Instructables: exploring - technology - square Mon, 30 Mar 2015 09:31:46 PDT BLOX v1.01 Op-amp Basics (part 2)
Op-amp Basics (part 2) - More DIY How To Projects]]> brmarcum Op-amps are everywhere, in everything, and can do almost anything. Ok, maybe not quite, but they are one of the most widely used ICs out there, with a huge selection of options to choose from. In Part 1, I gave a little bit of history and theory, and then explained several circuits, like amplifiers,...
By: brmarcum

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Fri, 18 Jul 2014 11:51:01 PDT
Rotomold your own Speakers
Rotomold your own Speakers - More DIY How To Projects]]> mach1monkey I recently built my own rotomolder, a device that lets you make hollow parts like the hollow chocolate bunnies that they make every easter. It rotates a mold with resin inside 360º in two directions until the resin cures. Once hard you pop the mold open and there you have your hollow part! I'm makin...
By: mach1monkey

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Sun, 11 May 2014 12:22:41 PDT
Arduino Mini-Shields
Arduino Mini-Shields - More DIY How To Projects]]> ProfMuggs This is a set of simple, small form-factor, mini-shields that I created almost by accident. As I made more and more of them, I realized that they could be really useful. What started out as a way to use some spare parts, turned into a standardized form factor for a versatile, miniaturized Arduino ...
By: ProfMuggs

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Wed, 2 Apr 2014 09:01:05 PDT
A Tale of 3 Oscillators – Fixing Old Electronics
A Tale of 3 Oscillators – Fixing Old Electronics - More DIY How To Projects]]> russ_hensel When I first did electronics I really wanted a good audio oscillator.  Since then I build a bunch that are quite nice, but I also started collecting old electronics including a bunch of audio oscillators.  Now I have these almost antiques ( actually more like vintage:  that is 50 to 100 years old ) ...
By: russ_hensel

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Mon, 6 Jan 2014 13:06:58 PST
Understanding AutoDesk Inventor 2012: Creating Objects and Extruding
Understanding AutoDesk Inventor 2012: Creating Objects and Extruding - More DIY How To Projects]]> OceanusEva I made this at TechShop San Jose. I created this using the software at Tech Shop San Jose! This is a place to go and build your dreams! Check out there website! Please comment if you have any questions or have any comments! This is a "photo guide" instructable so please look...
By: OceanusEva

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Mon, 25 Mar 2013 12:05:51 PDT
Cassette Tape Square Card Reader Case wwear Trim the foam that comes with your square card reader and insert it in an old cassette case. Make small relief cuts for the spindle holders so it will close completely.
By: wwear

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Sun, 27 Jan 2013 22:49:56 PST
Working Rubik's Cube on Google SketchUp
Working Rubik's Cube on Google SketchUp - More DIY How To Projects]]> pineappleattack98 This Instructable will show you an easy way to make working, solvable, Rubik's Cube on the free 3D Modelling program, Google SketchUp.  What you will need: - A computer capable of running Google SketchUp - The free program Google SketchUp, which can be downloaded right here:
By: pineappleattack98

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Mon, 26 Nov 2012 15:38:49 PST
Analog Function Generator
Analog Function Generator - More DIY How To Projects]]> laserjocky Are you sick of 555 timers? I sure am. That's why I decided to build a semi-decent function generator as my term project in my analog electronics course. This design is capable of producing a square, triangle, and approximate sine wave reliably up to a frequency of around 300kHz. Make It Real Chall...
By: laserjocky

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Sat, 10 Mar 2012 11:45:55 PST
Arduino-Square with Color LCD
Arduino-Square with Color LCD - More DIY How To Projects]]> bsquares B-Squares is a modular electronics platform that enables users to build, customize, and continuously update their own electronics applications. In this B-Squares App we will cover how to assemble a simple Color-LCD Application using the Arduino-Square. Hardware: 1. Arduino-Square. 2. Battery-Squar...
By: bsquares

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Thu, 9 Feb 2012 17:35:55 PST
science experiment cambob97 this is a simple science experiment to show hydroxycorbonate things needed: clear glass two, 9 inch copper wires baking soda spoon 9 volt battery electrical tape. fill the glass with 3/4 of tap water. add a tsp of baking soda in the water and stir until it dissolves, strip both ends of both wire...
By: cambob97

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Tue, 9 Aug 2011 08:42:48 PDT
How to find perimeters
How to find perimeters - More DIY How To Projects]]> andyspam  This is a basic tutorial on how to find the perimeter and areas of polygons, and circles. With the help of this instructable you will be able to find the perimeter of a pentagon, square, or any other polygon. You will also learn how to find the circumference of a circle. Squares. Squares are v...
By: andyspam

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Tue, 16 Mar 2010 17:17:32 PDT
Test Tools: A fairly simple 555 tester. Corrected and updated.
Test Tools: A fairly simple 555 tester. Corrected and updated. - More DIY How To Projects]]> Goodhart Here I will give a small circuit that will test whether the 555 timer you just tried in another circuit (and it either heated up or didn't work at all) works or not. Have you ever wondered if it was your circuit, or whether might have fried your 555? Well here is a way to test the little chip quick...
By: Goodhart

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Mon, 13 Oct 2008 19:02:16 PDT
Tapping a Square Hole (Square to your material that is!)
Tapping a Square Hole (Square to your material that is!) - More DIY How To Projects]]> ruzter I have always been vexed by having to tap threads in a hole so that the threads are square to the top of the material I was tapping. I found a nice solution using a block with a groove in the side. Insert tap into hole Start by putting the tap in the hole. Notice the tap I am using has a somewhat...
By: ruzter

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Fri, 3 Oct 2008 16:18:10 PDT
Square 2+ Digit Numbers Mentally
Square 2+ Digit Numbers Mentally - More DIY How To Projects]]> purduecer For my first Instructable, I posted my first Instructable about a fun trick I had learned back in junior high for taking the cube roots of large numbers (6 or more digits) mentally. It was a well liked and well received 'ible, getting featured and making the popularity section in spite of being of ...
By: purduecer

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Mon, 4 Aug 2008 00:06:04 PDT
▒.::*,Awesome Design (Microsoft Paint),*::.▒*./
â–’.::*,Awesome Design (Microsoft Paint),*::.â–’ - More DIY How To Projects]]> Flumpkins I will show you how to make an awesome design using Microsoft paint, or just a pencil and paper!! P.S. Please rate and vote for the book contest. Thanks a million! How to start This is how you start: Just a rectangle/square Getting the cool part started So this is how you start the awesome i...
By: Flumpkins

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Sat, 3 May 2008 06:09:19 PDT