Instructables: exploring - technology - battery - popular http://www.instructables.com Thu, 30 Mar 2017 18:39:00 PDT BLOX v1.01 Homemade Emergency Power Bank for Smatphone with TP4056 Li-Ion Charging Module http://www.instructables.com/id/Homemade-Emergency-Power-Bank-for-Smatphone-with-T/
Homemade Emergency Power Bank for Smatphone with TP4056 Li-Ion Charging Module - More DIY How To Projects]]> https://cdn.instructables.com/F2H/9ONA/I8G5VYN8/F2H9ONAI8G5VYN8.SQUARE2.jpg https://cdn.instructables.com/F2H/9ONA/I8G5VYN8/F2H9ONAI8G5VYN8.SQUARE.jpg https://cdn.instructables.com/F2H/9ONA/I8G5VYN8/F2H9ONAI8G5VYN8.SMALL.jpg joulethief669 Homemade Emergency Power Bank for Smatphone with DC Voltage Step-up Boost Module and TP4056 1A Li-Ion battery Charging Module, 2 cells laptop batteries, mini box toy, and few timesModel: TP4056- Material: PCB + plastic + iron - Board TP4056 lithium charge management chip - Mini USB head can link di...
By: joulethief669

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Mon, 13 Apr 2015 01:44:35 PDT
Portable Laptop Charger (Cheap and Easy) http://www.instructables.com/id/Portable-Laptop-Charger-Cheap-and-Easy/
Portable Laptop Charger (Cheap and Easy) - More DIY How To Projects]]> https://cdn.instructables.com/FIH/MDVT/ILWJ5F1O/FIHMDVTILWJ5F1O.SQUARE2.jpg https://cdn.instructables.com/FIH/MDVT/ILWJ5F1O/FIHMDVTILWJ5F1O.SQUARE.jpg https://cdn.instructables.com/FIH/MDVT/ILWJ5F1O/FIHMDVTILWJ5F1O.SMALL.jpg blorgggg Charge your LAPTOP with inexpensive 5-volt cellphone battery packs! Get crazy long lasting power anywhere, planes, trains, jungles! It's also only about $5 more than a regular cellphone charger. The total cost is only about $10-$30! You don't even need to solder, you just need to screw some wires t...
By: blorgggg

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Thu, 17 Mar 2016 22:16:35 PDT
DIY Solar Power Pack http://www.instructables.com/id/DIY-Solar-Power-Pack/
DIY Solar Power Pack - More DIY How To Projects]]> https://cdn.instructables.com/F7K/WQDB/ISCBSTE0/F7KWQDBISCBSTE0.SQUARE2.jpg https://cdn.instructables.com/F7K/WQDB/ISCBSTE0/F7KWQDBISCBSTE0.SQUARE.jpg https://cdn.instructables.com/F7K/WQDB/ISCBSTE0/F7KWQDBISCBSTE0.SMALL.jpg led_freak What do an off-grid camping trip and a power outage have in common?Well, in both cases it is good to have a battery backup at hand.Fortunately for you, I am going to show you how to build one yourself. I know that there is already a wide variety of these kind of projects out there which is a good in...
By: led_freak

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Sun, 4 Sep 2016 09:51:32 PDT
Replacing the battery of a Logitech Boombox http://www.instructables.com/id/Replacing-the-battery-of-a-Logitech-Boombox/
Replacing the battery of a Logitech Boombox - More DIY How To Projects]]> https://cdn.instructables.com/FVD/E8YD/HWJJVRVJ/FVDE8YDHWJJVRVJ.SQUARE2.jpg https://cdn.instructables.com/FVD/E8YD/HWJJVRVJ/FVDE8YDHWJJVRVJ.SQUARE.jpg https://cdn.instructables.com/FVD/E8YD/HWJJVRVJ/FVDE8YDHWJJVRVJ.SMALL.jpg scavix Logitech UE 984-000304 Boombox Wireless Bluetooth Speaker aka known as "Boombox" is a very popular Bluetooth wireless speaker with great design, easy operability and great sound. You can pair it with up to 4 mobile phones or tablets and play your favorite music wireless while you're outdoor.Currentl...
By: scavix

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Tue, 17 Jun 2014 16:02:22 PDT
DIY Portable LED Panel http://www.instructables.com/id/DIY-Portable-LED-Panel/
DIY Portable LED Panel - More DIY How To Projects]]> https://cdn.instructables.com/FEB/HT7L/IZT6PTP4/FEBHT7LIZT6PTP4.SQUARE2.jpg https://cdn.instructables.com/FEB/HT7L/IZT6PTP4/FEBHT7LIZT6PTP4.SQUARE.jpg https://cdn.instructables.com/FEB/HT7L/IZT6PTP4/FEBHT7LIZT6PTP4.SMALL.jpg GreatScottLab In this project I will show you how to create a powerful and robust 70W LED panel that can be powered by a Li-Ion or Li-Po battery pack. The control circuit can dim the pure white and warm white 5630 LED strips individually and does not cause any flicker problems due to the fast pulse frequency. Let...
By: GreatScottLab

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Sun, 5 Mar 2017 07:43:52 PST
Replace Ni-Cd Batteries With Li-Ion Batteries http://www.instructables.com/id/Replace-Ni-Cd-Batteries-With-Li-Ion-Batteries/
Replace Ni-Cd Batteries With Li-Ion Batteries - More DIY How To Projects]]> https://cdn.instructables.com/F3Y/J2FM/HHS9SOUA/F3YJ2FMHHS9SOUA.SQUARE2.jpg https://cdn.instructables.com/F3Y/J2FM/HHS9SOUA/F3YJ2FMHHS9SOUA.SQUARE.jpg https://cdn.instructables.com/F3Y/J2FM/HHS9SOUA/F3YJ2FMHHS9SOUA.SMALL.jpg DIYPerks In this video, I'll show you how to replace Ni-Cd batteries with Li-Ion batteries, which need protecting. Specifically, I'm giving my old drill new life.
By: DIYPerks

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Sun, 16 Jun 2013 01:19:40 PDT
Microcontroller based smart battery charger http://www.instructables.com/id/Microcontroller-Based-Smart-Battery-Charger/
Microcontroller based smart battery charger - More DIY How To Projects]]> https://cdn.instructables.com/FPO/H87K/IL2C9IG7/FPOH87KIL2C9IG7.SQUARE2.jpg https://cdn.instructables.com/FPO/H87K/IL2C9IG7/FPOH87KIL2C9IG7.SQUARE.jpg https://cdn.instructables.com/FPO/H87K/IL2C9IG7/FPOH87KIL2C9IG7.SMALL.jpg SHARANYADAS The circuit what you are about to see is a smart battery charger based on ATMEGA8A with auto cut off.Different parameters are shown via a LCD during different charge states.Also the circuit will make sound via a buzzer upon charge completion.I built the charger basically to charge my 11.1v/4400maH L...
By: SHARANYADAS

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Fri, 26 Feb 2016 19:55:07 PST
Business Card/Game Console: ATtiny85 and OLED Screen http://www.instructables.com/id/Business-CardGame-Console-ATtiny85-and-OLED-Screen/
Business Card/Game Console: ATtiny85 and OLED Screen - More DIY How To Projects]]> https://cdn.instructables.com/FXZ/5ASW/IU9US39C/FXZ5ASWIU9US39C.SQUARE2.jpg https://cdn.instructables.com/FXZ/5ASW/IU9US39C/FXZ5ASWIU9US39C.SQUARE.jpg https://cdn.instructables.com/FXZ/5ASW/IU9US39C/FXZ5ASWIU9US39C.SMALL.jpg AlexFW Hi everyone!Today I'm going to show you how you can build your own business card/game console/whatever you can imagine that features a backlit I2C OLED display and an ATtiny85 Microprocessor. In this Instructable I'll tell you how a PCB that I designed actually functions, how you can build it, and w...
By: AlexFW

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Sun, 16 Oct 2016 11:16:24 PDT
DIY Cordless Cold Heat Soldering Iron http://www.instructables.com/id/DIY-Cordless-Cold-Heat-Soldering-Iron/
DIY Cordless Cold Heat Soldering Iron - More DIY How To Projects]]> https://cdn.instructables.com/FJH/CP16/IZ6CDGJU/FJHCP16IZ6CDGJU.SQUARE2.jpg https://cdn.instructables.com/FJH/CP16/IZ6CDGJU/FJHCP16IZ6CDGJU.SQUARE.jpg https://cdn.instructables.com/FJH/CP16/IZ6CDGJU/FJHCP16IZ6CDGJU.SMALL.jpg thediylife Traditional soldering irons use a heated tip to melt solder in order to make electrical joints, while this works well when you have a mains outlet around, its not that practical when you're out in the field. Anyone who's done anything RC will know the frustration involved in a joint coming loose or ...
By: thediylife

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Mon, 20 Feb 2017 05:51:08 PST
The Easiest Arduino High Altitude Balloon Data Logger http://www.instructables.com/id/The-Easiest-Arduino-High-Altitude-Balloon-Data-Log/
The Easiest Arduino High Altitude Balloon Data Logger - More DIY How To Projects]]> https://cdn.instructables.com/F1X/703Q/IZ6C2AXY/F1X703QIZ6C2AXY.SQUARE2.jpg https://cdn.instructables.com/F1X/703Q/IZ6C2AXY/F1X703QIZ6C2AXY.SQUARE.jpg https://cdn.instructables.com/F1X/703Q/IZ6C2AXY/F1X703QIZ6C2AXY.SMALL.jpg Spaceshark Check out our 360 video from space here: High Altitude balloons are effective tools in conducting experiments and measuring data in the stratosphere. A successful launch can cost less than $200 and give insight and video of how our planet functions.For hundreds of years, humans believed the Earth to...
By: Spaceshark

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Fri, 17 Feb 2017 12:21:47 PST
Make Your Own Li-Ion Battery Pack http://www.instructables.com/id/Make-Your-Own-Li-Ion-Battery-Pack/
Make Your Own Li-Ion Battery Pack - More DIY How To Projects]]> https://cdn.instructables.com/FT9/KWIQ/IYOQNNY8/FT9KWIQIYOQNNY8.SQUARE2.jpg https://cdn.instructables.com/FT9/KWIQ/IYOQNNY8/FT9KWIQIYOQNNY8.SQUARE.jpg https://cdn.instructables.com/FT9/KWIQ/IYOQNNY8/FT9KWIQIYOQNNY8.SMALL.jpg GreatScottLab In this project I will show you how to combine common 18650 Li-Ion batteries in order to create a battery pack that features a higher voltage, a bigger capacity and most importantly useful safety measures. These can prevent an overcharge, overdischarge and even a short circuit of the batteries. Let'...
By: GreatScottLab

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Sun, 5 Feb 2017 20:17:08 PST
DIY Protected Lithium battery holder http://www.instructables.com/id/Build-protected-Lithium-battery-holder/
DIY Protected Lithium battery holder - More DIY How To Projects]]> https://cdn.instructables.com/FSO/OL28/IEGXTSO6/FSOOL28IEGXTSO6.SQUARE2.jpg https://cdn.instructables.com/FSO/OL28/IEGXTSO6/FSOOL28IEGXTSO6.SQUARE.jpg https://cdn.instructables.com/FSO/OL28/IEGXTSO6/FSOOL28IEGXTSO6.SMALL.jpg Carl Hauschke In this instructable I'll show you how to make a battery holder for Lithium 18650 batteries so you can use unprotected cells in your DIY projects without worrying about over discharge, overcharge, or short circuit.What we need:- 18650 Holder (http://ebay.to/1K3CY55) Edit: http://ebay.to/1K9HbyP The...
By: Carl Hauschke

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Sun, 13 Sep 2015 19:16:24 PDT
Using an DC Adapter for Battery Powered Device http://www.instructables.com/id/Using-a-DC-Adapter-as-a-Battery/
Using an DC Adapter for Battery Powered Device - More DIY How To Projects]]> http://www.instructables.com/files/deriv/F7M/TSQK/GXUZMSZ2/F7MTSQKGXUZMSZ2.SQUARE2.jpg http://www.instructables.com/files/deriv/F7M/TSQK/GXUZMSZ2/F7MTSQKGXUZMSZ2.SQUARE.jpg http://www.instructables.com/files/deriv/F7M/TSQK/GXUZMSZ2/F7MTSQKGXUZMSZ2.SMALL.jpg hanlin_y This Instructable will show you how to use a DC adapter instead of batteries. This will not only reduce battery expense and e-waste  but also provide consistent performance. Most battery device are used momentarily and draw up to a few watts so it will have little, if any effect on your electrical b...
By: hanlin_y

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Fri, 27 Jan 2012 11:26:17 PST
Arduino GPS Reciever In a Tin http://www.instructables.com/id/Arduino-GPS-Reciever-in-a-Tin/
Arduino GPS Reciever In a Tin - More DIY How To Projects]]> https://cdn.instructables.com/FHF/ER5C/IY3D21HM/FHFER5CIY3D21HM.SQUARE2.jpg https://cdn.instructables.com/FHF/ER5C/IY3D21HM/FHFER5CIY3D21HM.SQUARE.jpg https://cdn.instructables.com/FHF/ER5C/IY3D21HM/FHFER5CIY3D21HM.SMALL.jpg diytronics Welcome to my tutorial on how to build a GPS Receiver! I have entered this Instructable into a few competitions that I think it is applicable to. If you feel it is worth a vote into the above contests, please do click the vote button. Thank you!Ever wanted to know your exact location? Perhaps the ex...
By: diytronics

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Wed, 18 Jan 2017 12:34:34 PST
3 Useful Things From an Old Laptop http://www.instructables.com/id/3-Useful-Things-From-an-Old-Laptop/
3 Useful Things From an Old Laptop - More DIY How To Projects]]> https://cdn.instructables.com/F2X/0OE9/IZ6CQW7X/F2X0OE9IZ6CQW7X.SQUARE2.jpg https://cdn.instructables.com/F2X/0OE9/IZ6CQW7X/F2X0OE9IZ6CQW7X.SQUARE.jpg https://cdn.instructables.com/F2X/0OE9/IZ6CQW7X/F2X0OE9IZ6CQW7X.SMALL.jpg deba168 When people get a new gadget,they will spend most of the time and money just to get their hands on the new item. If you have a brand new smartphone or a laptop, you are probably trying to figure out what to do with your old gadget.But you should aware about the E-Waste from your old gadgets.E-Waste...
By: deba168

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Sun, 29 Jan 2017 01:12:53 PST
Power your Arduino Uno with four rechargeable AA batteries http://www.instructables.com/id/Power-your-Arduino-Uno-with-four-rechargeable-AA-b/
Power your Arduino Uno with four rechargeable AA batteries - More DIY How To Projects]]> https://cdn.instructables.com/FUD/THZP/HI3TRGPO/FUDTHZPHI3TRGPO.SQUARE2.jpg https://cdn.instructables.com/FUD/THZP/HI3TRGPO/FUDTHZPHI3TRGPO.SQUARE.jpg https://cdn.instructables.com/FUD/THZP/HI3TRGPO/FUDTHZPHI3TRGPO.SMALL.jpg aj_j This Instructable will show how to power your Arduino Uno with four rechargeable AA batteries. You will need: An Arduino Uno 4 AA battery holder (I HIGHLY recommend this one from RadioShack, as it not only has an internal switch for turning on the Arduino, it also has the necessary wires needed to...
By: aj_j

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Wed, 19 Jun 2013 11:22:46 PDT
Shake Activated Water Bottle Night Light http://www.instructables.com/id/Shake-Activated-Water-Bottle-Night-Light/
Shake Activated Water Bottle Night Light - More DIY How To Projects]]> https://cdn.instructables.com/FCK/QQV8/ISCBUZJY/FCKQQV8ISCBUZJY.SQUARE2.jpg https://cdn.instructables.com/FCK/QQV8/ISCBUZJY/FCKQQV8ISCBUZJY.SQUARE.jpg https://cdn.instructables.com/FCK/QQV8/ISCBUZJY/FCKQQV8ISCBUZJY.SMALL.jpg Troublemakers This project turns your bedside bottle of water into a lantern with just a shake. That's right, we added a light...to the bottle. This project isn't just cool because it makes your water bottle look like a video game power-up, it is also super practical. No more ping-ponging down a dark hallway to t...
By: Troublemakers

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Mon, 5 Sep 2016 19:20:24 PDT
Portable battery pack for light Electric Vehicle http://www.instructables.com/id/Portable-Battery-Pack-for-Light-Electric-Vehicle/
Portable battery pack for light Electric Vehicle - More DIY How To Projects]]> https://cdn.instructables.com/FQV/6LYF/IWH3HYA2/FQV6LYFIWH3HYA2.SQUARE2.jpg https://cdn.instructables.com/FQV/6LYF/IWH3HYA2/FQV6LYFIWH3HYA2.SQUARE.jpg https://cdn.instructables.com/FQV/6LYF/IWH3HYA2/FQV6LYFIWH3HYA2.SMALL.jpg samircury This is not only my process, motivations and design goals but a living document for the length of the project.I'll keep publishing more steps as I move towards the end design goals. Feel free to comment and send suggestions for the steps that are yet to be done.In a nutshell, all I wanted was to sta...
By: samircury

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Mon, 12 Dec 2016 00:50:32 PST
Reusable Vinegar Battery http://www.instructables.com/id/Reusable-Vinegar-Battery/
Reusable Vinegar Battery - More DIY How To Projects]]> https://cdn.instructables.com/F01/V9MQ/IDON85CE/F01V9MQIDON85CE.SQUARE2.jpg https://cdn.instructables.com/F01/V9MQ/IDON85CE/F01V9MQIDON85CE.SQUARE.jpg https://cdn.instructables.com/F01/V9MQ/IDON85CE/F01V9MQIDON85CE.SMALL.jpg Gursimran Singh 425 Hi,in this tutorial I am going to show you how to make a reusable battery from vinegar that's easy and interesting.This even reduces waste by using up some of the electronic waste.Making electricity from things you find around the house is a fun project.There are lots of easy ways to make homemade b...
By: Gursimran Singh 425

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Sun, 23 Aug 2015 17:53:02 PDT
PC Controlled Bluetooth Robot (With a GUI !) http://www.instructables.com/id/PC-Controlled-Wireless-Bluetooth-Robot-With-a-GUI/
PC Controlled Bluetooth Robot (With a GUI !) - More DIY How To Projects]]> https://cdn.instructables.com/FMI/JQR3/I8UO5SB6/FMIJQR3I8UO5SB6.SQUARE2.jpg https://cdn.instructables.com/FMI/JQR3/I8UO5SB6/FMIJQR3I8UO5SB6.SQUARE.jpg https://cdn.instructables.com/FMI/JQR3/I8UO5SB6/FMIJQR3I8UO5SB6.SMALL.jpg RoyPeer In this Instructable I will show you how to build a robot that is controlled via Bluetooth using a keyboard, has a graphical user interface built with processing that displays the input from the keyboard and actually turns the whole bushiness into a great fun, and It's also economical to build. I've...
By: RoyPeer

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Thu, 23 Apr 2015 10:16:20 PDT
Acer Extensa Laptop (5620 / T5250) Upgrade & Tweak Guide http://www.instructables.com/id/Acer-Extensa-Laptop-5620-T5250-Upgrade-Tweak/
Acer Extensa Laptop (5620 / T5250) Upgrade & Tweak Guide - More DIY How To Projects]]> https://cdn.instructables.com/FFK/9ZJM/FJ8YVDWO/FFK9ZJMFJ8YVDWO.SQUARE2.jpg https://cdn.instructables.com/FFK/9ZJM/FJ8YVDWO/FFK9ZJMFJ8YVDWO.SQUARE.jpg https://cdn.instructables.com/FFK/9ZJM/FJ8YVDWO/FFK9ZJMFJ8YVDWO.SMALL.jpg CharredPC Some time ago I posted about installing Windows XP onto my new Acer Extensa 5620-6830 laptop. It's a nice little machine- the price was right, and standard specs aren't bad. But here's some information that could be helpful to anyone with this budget best Buy laptop and wants to get the most bang fo...
By: CharredPC

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Tue, 29 Jul 2008 20:54:14 PDT
How to build you own LiPo pack out of single cells http://www.instructables.com/id/How-to-build-you-own-LiPo-pack-out-of-single-cells/
How to build you own LiPo pack out of single cells - More DIY How To Projects]]> https://cdn.instructables.com/F9P/W35X/IDUQP45G/F9PW35XIDUQP45G.SQUARE2.jpg https://cdn.instructables.com/F9P/W35X/IDUQP45G/F9PW35XIDUQP45G.SQUARE.jpg https://cdn.instructables.com/F9P/W35X/IDUQP45G/F9PW35XIDUQP45G.SMALL.jpg Tarwin There are lots of reasons for building your own LiPo pack: special form factor neededcheap single cellsrecycling old cellsIts quite easy, if you know what you are doing and work carefully. Basically its just connecting all the cells in serial, with a separate balancer port on every bridge. Neverthel...
By: Tarwin

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Sat, 29 Aug 2015 03:06:31 PDT
Simple RC Stick Plane Build(CAD Model Included) http://www.instructables.com/id/Simple-RC-Stick-Plane-BuildCAD-Model-Included/
Simple RC Stick Plane Build(CAD Model Included) - More DIY How To Projects]]> https://cdn.instructables.com/FFV/DAOQ/IJEMO2JJ/FFVDAOQIJEMO2JJ.SQUARE2.jpg https://cdn.instructables.com/FFV/DAOQ/IJEMO2JJ/FFVDAOQIJEMO2JJ.SQUARE.jpg https://cdn.instructables.com/FFV/DAOQ/IJEMO2JJ/FFVDAOQIJEMO2JJ.SMALL.jpg Dhipak Bala This is a simple RC plane designed around a 1/2''x1/2'' dowel for the fuselage. The advantage to such a design is the ease of modification -the electronics and any desired sensors can be placed almost anywhere along the fuselage. The plane is propelled via a brushless motor spinning a 10'' propeller...
By: Dhipak Bala

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Thu, 14 Jan 2016 14:16:53 PST
How to make a 12v battery for free http://www.instructables.com/id/How-to-make-a-12v-battery-for-free/
How to make a 12v battery for free - More DIY How To Projects]]> https://cdn.instructables.com/FXU/F1K6/IEWNKQYW/FXUF1K6IEWNKQYW.SQUARE2.jpg https://cdn.instructables.com/FXU/F1K6/IEWNKQYW/FXUF1K6IEWNKQYW.SQUARE.jpg https://cdn.instructables.com/FXU/F1K6/IEWNKQYW/FXUF1K6IEWNKQYW.SMALL.jpg william444555 This is how i made a 12v li-ion battery for free without having to buy any cells or batteries from the internet what so ever. i use these in all of my projects on instructabals that need a battery of some sort, it is cheaper and can usually store more. Source Your Batteries One of the best places...
By: william444555

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Wed, 23 Sep 2015 12:33:27 PDT
9v LED flashlight - teh best evarrr! http://www.instructables.com/id/9v-LED-flashlight---teh-best-evarrr!/
9v LED flashlight - teh best evarrr! - More DIY How To Projects]]> https://cdn.instructables.com/FJ5/W538/K29ERIE2N7C/FJ5W538K29ERIE2N7C.SQUARE2.jpg https://cdn.instructables.com/FJ5/W538/K29ERIE2N7C/FJ5W538K29ERIE2N7C.SQUARE.jpg https://cdn.instructables.com/FJ5/W538/K29ERIE2N7C/FJ5W538K29ERIE2N7C.SMALL.jpg Brian Henderson I know this project's been done a few times here on instructables, but as with many projects there are several ways one can get the same result. I personally think that this setup is the best and easiest for beginnners. Also, it's reusable! I whipped up this little project from scratch as a means...
By: Brian Henderson

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Tue, 5 Sep 2006 10:28:28 PDT
Wifi + Bluetooth portable speaker http://www.instructables.com/id/Multi-Room-Wifi-Speakers-Kandi-Skull-inspired-Port/
Wifi + Bluetooth portable speaker - More DIY How To Projects]]> https://cdn.instructables.com/FA8/MRZP/I6DYXE2G/FA8MRZPI6DYXE2G.SQUARE2.jpg https://cdn.instructables.com/FA8/MRZP/I6DYXE2G/FA8MRZPI6DYXE2G.SQUARE.jpg https://cdn.instructables.com/FA8/MRZP/I6DYXE2G/FA8MRZPI6DYXE2G.SMALL.jpg DIY_DAVE Thanks for checking out my instuctable on how I built my own portable Wifi + Bluetooth speaker.This is my fifth wifi speaker build. It integrates with my other 4 diy built wifi speakers to make a full multi-room audio system that is controlled centrally on my tablet. I have them in different rooms o...
By: DIY_DAVE

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Thu, 19 Feb 2015 05:06:23 PST
Making a Saline or Hydroxide Solution http://www.instructables.com/id/Making-a-Saline-or-Hydroxide-Solution/
Making a Saline or Hydroxide Solution - More DIY How To Projects]]> https://cdn.instructables.com/FA0/4ADL/G4JNYTQ1/FA04ADLG4JNYTQ1.SQUARE2.jpg https://cdn.instructables.com/FA0/4ADL/G4JNYTQ1/FA04ADLG4JNYTQ1.SQUARE.jpg https://cdn.instructables.com/FA0/4ADL/G4JNYTQ1/FA04ADLG4JNYTQ1.SMALL.jpg egbertfitzwilly A classroom suitable method to make electrolyte solutions of any strength for al-air or microbial fuel cells if a heat source is available. Along the way we will learn about calculating ratios, percentages and solubility of inorganic chemicals in water. Plus these solutions can be used with other pr...
By: egbertfitzwilly

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Wed, 20 Jan 2010 22:46:49 PST
Remote controlled relay http://www.instructables.com/id/Remote-controlled-relay/
Remote controlled relay - More DIY How To Projects]]> https://cdn.instructables.com/F27/CZ3H/I5S2E8SH/F27CZ3HI5S2E8SH.SQUARE2.jpg https://cdn.instructables.com/F27/CZ3H/I5S2E8SH/F27CZ3HI5S2E8SH.SQUARE.jpg https://cdn.instructables.com/F27/CZ3H/I5S2E8SH/F27CZ3HI5S2E8SH.SMALL.jpg ibenkos In this project I am going to show you how to make an cheap remote controlled relay with an transmitter and receiver. This wireless relay can be used on anything and you can prank your friends by connecting it to an lamp and scare them ;) Parts and tools Here are the parts I used for this projec...
By: ibenkos

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Thu, 5 Feb 2015 11:10:12 PST
9v battery status indicator circuit http://www.instructables.com/id/9v-battery-status-indicator-circuit/
9v battery status indicator circuit - More DIY How To Projects]]> https://cdn.instructables.com/FPP/C4LF/H8TTNZXH/FPPC4LFH8TTNZXH.SQUARE2.jpg https://cdn.instructables.com/FPP/C4LF/H8TTNZXH/FPPC4LFH8TTNZXH.SQUARE.jpg https://cdn.instructables.com/FPP/C4LF/H8TTNZXH/FPPC4LFH8TTNZXH.SMALL.jpg victordas This is a 9v battery status indicator circuit.One of my friend asked me to build this as he wants a 9v transistor radio battery status indicator. Thats why i build this circuit it works great and another thing about this circuit by changing the 'ZENER diode" you can rebuild this circuit for other lo...
By: victordas

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Mon, 29 Oct 2012 08:26:37 PDT
Dewalt Power Bank http://www.instructables.com/id/Dewalt-Power-Bank/
Dewalt Power Bank - More DIY How To Projects]]> https://cdn.instructables.com/F40/PU34/IW6PFG9K/F40PU34IW6PFG9K.SQUARE2.jpg https://cdn.instructables.com/F40/PU34/IW6PFG9K/F40PU34IW6PFG9K.SQUARE.jpg https://cdn.instructables.com/F40/PU34/IW6PFG9K/F40PU34IW6PFG9K.SMALL.jpg MakrToolbox This is nothing new. There are a lot of instructibles regarding making a power bank. The difference in this power bank is that I am using battery cells from a recycled laptop. I think that this makes it interesting and I hope that you do as well. I wanted to make a nice power bank and of course I wa...
By: MakrToolbox

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Thu, 1 Dec 2016 22:02:40 PST
Transformerless Adjustable Joule Thief http://www.instructables.com/id/Transformerless-Adjustable-Joule-Thief/
Transformerless Adjustable Joule Thief - More DIY How To Projects]]> https://cdn.instructables.com/FBN/ZOOF/IVO45E22/FBNZOOFIVO45E22.SQUARE2.jpg https://cdn.instructables.com/FBN/ZOOF/IVO45E22/FBNZOOFIVO45E22.SQUARE.jpg https://cdn.instructables.com/FBN/ZOOF/IVO45E22/FBNZOOFIVO45E22.SMALL.jpg DIY Circuits Did you have problems winding the toroidal transformer of a regular joule thief? If so then this instructable is for you! And if not it is also an interesting circuit to see.In this instructable I will show you how I made the simplest joule thief I know of with only an inductor! Demonstration A j...
By: DIY Circuits

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Sat, 26 Nov 2016 02:37:24 PST
Heavy duty portable charger for usb devices (phones, iPad, etc.) http://www.instructables.com/id/Heavy-duty-portable-charger-for-usb-devices-phone/
Heavy duty portable charger for usb devices (phones, iPad, etc.) - More DIY How To Projects]]> https://cdn.instructables.com/FDI/NVQR/G8LWTBT0/FDINVQRG8LWTBT0.SQUARE2.jpg https://cdn.instructables.com/FDI/NVQR/G8LWTBT0/FDINVQRG8LWTBT0.SQUARE.jpg https://cdn.instructables.com/FDI/NVQR/G8LWTBT0/FDINVQRG8LWTBT0.SMALL.jpg meseta Ever needed to charge your phone on the go? Can't find a wall socket to charge your iPod? Whenever I'm away from home for an extended period of time, I would charge my phone and mp3 player from my laptop.  This way, I get about 3 or 4 full charges out of the laptop battery and I could leave the pho...
By: meseta

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Sat, 1 May 2010 13:39:49 PDT
Dual USB Charger With Switching Regulator http://www.instructables.com/id/Portable-USB-Charger-1/
Dual USB Charger With Switching Regulator - More DIY How To Projects]]> https://cdn.instructables.com/F4N/NFE4/GB5HDVV6/F4NNFE4GB5HDVV6.SQUARE2.jpg https://cdn.instructables.com/F4N/NFE4/GB5HDVV6/F4NNFE4GB5HDVV6.SQUARE.jpg https://cdn.instructables.com/F4N/NFE4/GB5HDVV6/F4NNFE4GB5HDVV6.SMALL.jpg rocketman221 This is a portable USB Charger. It uses a high efficiency switching regulator that runs at 85 - 94% efficiency depending on input voltage and load. It takes an input voltage from 8 to 16 volts and can run from anything from a 9 volt battery to a car battery. It has 2 USB ports and easily charges 2 p...
By: rocketman221

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Sun, 11 Jul 2010 23:21:23 PDT
Make a Basic Electromagnet http://www.instructables.com/id/Make-a-basic-electromagnet./
Make a Basic Electromagnet - More DIY How To Projects]]> https://cdn.instructables.com/F0F/5VOC/FBVHE7NH/F0F5VOCFBVHE7NH.SQUARE2.jpg https://cdn.instructables.com/F0F/5VOC/FBVHE7NH/F0F5VOCFBVHE7NH.SQUARE.jpg https://cdn.instructables.com/F0F/5VOC/FBVHE7NH/F0F5VOCFBVHE7NH.SMALL.jpg sacred Electromagnets are very useful tools. They have the ability to gain a magnetic field with the introduction of current and to lose it once the current ceases. We will be building a very simple one that works with these principles. It is also a very cheap project, I had everything needed to make it l...
By: sacred

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Sat, 26 Jan 2008 11:06:50 PST
DP2 - Da Pimp 2 Assembly Instructions http://www.instructables.com/id/DP2-Da-Pimp-2-Assembly-Instructions/
DP2 - Da Pimp 2 Assembly Instructions - More DIY How To Projects]]> https://cdn.instructables.com/F5R/OW13/IE42ZP6K/F5ROW13IE42ZP6K.SQUARE2.jpg https://cdn.instructables.com/F5R/OW13/IE42ZP6K/F5ROW13IE42ZP6K.SQUARE.jpg https://cdn.instructables.com/F5R/OW13/IE42ZP6K/F5ROW13IE42ZP6K.SMALL.jpg sklarm DP2 is a extremely portable battery tester / desulfator / charger. These are the instructions for assembling a DP2 kit. Kits or fully assembled units are available for sale through the Holy Scrap Store. More up to date information is available on the DP2 Page. Open the Enclosure Cut open the ...
By: sklarm

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Thu, 3 Sep 2015 16:37:16 PDT
Timex Battery Replacement http://www.instructables.com/id/Timex-Battery-Replacement/
Timex Battery Replacement - More DIY How To Projects]]> https://cdn.instructables.com/FDU/64WQ/I155KBCD/FDU64WQI155KBCD.SQUARE2.jpg https://cdn.instructables.com/FDU/64WQ/I155KBCD/FDU64WQI155KBCD.SQUARE.jpg https://cdn.instructables.com/FDU/64WQ/I155KBCD/FDU64WQI155KBCD.SMALL.jpg RichsMethods Hello! This "Quick Tip" Tutorial shows how to replace a watch battery on a Timex Ironman Watch. This video should work for any Timex Ironman Digital watch (or other Timex watches).I suggest following along with the video as you replace the battery. Good luck and feel free to ask questions. I usually...
By: RichsMethods

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Thu, 9 Oct 2014 15:35:45 PDT
Programmable Battery Protection [Open Source] http://www.instructables.com/id/Programmable-Battery-Protection-Open-Source/
Programmable Battery Protection [Open Source] - More DIY How To Projects]]> https://cdn.instructables.com/FP8/TZ4Q/IVA4Q19M/FP8TZ4QIVA4Q19M.SQUARE2.jpg https://cdn.instructables.com/FP8/TZ4Q/IVA4Q19M/FP8TZ4QIVA4Q19M.SQUARE.jpg https://cdn.instructables.com/FP8/TZ4Q/IVA4Q19M/FP8TZ4QIVA4Q19M.SMALL.jpg lutkeveld Every battery needs protection. When I couldn't find a board that suited my needs, I set out to create one myself.If you discharge a battery completely it can be permanently damaged. This PCB monitors the voltage (and thus the State Of Charge) and if it dips below the programmed voltage it will disc...
By: lutkeveld

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Thu, 10 Nov 2016 14:09:34 PST
How a PULL UP and PULL DOWN resistor works http://www.instructables.com/id/How-a-PULL-UP-and-PULL-DOWN-Resistor-Works/
How a PULL UP and PULL DOWN resistor works - More DIY How To Projects]]> https://cdn.instructables.com/F9X/9PQU/IV0ARSOC/F9X9PQUIV0ARSOC.SQUARE2.jpg https://cdn.instructables.com/F9X/9PQU/IV0ARSOC/F9X9PQUIV0ARSOC.SQUARE.jpg https://cdn.instructables.com/F9X/9PQU/IV0ARSOC/F9X9PQUIV0ARSOC.SMALL.jpg afzalrehmani IN THIS INSTRUCT ABLE I AM GOING TO SHOW YOU (1) HOW A PULL UP AND PULL DOWN RESISTOR WORKS (2) HOW YOU WILL CONNECT A SWITCH IN A SAFER MODE (3) AND THEIR APPLICATIONA COMPLETE DETAILS IS ALSO GIVEN IN THE VIDEO DESCRIPTION AS WELL... How a PULL UP an PULL DOWN resistor works... PULL UP AND PUL...
By: afzalrehmani

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Sat, 5 Nov 2016 06:58:08 PDT
Build/modify a wrist watch! A great gift or just for yourself! http://www.instructables.com/id/Buildmodify-a-wrist-watch-A-great-gift-or-just-f/
Build/modify a wrist watch! A great gift or just for yourself! - More DIY How To Projects]]> https://cdn.instructables.com/FQW/M2NG/GTSF17X0/FQWM2NGGTSF17X0.SQUARE2.jpg https://cdn.instructables.com/FQW/M2NG/GTSF17X0/FQWM2NGGTSF17X0.SQUARE.jpg https://cdn.instructables.com/FQW/M2NG/GTSF17X0/FQWM2NGGTSF17X0.SMALL.jpg z3ds Tired of boring run of the mill wrist watches? Make one yourself! Impress that special someone or make one for yourself. Cheap and easy. All you need is a broken or working wrist watch, a donor digital watch and some creativity! Materials and tools Materials: You'll need a wrist watch preferabl...
By: z3ds

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Wed, 12 Dec 2012 19:01:33 PST
Power Your Drill With A Computer Power Supply! http://www.instructables.com/id/What-To-Do-With-A-Drill-That-Has-A-Dead-Battery-Ad/
Power Your Drill With A Computer Power Supply! - More DIY How To Projects]]> https://cdn.instructables.com/F8E/1AD2/IFD6KA1M/F8E1AD2IFD6KA1M.SQUARE2.jpg https://cdn.instructables.com/F8E/1AD2/IFD6KA1M/F8E1AD2IFD6KA1M.SQUARE.jpg https://cdn.instructables.com/F8E/1AD2/IFD6KA1M/F8E1AD2IFD6KA1M.SMALL.jpg Yonatan24 Slowly and sadly my drill battery died.Drill batteries cost more than $2I thought of the fact that I never need It to be portable because my dad has a killer Dewalt drill that's almost too powerful and scary to use...This gave me a pretty obvious idea: Why not power it with power from a regular wall...
By: Yonatan24

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Fri, 7 Aug 2015 16:58:44 PDT
DIY Bluetooth Speaker Under 5$ http://www.instructables.com/id/DIY-Bluetooth-Speaker-Under-5/
DIY Bluetooth Speaker Under 5$ - More DIY How To Projects]]> https://cdn.instructables.com/FLL/GBMR/IUOI9BL2/FLLGBMRIUOI9BL2.SQUARE2.jpg https://cdn.instructables.com/FLL/GBMR/IUOI9BL2/FLLGBMRIUOI9BL2.SQUARE.jpg https://cdn.instructables.com/FLL/GBMR/IUOI9BL2/FLLGBMRIUOI9BL2.SMALL.jpg bobes360 Today I'll show you how I made this awesome bluetooth speaker for total cost under 5$. It is easy project that you can make with minimal knowledge of electronics and woodworking. Just for you to know : this is not very high quality speaker. It's mainly made from scrap and to be as cheap as possible....
By: bobes360

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Wed, 26 Oct 2016 17:36:57 PDT
Portable Boombox/Speaker With Bluetooth http://www.instructables.com/id/Portable-Boombox-With-Bluetooth/
Portable Boombox/Speaker With Bluetooth - More DIY How To Projects]]> https://cdn.instructables.com/FAR/7W84/IFVC928M/FAR7W84IFVC928M.SQUARE2.jpg https://cdn.instructables.com/FAR/7W84/IFVC928M/FAR7W84IFVC928M.SQUARE.jpg https://cdn.instructables.com/FAR/7W84/IFVC928M/FAR7W84IFVC928M.SMALL.jpg william444555 So, you have a Bluetooth speaker but its lacking in volume and bass, this project cost me under £40 ($60) and packs a VERY loud punch. the whole project took me a whole summer holiday so around 6 weeks. the battery life on this project has not been measured because i cannot have it playing constantl...
By: william444555

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Sun, 20 Sep 2015 12:48:41 PDT
How to Make a Mini Battery Powered Soldering Iron http://www.instructables.com/id/How-to-Make-a-Mini-Battery-Powered-Soldering-Iron/
How to Make a Mini Battery Powered Soldering Iron - More DIY How To Projects]]> https://cdn.instructables.com/F0L/OHXY/IJQONG1Y/F0LOHXYIJQONG1Y.SQUARE2.jpg https://cdn.instructables.com/F0L/OHXY/IJQONG1Y/F0LOHXYIJQONG1Y.SQUARE.jpg https://cdn.instructables.com/F0L/OHXY/IJQONG1Y/F0LOHXYIJQONG1Y.SMALL.jpg romanursuhack https://www.youtube.com/watch?v=EHrDLSy_ojk&feature=youtu.be To do a mini Battery Powered Soldering Iron you need!!! In today’s video I am going to show how to make a DIY mini soldering iron that runs on two AA batteries. It is very easy and cost friendly to make such an emergency DIY soldering...
By: romanursuhack

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Tue, 26 Jan 2016 07:54:55 PST
18650 Battery Charger http://www.instructables.com/id/18650-Battery-Charger-1/
18650 Battery Charger - More DIY How To Projects]]> https://cdn.instructables.com/FPE/BQNR/IU8WEIPQ/FPEBQNRIU8WEIPQ.SQUARE2.jpg https://cdn.instructables.com/FPE/BQNR/IU8WEIPQ/FPEBQNRIU8WEIPQ.SQUARE.jpg https://cdn.instructables.com/FPE/BQNR/IU8WEIPQ/FPEBQNRIU8WEIPQ.SMALL.jpg Kester1 Hey guys Kester here! Today I'll be showing you guys how to make a 18650 battery charger! Without further a do, let's get started! Patreon As you may or may not know, I am Kester. I have a YouTube channel that is based on making electronics videos and diy videos and tutorials. As me making lots o...
By: Kester1

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Thu, 13 Oct 2016 15:49:16 PDT
arduino bluetooth tank http://www.instructables.com/id/arduino-bluetooth-tank/
arduino bluetooth tank - More DIY How To Projects]]> https://cdn.instructables.com/FBE/BR1J/IHTH69ZE/FBEBR1JIHTH69ZE.SQUARE2.jpg https://cdn.instructables.com/FBE/BR1J/IHTH69ZE/FBEBR1JIHTH69ZE.SQUARE.jpg https://cdn.instructables.com/FBE/BR1J/IHTH69ZE/FBEBR1JIHTH69ZE.SMALL.jpg jordan the tamago i has build an arduino bluetooth tank to learn how to programming and how bluetooth communication works between android smart phone and HC-06 or HC-05. The robotic arm are attached for user to control and capture something that assisted by ping sensor. The coding has included 3 type of auto pilot mo...
By: jordan the tamago

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Sun, 6 Dec 2015 07:54:44 PST
Battery Level Indicator http://www.instructables.com/id/Battery-Level-Indicator/
Battery Level Indicator - More DIY How To Projects]]> https://cdn.instructables.com/FNG/LNFK/IU1EC4W9/FNGLNFKIU1EC4W9.SQUARE2.jpg https://cdn.instructables.com/FNG/LNFK/IU1EC4W9/FNGLNFKIU1EC4W9.SQUARE.jpg https://cdn.instructables.com/FNG/LNFK/IU1EC4W9/FNGLNFKIU1EC4W9.SMALL.jpg balsuryana Hi everyone, It's me Balsuryana!. I'am back with some electronics projects! In this projects, i will show you how to make a Battery Level Indicator. I got this idea because i need this tools for indicate my powerbank battery level, so i made this tools. No more talking, LET'S MAKE IT! What you wil...
By: balsuryana

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Sat, 8 Oct 2016 09:42:02 PDT
DIY AUTOMATIC SOLAR CHARGE CONTROLLER http://www.instructables.com/id/DIY-AUTOMATIC-SOLAR-CHARGE-CONTROLLER/
DIY AUTOMATIC SOLAR CHARGE CONTROLLER - More DIY How To Projects]]> https://cdn.instructables.com/FBE/OGS7/ITVV0UH9/FBEOGS7ITVV0UH9.SQUARE2.jpg https://cdn.instructables.com/FBE/OGS7/ITVV0UH9/FBEOGS7ITVV0UH9.SQUARE.jpg https://cdn.instructables.com/FBE/OGS7/ITVV0UH9/FBEOGS7ITVV0UH9.SMALL.jpg vina1991 Hello friends Today I am back with another project called DIY AUTOMATIC SOLAR CHARGE CONTROLLER. It’s an automatic switching circuit that used to control the charging of a battery from solar panels or any other source. It’s a 555 based simple circuits the charge the battery when the battery charge g...
By: vina1991

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Tue, 4 Oct 2016 13:07:29 PDT
Turn off headlights when ignition off http://www.instructables.com/id/Turn-Off-Headlights-When-Ignition-Off/
Turn off headlights when ignition off - More DIY How To Projects]]> https://cdn.instructables.com/F2O/BZMN/ITCHDKXT/F2OBZMNITCHDKXT.SQUARE2.jpg https://cdn.instructables.com/F2O/BZMN/ITCHDKXT/F2OBZMNITCHDKXT.SQUARE.jpg https://cdn.instructables.com/F2O/BZMN/ITCHDKXT/F2OBZMNITCHDKXT.SMALL.jpg replayreb I bought my oldest son a used 2007 Mazda 3 last week. It is in great condition and he loves it. The problem is that since it is an older base model it doesn't have any extra bells or whistles like automatic headlights. He was driving a Toyota Corolla that he passed down to his little brother but it ...
By: replayreb

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Thu, 22 Sep 2016 21:48:20 PDT
Automatic Lights for Tool Chest http://www.instructables.com/id/Automatic-Lights-for-Tool-Chest/
Automatic Lights for Tool Chest - More DIY How To Projects]]> https://cdn.instructables.com/FKM/AFIW/ITCH0BO9/FKMAFIWITCH0BO9.SQUARE2.jpg https://cdn.instructables.com/FKM/AFIW/ITCH0BO9/FKMAFIWITCH0BO9.SQUARE.jpg https://cdn.instructables.com/FKM/AFIW/ITCH0BO9/FKMAFIWITCH0BO9.SMALL.jpg The Sam D You know how you open the fridge and the lights are just on? That's cool and I want that in a lot of other useful places - Like my tool chest. So now I have it and I'm going to show you how to do it too!This project covers adding LED lights to each drawer of a tool chest—so that it will automaticall...
By: The Sam D

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Wed, 21 Sep 2016 09:30:10 PDT
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