SQUARE2.jpg http://cdn.instructables.com/FJ0/7EXY/HLOC2OZ5/FJ07EXYHLOC2OZ5.SQUARE.jpg http://cdn.instructables.com/FJ0/7EXY/HLOC2OZ5/FJ07EXYHLOC2OZ5.SMALL.jpg Tlaci18 Hi, This is an old version of this project, check out a brand new one! :) This is a shock device, what you can use as a taser, or a torture device. I have tried it, and I'm alive. The output voltage is about 600-1000 Volts in the maximum strenght. The power source is a 9V battery, so you don't have ...
By: Tlaci18

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Tue, 17 Sep 2013 08:44:13 PDT
Increase the capacity (runtime) of your laptop battery. http://www.instructables.com/id/Increase-the-capacity-runtime-of-your-laptop-bat/
Increase the capacity (runtime) of your laptop battery. - More DIY How To Projects]]> http://cdn.instructables.com/FCI/WKLD/F1OABR2M/FCIWKLDF1OABR2M.SQUARE2.jpg http://cdn.instructables.com/FCI/WKLD/F1OABR2M/FCIWKLDF1OABR2M.SQUARE.jpg http://cdn.instructables.com/FCI/WKLD/F1OABR2M/FCIWKLDF1OABR2M.SMALL.jpg xeijix Is your laptop battery dead? Is the runtime not long enough to get you through the day? Do you carry one of those huge external battery packs? This instructable is intended to show how one may replace the dead li-ion/li-poly cells of a laptop battery and how one may increase the capacity of the bat...
By: xeijix

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Tue, 15 May 2007 19:01:00 PDT
2.0 Portable Bluetooth Boombox http://www.instructables.com/id/20-Portable-Bluetooth-Boombox/
2.0 Portable Bluetooth Boombox - More DIY How To Projects]]> http://cdn.instructables.com/F16/7RJU/IJSXA0SW/F167RJUIJSXA0SW.SQUARE2.jpg http://cdn.instructables.com/F16/7RJU/IJSXA0SW/F167RJUIJSXA0SW.SQUARE.jpg http://cdn.instructables.com/F16/7RJU/IJSXA0SW/F167RJUIJSXA0SW.SMALL.jpg thappasahil This instructable is on building a 2.0 portable bluetooth Boombox.For this build I sourced parts locally as well as from China. In this build I've given two bass port at the bottom. The speaker is powered by a 12V 7Ah Sealed Lead Acid Battery and is having Bluetooth V2.0 + EDR connectivity. This mig...
By: thappasahil

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Mon, 25 Jan 2016 02:57:17 PST
Convert Your Old Laptop Battery Into a Power Bank http://www.instructables.com/id/Convert-Your-Old-Laptop-Battery-Into-a-Power-Bank/
Convert Your Old Laptop Battery Into a Power Bank - More DIY How To Projects]]> http://cdn.instructables.com/FQK/IONE/IK1HRDC4/FQKIONEIK1HRDC4.SQUARE2.jpg http://cdn.instructables.com/FQK/IONE/IK1HRDC4/FQKIONEIK1HRDC4.SQUARE.jpg http://cdn.instructables.com/FQK/IONE/IK1HRDC4/FQKIONEIK1HRDC4.SMALL.jpg GreatScottLab In this project I will show you how to convert a battery from an old laptop into a power bank which can charge an ordinary phone 4 to 5 times with a single charge. Let's get started! Watch the video! The video gives you a basic overview which steps are necessary to create your own power bank. But...
By: GreatScottLab

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Sun, 31 Jan 2016 07:58:22 PST
Self Sufficient Arduino Board http://www.instructables.com/id/Self-Sufficient-Arduino-Board/
Self Sufficient Arduino Board - More DIY How To Projects]]> http://cdn.instructables.com/FIH/PPF1/F82EU51W/FIHPPF1F82EU51W.SQUARE2.jpg http://cdn.instructables.com/FIH/PPF1/F82EU51W/FIHPPF1F82EU51W.SQUARE.jpg http://cdn.instructables.com/FIH/PPF1/F82EU51W/FIHPPF1F82EU51W.SMALL.jpg p2man This is a self sufficient Arduino board, which is powered by harnessing solar power and using a 9V rechargeable battery. It is perfect for anyone who is interested in doing Arduino projects that do not require a computer or any power supply. You can take this to the most remote places for any projec...
By: p2man

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Wed, 24 Oct 2007 02:10:20 PDT
How to make a 9 volt battery http://www.instructables.com/id/How-to-make-a-9-volt-battery/
How to make a 9 volt battery - More DIY How To Projects]]> http://cdn.instructables.com/F68/1SYT/GPZAHH8V/F681SYTGPZAHH8V.SQUARE2.jpg http://cdn.instructables.com/F68/1SYT/GPZAHH8V/F681SYTGPZAHH8V.SQUARE.jpg http://cdn.instructables.com/F68/1SYT/GPZAHH8V/F681SYTGPZAHH8V.SMALL.jpg Paint_Man Ever run out of 9 volt batteries, or just need a quick fix for your projects? I will show you how to make a 9 volt battery. I guarantee you this has more capacity as any other 9 volt battery you would find in a store! This is my first Instructable. What you need: You will need 6 AA Batteries, al...
By: Paint_Man

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Tue, 12 Jul 2011 03:45:47 PDT
MASLOW: an Open WiFi Detector with ESP8266 http://www.instructables.com/id/MASLOW-an-Open-WiFi-Detector-With-ESP8266/
MASLOW: an Open WiFi Detector with ESP8266 - More DIY How To Projects]]> http://cdn.instructables.com/FVX/49ZS/IJ1PJV9D/FVX49ZSIJ1PJV9D.SQUARE2.jpg http://cdn.instructables.com/FVX/49ZS/IJ1PJV9D/FVX49ZSIJ1PJV9D.SQUARE.jpg http://cdn.instructables.com/FVX/49ZS/IJ1PJV9D/FVX49ZSIJ1PJV9D.SMALL.jpg sabas1080 English/EspañolHola amigos en esta ocasión le voy a enseñar como hacer un detector de redes abiertas con el modulo WiFi ESP8266, este detector nos notifica cuando una red WiFi cerca de nosotros esta abierta o no tiene cifrado WEP (que casi es lo mismo que abierta), cuando el ESP8266 detecte uno de e...
By: sabas1080

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Tue, 5 Jan 2016 16:36:49 PST
Magnet Car http://www.instructables.com/id/Magnet-Car/
Magnet Car - More DIY How To Projects]]> http://cdn.instructables.com/F7M/2H3U/IJ1RT6UD/F7M2H3UIJ1RT6UD.SQUARE2.jpg http://cdn.instructables.com/F7M/2H3U/IJ1RT6UD/F7M2H3UIJ1RT6UD.SQUARE.jpg http://cdn.instructables.com/F7M/2H3U/IJ1RT6UD/F7M2H3UIJ1RT6UD.SMALL.jpg KJMagnetics Here is a quick, easy way to create a self-propelled car using simple household items! All it takes is some magnets, a AA battery, and some aluminum foil! Find the Supplies As previously mentioned, you only need three things to complete the project-- a few magnets, a AA battery, and aluminum foi...
By: KJMagnetics

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Wed, 6 Jan 2016 10:59:01 PST
USB Li-ion battery charger http://www.instructables.com/id/USB-Li-ion-battery-charger/
USB Li-ion battery charger - More DIY How To Projects]]> http://cdn.instructables.com/FSM/FBM0/CZZEV1BEP2L/FSMFBM0CZZEV1BEP2L.SQUARE2.jpg http://cdn.instructables.com/FSM/FBM0/CZZEV1BEP2L/FSMFBM0CZZEV1BEP2L.SQUARE.jpg http://cdn.instructables.com/FSM/FBM0/CZZEV1BEP2L/FSMFBM0CZZEV1BEP2L.SMALL.gif neelandan This is a charger for lithium ion batteries which takes its power from the USB port of a computer. It uses the MCP73861 or MCP73863 Li-ion battery charger chip manufactured by Microchip. The USB power connector A piece of edge connector hacked off an ancient ethernet board serves as the power c...
By: neelandan

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Tue, 28 Nov 2006 00:59:50 PST
Battery float charger http://www.instructables.com/id/Battery-Float-Charger/
Battery float charger - More DIY How To Projects]]> http://cdn.instructables.com/F8P/8YH1/IIUKCKP3/F8P8YH1IIUKCKP3.SQUARE2.jpg http://cdn.instructables.com/F8P/8YH1/IIUKCKP3/F8P8YH1IIUKCKP3.SQUARE.jpg http://cdn.instructables.com/F8P/8YH1/IIUKCKP3/F8P8YH1IIUKCKP3.SMALL.jpg Nobilis Ensuring your vehicle batteries are always in good condition is important.Preserving of our environment is/should be mandatory.This project supports both purpose. It recycles an outdated feature phone wall adapter to create a lead-acid battery float charger. The wall adapter gets a new life and the ...
By: Nobilis

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Thu, 31 Dec 2015 14:56:13 PST
How to measure the internal resistance of a battery? http://www.instructables.com/id/How-to-measure-the-internal-resistance-of-a-batter/
How to measure the internal resistance of a battery? - More DIY How To Projects]]> http://cdn.instructables.com/FH2/73YO/I45HNW2Y/FH273YOI45HNW2Y.SQUARE2.jpg http://cdn.instructables.com/FH2/73YO/I45HNW2Y/FH273YOI45HNW2Y.SQUARE.jpg http://cdn.instructables.com/FH2/73YO/I45HNW2Y/FH273YOI45HNW2Y.SMALL.jpg eafindme * The schematic is taken from other source.Wondering how well your battery can perform? Don't know how much current you can pull from your battery? Well you can get know to your battery more with a simple experiment. You only need few components to do it.Materials:- your battery(Lipo, lead acid, NiC...
By: eafindme

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Sat, 27 Dec 2014 18:48:19 PST
Renew Your Laptop Battery http://www.instructables.com/id/Renew-Your-Laptop-Battery/
Renew Your Laptop Battery - More DIY How To Projects]]> http://cdn.instructables.com/FK1/SZAP/GKXTX76J/FK1SZAPGKXTX76J.SQUARE2.jpg http://cdn.instructables.com/FK1/SZAP/GKXTX76J/FK1SZAPGKXTX76J.SQUARE.jpg http://cdn.instructables.com/FK1/SZAP/GKXTX76J/FK1SZAPGKXTX76J.SMALL.jpg waqasjamil Change Your Laptop Battery cells instead of buying expensive new battery...
By: waqasjamil

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Mon, 7 Mar 2011 04:29:34 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
AMPLFY - The Coolest DIY Speaker Ever! http://www.instructables.com/id/AMPLFY-the-Coolest-DIY-Speaker-Ever/
AMPLFY - The Coolest DIY Speaker Ever! - More DIY How To Projects]]> http://cdn.instructables.com/FBC/ZWOW/II21QJ1P/FBCZWOWII21QJ1P.SQUARE2.jpg http://cdn.instructables.com/FBC/ZWOW/II21QJ1P/FBCZWOWII21QJ1P.SQUARE.jpg http://cdn.instructables.com/FBC/ZWOW/II21QJ1P/FBCZWOWII21QJ1P.SMALL.jpg Baclair Do you want to know how to build the best portable speaker, which looks great and sounds even better? This portable speaker will out perform most portable Bluetooth speakers on the market. This speaker is perfect for fishing, camping, the beach, worksites, parties and especially festivals.This Instr...
By: Baclair

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Sat, 12 Dec 2015 06:04:15 PST
Build a World's Smallest Electronic Shocker! version 2.5 http://www.instructables.com/id/How-to-build-the-worlds-smallest-shocker-wLED/
Build a World's Smallest Electronic Shocker! version 2.5 - More DIY How To Projects]]> http://cdn.instructables.com/FHF/1GAN/FUVSG9SE/FHF1GANFUVSG9SE.SQUARE2.jpg http://cdn.instructables.com/FHF/1GAN/FUVSG9SE/FHF1GANFUVSG9SE.SQUARE.jpg http://cdn.instructables.com/FHF/1GAN/FUVSG9SE/FHF1GANFUVSG9SE.SMALL.jpg Plasmana It is good to know if the tiny shocker is on or not, by adding a wonderful invention called the "LED", so you don't risk get bitten by the shocker again!Disclaimer: This shocker can be dangerous if used improperly, it gives out about 400 to 450 volts, so I am NOT responsible if you or anybody are in...
By: Plasmana

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Fri, 22 May 2009 12:09:45 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
Battery Powered LED Christmas Lights http://www.instructables.com/id/Battery-Powered-LED-Christmas-Lights/
Battery Powered LED Christmas Lights - More DIY How To Projects]]> http://cdn.instructables.com/FSU/K2SY/FNNKD1ZN/FSUK2SYFNNKD1ZN.SQUARE2.jpg http://cdn.instructables.com/FSU/K2SY/FNNKD1ZN/FSUK2SYFNNKD1ZN.SQUARE.jpg http://cdn.instructables.com/FSU/K2SY/FNNKD1ZN/FSUK2SYFNNKD1ZN.SMALL.jpg Sunbanks Christmas lights are good for more than just decorating your tree. You could make a sparkleball with them. But what if you want to hang it from your ceiling? You would have to plug the lights into an outlet and I don't know about you but I don't have outlets in my ceiling. So why not make them batte...
By: Sunbanks

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Sun, 23 Nov 2008 10:59:55 PST
DIY Bottle Cap Flashlight http://www.instructables.com/id/DIY-Bottle-Cap-Flashlight/
DIY Bottle Cap Flashlight - More DIY How To Projects]]> http://cdn.instructables.com/F4M/PQA4/IHDTB8W4/F4MPQA4IHDTB8W4.SQUARE2.jpg http://cdn.instructables.com/F4M/PQA4/IHDTB8W4/F4MPQA4IHDTB8W4.SQUARE.jpg http://cdn.instructables.com/F4M/PQA4/IHDTB8W4/F4MPQA4IHDTB8W4.SMALL.jpg ShiftyTips Yes this is a flashlight built in a bottle cap :)I thought that would be funny to turn a regular cap into a flashlight nothing more only that can I do it?And yes I made it that was a long journey with a lot of attempts!But If you stay with me you can make your own ;)So let's start... Watch the vid...
By: ShiftyTips

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Tue, 24 Nov 2015 12:35:12 PST
Arduino low Power Project. http://www.instructables.com/id/Arduino-low-Project-and-code/
Arduino low Power Project. - More DIY How To Projects]]> http://cdn.instructables.com/F67/2MGV/HYNYTVYX/F672MGVHYNYTVYX.SQUARE2.jpg http://cdn.instructables.com/F67/2MGV/HYNYTVYX/F672MGVHYNYTVYX.SQUARE.jpg http://cdn.instructables.com/F67/2MGV/HYNYTVYX/F672MGVHYNYTVYX.SMALL.jpg Rustie0125 Hi Ladies and Gents I recently decided that I will investigate the Arduino Sleep Library and see how long I can get an Arduino to run of a single N size1.5v Battery. Yes ! of a 1.5V battery. if you are interested here is what you will need. 1) N size battery 2) N size battery Holder 3) 1v- 3.3v Step...
By: Rustie0125

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Tue, 12 Aug 2014 10:54:49 PDT
Emergency charge a phone with a spare USB cable. http://www.instructables.com/id/Emergency-charge-a-phone-with-a-spare-USB-cable/
Emergency charge a phone with a spare USB cable. - More DIY How To Projects]]> http://cdn.instructables.com/F9D/6KB9/G91Y8ZMC/F9D6KB9G91Y8ZMC.SQUARE2.jpg http://cdn.instructables.com/F9D/6KB9/G91Y8ZMC/F9D6KB9G91Y8ZMC.SQUARE.jpg http://cdn.instructables.com/F9D/6KB9/G91Y8ZMC/F9D6KB9G91Y8ZMC.SMALL.jpg killerjackalope The other day my phone, which is on its last legs ran out of battery while I was expecting a few important calls and texts that would need replies fast, I was in tech with no phone charger and wouldn't be home for another six hours so I did this...  *WARNINGS* The course of action in this instructa...
By: killerjackalope

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Thu, 13 May 2010 11:32:56 PDT
iRobot Dead Battery Cell Fix http://www.instructables.com/id/iRobot-Dead-Battery-Cell-Fix/
iRobot Dead Battery Cell Fix - More DIY How To Projects]]> http://cdn.instructables.com/FGN/L3C8/FNNK6KDR/FGNL3C8FNNK6KDR.SQUARE2.jpg http://cdn.instructables.com/FGN/L3C8/FNNK6KDR/FGNL3C8FNNK6KDR.SQUARE.jpg http://cdn.instructables.com/FGN/L3C8/FNNK6KDR/FGNL3C8FNNK6KDR.SMALL.jpg sklarm A step-by-step tutorial showing how I repaired my $60 Dirt Dog battery with just a AA battery and some tape. We start off with a Dirt Dog battery that has a voltage of 15.87V which is indicative of a bad cell. When we complete the repair we are at 17.12V and that is without even charging the pack. ...
By: sklarm

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Sat, 22 Nov 2008 09:30:19 PST
Arduino door lock with password http://www.instructables.com/id/Arduino-door-lock-with-password/
Arduino door lock with password - More DIY How To Projects]]> http://cdn.instructables.com/F52/YYRR/I5JHRLKQ/F52YYRRI5JHRLKQ.SQUARE2.jpg http://cdn.instructables.com/F52/YYRR/I5JHRLKQ/F52YYRRI5JHRLKQ.SQUARE.jpg http://cdn.instructables.com/F52/YYRR/I5JHRLKQ/F52YYRRI5JHRLKQ.SMALL.jpg ibenkos In this project I mede an door lock (or box lock) that opens when you enter your password and press "#". The servo turns back to the position it was in after some seconds. PARTS & TOOLS For this project I used:* Arduino uno ( http://store.arduino.cc/index.php?main_page=produc... )* 4x4 matrix ke...
By: ibenkos

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Fri, 30 Jan 2015 08:20:16 PST
Build a 4 x AA USB Altoids Battery http://www.instructables.com/id/Build-a-4-x-AA-USB-Altoids-Battery/
Build a 4 x AA USB Altoids Battery - More DIY How To Projects]]> http://cdn.instructables.com/FHF/9VU9/M60EQZJHVAG/FHF9VU9M60EQZJHVAG.SQUARE2.jpg http://cdn.instructables.com/FHF/9VU9/M60EQZJHVAG/FHF9VU9M60EQZJHVAG.SQUARE.jpg http://cdn.instructables.com/FHF/9VU9/M60EQZJHVAG/FHF9VU9M60EQZJHVAG.SMALL.jpg Sitnalta Not long ago, I upgraded the hard drive in my laptop from an 80GB 4200RPM to a 120GB 5200RPM. Not wanting to let my old 2.5" drive go to waste, I bought a rather nice USB enclosure for it.Ah, but there was a catch. USB ports can only supply a maximum of 500 milliamps. The hard drive will need 550mA,...
By: Sitnalta

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Thu, 17 Aug 2006 20:49:23 PDT
The MacGyver Flashlight http://www.instructables.com/id/The-MacGyver-Flashlight/
The MacGyver Flashlight - More DIY How To Projects]]> http://cdn.instructables.com/F9U/H7N7/FQSWZCY5/F9UH7N7FQSWZCY5.SQUARE2.jpg http://cdn.instructables.com/F9U/H7N7/FQSWZCY5/F9UH7N7FQSWZCY5.SQUARE.jpg http://cdn.instructables.com/F9U/H7N7/FQSWZCY5/F9UH7N7FQSWZCY5.SMALL.jpg redbirds1 How to light a bulb with one wire and one battery. Obtain a battery, an electric wire, and a small light bulb That's right. You only need one wire. Strip both ends of the wire Remove the insulation covering the metal portion of the wire with a knife or wire stripper to expose the ends of the ...
By: redbirds1

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Mon, 9 Feb 2009 16:09:15 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
Turn an Old Mac Into a Home File Server! http://www.instructables.com/id/Turn-an-Old-Mac-Into-a-Home-File-Server/
Turn an Old Mac Into a Home File Server! - More DIY How To Projects]]> http://cdn.instructables.com/FV2/DZWI/FSSIHHMU/FV2DZWIFSSIHHMU.SQUARE2.jpg http://cdn.instructables.com/FV2/DZWI/FSSIHHMU/FV2DZWIFSSIHHMU.SQUARE.jpg http://cdn.instructables.com/FV2/DZWI/FSSIHHMU/FV2DZWIFSSIHHMU.SMALL.jpg Radioactive_Legos If you're a devoted Mac user like me, chances are, you'll have an old Mac sitting around somewhere, collecting dust. Don't give it away or send it off to be killed, repurpose it for use as a home file server! With simple configuration, you will be able to access its files wirelessly, from anywhere...
By: Radioactive_Legos

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Sat, 28 Mar 2009 18:20:01 PDT
Lemon Batteries: Lighting an LED with Lemons http://www.instructables.com/id/Lemon-Batteries-Lighting-an-LED-with-Lemons/
Lemon Batteries: Lighting an LED with Lemons - More DIY How To Projects]]> http://cdn.instructables.com/FF3/YDB9/IFO94CEY/FF3YDB9IFO94CEY.SQUARE2.jpg http://cdn.instructables.com/FF3/YDB9/IFO94CEY/FF3YDB9IFO94CEY.SQUARE.jpg http://cdn.instructables.com/FF3/YDB9/IFO94CEY/FF3YDB9IFO94CEY.SMALL.jpg mhland Did you know you can light an LED using fruits and vegetables? For this experiment, you will need the following materials: 4 lemons or potatoes 4 galvanized nails 4 U. S. copper pennies (minted before 1982 due to the change in copper content) or 4 copper wires an LED light a knife 5 alligator test ...
By: mhland

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Mon, 12 Oct 2015 15:54:21 PDT
Double Voltage of your one AA Battery device http://www.instructables.com/id/Double-Voltage-of-your-AA-Battery/
Double Voltage of your one AA Battery device - More DIY How To Projects]]> http://cdn.instructables.com/FFM/Y3BN/FOD7QG1S/FFMY3BNFOD7QG1S.SQUARE2.jpg http://cdn.instructables.com/FFM/Y3BN/FOD7QG1S/FFMY3BNFOD7QG1S.SQUARE.jpg http://cdn.instructables.com/FFM/Y3BN/FOD7QG1S/FFMY3BNFOD7QG1S.SMALL.jpg dragonbtv A very simple method to get double output voltage within the space of a single AA battery. Useful for strengthen your single battery powered device, eg. flash light, nose hair trimer and etc. reason Sometimes you are not satisfy with the POWER of your single battery powered device, such as your d...
By: dragonbtv

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Fri, 5 Dec 2008 16:35:33 PST
Soldering Directly Onto a Battery http://www.instructables.com/id/Soldering-Directly-Onto-a-Battery/
Soldering Directly Onto a Battery - More DIY How To Projects]]> http://cdn.instructables.com/FRQ/58D7/GNFSJZ5H/FRQ58D7GNFSJZ5H.SQUARE2.jpg http://cdn.instructables.com/FRQ/58D7/GNFSJZ5H/FRQ58D7GNFSJZ5H.SQUARE.jpg http://cdn.instructables.com/FRQ/58D7/GNFSJZ5H/FRQ58D7GNFSJZ5H.SMALL.jpg aduy In my first instructable I needed to use an AA Battery to plate some copper onto a quarter, and I ran into an issue. I didn't have a battery holder, and I was too cheap to go out and buy one. So I scoured the internet looking for ways to solder a wire directly onto a battery and found nothing except...
By: aduy

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Thu, 12 May 2011 20:53:12 PDT
How to Build Your First RC Plane for Under $100 - Transmitter, Shipping, Battery, Charger, and Hardware Included http://www.instructables.com/id/How-to-Build-Your-First-RC-Plane-for-Under-100-Tra/
How to Build Your First RC Plane for Under $100 - Transmitter, Shipping, Battery, Charger, and Hardware Included - More DIY How To Projects]]> http://cdn.instructables.com/F3D/JDIE/IFISD0YT/F3DJDIEIFISD0YT.SQUARE2.jpg http://cdn.instructables.com/F3D/JDIE/IFISD0YT/F3DJDIEIFISD0YT.SQUARE.jpg http://cdn.instructables.com/F3D/JDIE/IFISD0YT/F3DJDIEIFISD0YT.SMALL.jpg blakehansen99 Let's face it: radio controlled planes are expensive, especially if you are new to the hobby. Cheaper options are appearing every day, but for the most part, hobby-grade planes come with a big price. Flite Test's speed build kits and electronics packs are an option, but can also be pricey when all t...
By: blakehansen99

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Thu, 8 Oct 2015 19:21:17 PDT
Refilling SLA's (Sealed Lead Acid battery), Like Refilling a Car Battery http://www.instructables.com/id/Refilling-SLAs-Sealed-Lead-Acid-battery/
Refilling SLA's (Sealed Lead Acid battery), Like Refilling a Car Battery - More DIY How To Projects]]> http://cdn.instructables.com/FSK/X4WA/FOD6S4AC/FSKX4WAFOD6S4AC.SQUARE2.jpg http://cdn.instructables.com/FSK/X4WA/FOD6S4AC/FSKX4WAFOD6S4AC.SQUARE.jpg http://cdn.instructables.com/FSK/X4WA/FOD6S4AC/FSKX4WAFOD6S4AC.SMALL.jpg thermoelectric Have any of your SLA's dried up?Are they low on water?Well if you answered yes to either of those questions, This Instructable is for youDISCLAIMERI TAKE NO RESPONSIBILITY FOR ANY SPILLAGE OF BATTERY ACID, INJURY, STUFFING UP A GOOD SLA ETC. Materials/Tools ToolsSafety Glasses (So you don't get m...
By: thermoelectric

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Fri, 5 Dec 2008 23:32:09 PST
12 Volt Battery Generator http://www.instructables.com/id/12-Volt-Battery-Generator/
12 Volt Battery Generator - More DIY How To Projects]]> http://cdn.instructables.com/FV9/NNKD/IEX4TR7G/FV9NNKDIEX4TR7G.SQUARE2.jpg http://cdn.instructables.com/FV9/NNKD/IEX4TR7G/FV9NNKDIEX4TR7G.SQUARE.jpg http://cdn.instructables.com/FV9/NNKD/IEX4TR7G/FV9NNKDIEX4TR7G.SMALL.jpg Solaron Inexpensive 12 volt back-up battery generator that is not hard to make. It will power what counts if the power goes out! Note: You must have a working knowledge of electricity and electrical circuits to do this project otherwise you could really hurt yourself.I've powered space heaters, refrigerator...
By: Solaron

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Fri, 25 Sep 2015 14:34:44 PDT
250 Class FPV Drone Under $350 http://www.instructables.com/id/250-Class-FPV-Drone-Under-350/
250 Class FPV Drone Under $350 - More DIY How To Projects]]> http://cdn.instructables.com/F14/3TWL/IEQXU9K5/F143TWLIEQXU9K5.SQUARE2.jpg http://cdn.instructables.com/F14/3TWL/IEQXU9K5/F143TWLIEQXU9K5.SQUARE.jpg http://cdn.instructables.com/F14/3TWL/IEQXU9K5/F143TWLIEQXU9K5.SMALL.jpg MoTinkerGNome So you want to build a first person view quad copter but don't know where to start? Well since you clicked this instructable I would say sit back get a pencil and paper out for notes and get ready to learn. This is going to be a long instructable, I am going to break down each system, documenting ...
By: MoTinkerGNome

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Sat, 19 Sep 2015 18:59:54 PDT
Super Simple Phone Charger http://www.instructables.com/id/Super-Simple-Phone-Charger/
Super Simple Phone Charger - More DIY How To Projects]]> http://cdn.instructables.com/FZU/C6A3/IEB8BZR9/FZUC6A3IEB8BZR9.SQUARE2.jpg http://cdn.instructables.com/FZU/C6A3/IEB8BZR9/FZUC6A3IEB8BZR9.SQUARE.jpg http://cdn.instructables.com/FZU/C6A3/IEB8BZR9/FZUC6A3IEB8BZR9.SMALL.jpg lonesoulsurfer This could possibly be one of the most simplest phone chargers you can make. I wanted to make a charger that could use a 9v battery to power-up my phone. The worst thing about having a phone charger which you charge via USB is you never remember to charge it! After looking through a few 'ibles I ...
By: lonesoulsurfer

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Thu, 10 Sep 2015 03:40:56 PDT
Arduino Battery Shield http://www.instructables.com/id/Arduino-Battery-Shield/
Arduino Battery Shield - More DIY How To Projects]]> http://cdn.instructables.com/FSB/TKUT/IEKJ7V63/FSBTKUTIEKJ7V63.SQUARE2.jpg http://cdn.instructables.com/FSB/TKUT/IEKJ7V63/FSBTKUTIEKJ7V63.SQUARE.jpg http://cdn.instructables.com/FSB/TKUT/IEKJ7V63/FSBTKUTIEKJ7V63.SMALL.jpg MarPok "Scotty, we need more Power!". This instructable is about making battery shield for Arduino. Material Material list: flat lithium battery (e.g. taken from old mobile phone) (I used battery for Huawei Ideos X5 U8800) Li-ion charger module with TP4056 (see on eBay) DC-to-DC step-up module, with V...
By: MarPok

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Tue, 15 Sep 2015 15:24:53 PDT
The BlackBOX-Super Fast Phone Charger (68% in 31 Minutes) http://www.instructables.com/id/The-BlackBOX-Super-Fast-Phone-Charger-68-in-31-Min/
The BlackBOX-Super Fast Phone Charger (68% in 31 Minutes) - More DIY How To Projects]]> http://cdn.instructables.com/FUD/FS0V/IE7JARND/FUDFS0VIE7JARND.SQUARE2.jpg http://cdn.instructables.com/FUD/FS0V/IE7JARND/FUDFS0VIE7JARND.SQUARE.jpg http://cdn.instructables.com/FUD/FS0V/IE7JARND/FUDFS0VIE7JARND.SMALL.jpg Imetomi Hi DIYers! Did ever hapenned with you that you hurried somewhere and your phone was discharged? I think your answer is YES. I heard about phones and charges that can be recharged in 30 seconds, this is awesome, but they have a special battery. My goal/target was to develop a device that is compatibl...
By: Imetomi

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Mon, 7 Sep 2015 10:03:57 PDT
Coke Can Phone Speaker http://www.instructables.com/id/Coke-Can-Phone-Speaker/
Coke Can Phone Speaker - More DIY How To Projects]]> http://cdn.instructables.com/F46/NYK2/IE7J5VS4/F46NYK2IE7J5VS4.SQUARE2.jpg http://cdn.instructables.com/F46/NYK2/IE7J5VS4/F46NYK2IE7J5VS4.SQUARE.jpg http://cdn.instructables.com/F46/NYK2/IE7J5VS4/F46NYK2IE7J5VS4.SMALL.jpg jsincn This instructable is a guide on how to build an amazingly small, powerful phone speaker inside a coke can. Total cost of this speaker is below 20$, excluding batteries and coke can of course. Advantages of this speaker include:LoudnessStereo Sound (vs. Mono found on cheap phones, etc.)Very Energy Ef...
By: jsincn

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Sun, 6 Sep 2015 06:17:32 PDT
How to make a fast blinking LED bike light http://www.instructables.com/id/How-to-make-a-fast-blinking-LED-bike-light/
How to make a fast blinking LED bike light - More DIY How To Projects]]> http://cdn.instructables.com/FSO/RHGU/FCEILKRX/FSORHGUFCEILKRX.SQUARE2.jpg http://cdn.instructables.com/FSO/RHGU/FCEILKRX/FSORHGUFCEILKRX.SQUARE.jpg http://cdn.instructables.com/FSO/RHGU/FCEILKRX/FSORHGUFCEILKRX.SMALL.jpg comodore In this Instructable I will show you how to make a simple fast blinking LED light that you can attach to your bike or any where you want. It blinks more than 3 times in a second. It is cheaper to make one than to buy one. You can make it whit your favorite LED color,red,green,blue,yellow,RBG... Th...
By: comodore

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Sat, 9 Feb 2008 13:00:46 PST
Powerfull Portable Bluetooth Speaker 2x5W http://www.instructables.com/id/Powerfull-Portable-Bluetooth-Speaker-2x5W/
Powerfull Portable Bluetooth Speaker 2x5W - More DIY How To Projects]]> http://cdn.instructables.com/FU5/IPKB/IDTAXQ8I/FU5IPKBIDTAXQ8I.SQUARE2.jpg http://cdn.instructables.com/FU5/IPKB/IDTAXQ8I/FU5IPKBIDTAXQ8I.SQUARE.jpg http://cdn.instructables.com/FU5/IPKB/IDTAXQ8I/FU5IPKBIDTAXQ8I.SMALL.jpg bartroosen Bluetooth SpeakerMake your own powerfull Bluetooth Speaker with some extra features, easy explained, cheap and handy to use for less then 15$. Maybe you have some components which you don't need to buy like 5W speakers and some lithium batteries to make it less expensive like I did. In the following...
By: bartroosen

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Thu, 27 Aug 2015 02:01:15 PDT
How to save battery on iPod touch/iPhone http://www.instructables.com/id/How-to-save-battery-on-iPod-touchiPhone/
How to save battery on iPod touch/iPhone - More DIY How To Projects]]> http://cdn.instructables.com/F0V/T2AI/GXDJ40NZ/F0VT2AIGXDJ40NZ.SQUARE2.jpg http://cdn.instructables.com/F0V/T2AI/GXDJ40NZ/F0VT2AIGXDJ40NZ.SQUARE.jpg http://cdn.instructables.com/F0V/T2AI/GXDJ40NZ/F0VT2AIGXDJ40NZ.SMALL.jpg cool knex13 Hello cool knex13 here. Have you got a iPod touch or a iPhone. Don't just hate it when you run out of battery fast well I will show you 14 great battery tips. Down forget to rate. Leave a comment and tell me how I did. Soon I will ad more great battery tips! :) Closing down apps 1. What most...
By: cool knex13

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Fri, 13 Jan 2012 11:43:04 PST
DIY Portable Bluetooth Speaker 30W, BT4.0, Passive Radiators http://www.instructables.com/id/DIY-Bluetooth-Speaker-30W-BT40-Passive-Radiators/
DIY Portable Bluetooth Speaker 30W, BT4.0, Passive Radiators - More DIY How To Projects]]> http://cdn.instructables.com/FTP/6LZE/IDM03MJI/FTP6LZEIDM03MJI.SQUARE2.jpg http://cdn.instructables.com/FTP/6LZE/IDM03MJI/FTP6LZEIDM03MJI.SQUARE.jpg http://cdn.instructables.com/FTP/6LZE/IDM03MJI/FTP6LZEIDM03MJI.SMALL.jpg Barry_L Hey everybody! So in this tutorial I'm going to show you exactly how I built this (true) 30W RMS portable bluetooth speaker! Parts for this speaker can be optained pretty easily and cheaply, and there will be links provided to everything needed. First off, here are some specs and features: Bluetooth...
By: Barry_L

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Sat, 22 Aug 2015 10:42:27 PDT
Emergency Apocalypse cell phone BATTERY EXTENDED X4 http://www.instructables.com/id/Emergency-Apocalypse-cell-phone-BATTERY-EXTENDED-X/
Emergency Apocalypse cell phone BATTERY EXTENDED X4 - More DIY How To Projects]]> http://cdn.instructables.com/FZH/KE6O/IDK2MI6S/FZHKE6OIDK2MI6S.SQUARE2.jpg http://cdn.instructables.com/FZH/KE6O/IDK2MI6S/FZHKE6OIDK2MI6S.SQUARE.jpg http://cdn.instructables.com/FZH/KE6O/IDK2MI6S/FZHKE6OIDK2MI6S.SMALL.jpg kmaikaza We all know that the biggest problem after being affected by a natural disaster or a Zombie Apocalypse , is loss of the electric grid. And all phones specially new ones have short battery life of 8h if we are realistic. All cellphone towers have backup generators or battery banks enabling them to ...
By: kmaikaza

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Thu, 20 Aug 2015 15:21:47 PDT
Easily recharge alkaline batteries! http://www.instructables.com/id/Easily-recharge-alkaline-batteries/
Easily recharge alkaline batteries! - More DIY How To Projects]]> http://cdn.instructables.com/FOI/4SXP/FHTAIQX4/FOI4SXPFHTAIQX4.SQUARE2.jpg http://cdn.instructables.com/FOI/4SXP/FHTAIQX4/FOI4SXPFHTAIQX4.SQUARE.jpg http://cdn.instructables.com/FOI/4SXP/FHTAIQX4/FOI4SXPFHTAIQX4.SMALL.jpg CalcProgrammer1 Did you know that you can recharge alkaline batteries? Well, they're not perfect (don't have very good recharge capacity, few recharge cycles, etc) but you can recharge them to an extent. Many people have developed fancy charging circuits, but I was able to get charge into some Alkaline batteries ...
By: CalcProgrammer1

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Mon, 23 Jun 2008 22:51:37 PDT
Obstacle Avoiding Robot http://www.instructables.com/id/Arduino-Ultimate-Obstacle-Avoiding-Robot/
Obstacle Avoiding Robot - More DIY How To Projects]]> http://cdn.instructables.com/FOH/SENN/I5S2FEXR/FOHSENNI5S2FEXR.SQUARE2.jpg http://cdn.instructables.com/FOH/SENN/I5S2FEXR/FOHSENNI5S2FEXR.SQUARE.jpg http://cdn.instructables.com/FOH/SENN/I5S2FEXR/FOHSENNI5S2FEXR.SMALL.jpg RoyPeer This instructable is the written version of my "Arduino: How To Build An Obstacle Avoiding Robot" Youtube video that I've uploaded recently. I strongly recommend you to check it out.So, without further ado, Let's get started ! A chassis ! the first step and the base of any robot is a chassis. ...
By: RoyPeer

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Thu, 5 Feb 2015 13:15:37 PST
Testing batteries with multimeter http://www.instructables.com/id/Testing-batteries-with-multimeter/
Testing batteries with multimeter - More DIY How To Projects]]> http://cdn.instructables.com/F0K/MMDS/HN825MBO/F0KMMDSHN825MBO.SQUARE2.jpg http://cdn.instructables.com/F0K/MMDS/HN825MBO/F0KMMDSHN825MBO.SQUARE.jpg http://cdn.instructables.com/F0K/MMDS/HN825MBO/F0KMMDSHN825MBO.SMALL.jpg mmmmqc Find out how much power is left in your batteries using a multimeter. Here I test AA batteries but you can test AAA and other size batteries. This was done using the multimeter device at TechShop San Jose. They have an electronics workstation with multimeters, soldering iron and other tools for wor...
By: mmmmqc

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Sun, 27 Oct 2013 01:42:17 PDT
DIY SOLAR LI ION/ LIPO BATTERY CHARGER http://www.instructables.com/id/DIY-SOLAR-LI-ION-LIPO-BATTERY-CHARGER/
DIY SOLAR LI ION/ LIPO BATTERY CHARGER - More DIY How To Projects]]> http://cdn.instructables.com/FP4/60MK/ICYN1ZRN/FP460MKICYN1ZRN.SQUARE2.jpg http://cdn.instructables.com/FP4/60MK/ICYN1ZRN/FP460MKICYN1ZRN.SQUARE.jpg http://cdn.instructables.com/FP4/60MK/ICYN1ZRN/FP460MKICYN1ZRN.SMALL.jpg deba168 Imagine you are a gadget lover or hobbyist /tinkerer or RC enthusiast and you are going for a camping or outing .Your smart phone/MP3 player battery run out,you have taken a RC Quad Copter,but not able to fly for a long time. So you definitely need a good charger to charge the battery. Am I right ?...
By: deba168

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Mon, 3 Aug 2015 08:11:37 PDT
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