The Etchinator - low cost PCB spray etcher (under $100)
What/Where/Why/How? What is etching and what is spray etching? Etching is the process of eating away a pattern on a target material by using an etchant liquid that attacks the target material. The...
View ArticleArduino Laser Tag - Duino Tag
Duino tagger- General introduction Duino tag is a laser tag system based around the arduino. Finally a laser tag system that can be tweaked modded and hacked until you have the perfect laser tag system...
View ArticleControl an Arduino With a Wristwatch (TI eZ430 Chronos)
The watch The Texas Instruments eZ430 Chronos is a cool gadget. It has bidirectional radio communication, and a whole bunch of sensors: temperature, pressure, acceleration. In fact, it is a development...
View ArticleBuild a Thermal Flashlight - Light Painting with Temperature
Inspired by the Public Laboratory and having just finished a round of college applications, I decided to experiment with thermal imaging on the cheap. Thermal cameras are expensive. Even at low...
View ArticleMake a working lock and key
In this instructable I'm going to run through the process of making a working 5-lever mortice lock and key. Steps 1 & 2 are an overview of 3D printing requirements and how the mortice lock works,...
View ArticleBuild a Laser 3D Printer - Stereolithography at Home
Here is how to make a Stereolithography 3D Printer. It is still a bit of a work in progress but so far it is working pretty well. This is mainly an experiment which started as a Delta Robot...
View ArticleWall Sconces with Hidden Weather Display and Tangible User Interface
Videos of project in action below!!! Disclaimer: This is an abbreviated description of the project since I did not have time to do a full step-by-step instructable in time for a contest. However, I...
View ArticleAnimatronic Tentacles with Arduino
***Disclaimer***This instructable is documentation for a work in progress. Although the project is not yet complete, it has reached a place where I believe it can begin to be beneficial to other...
View ArticleHow to Make a Coaxial Air Cannon
This video shows how I make a compact 2" bore air cannon with a coaxial piston valve. To understand how these valves work examine the third animation in the following link:...
View Articleair horn office chair prank
The office is a great place to prank your coworkers. Interrupt the white noise of typing keyboards and the hum of the photocopier with a blaring klaxon hidden under someone's office chair. This is the...
View ArticleHow to make an affordable 'Vein Finder', for use during venipuncture
One of the hardest parts of taking blood can be finding a suitable vein. Some patients are 'difficult sticks'; their veins are either very small, and/or deep, preventing health professionals from...
View ArticlePysanky - Ukrainian Egg Dying
Pysanky is a traditional craft in Ukraine and Poland. The method is similar to batik - patterns are drawn on the egg with wax, which then protects the covered areas from the dye that is applied. By...
View ArticleHow to build a Multi-Touch surface
Multi-touch gestures are the latest and greatest way to interact with your computer. However, commercial systems are not widely available and are expensive. Fortunately, you can do it yourself better...
View ArticleThe Complete Guide to RC Electronics
Hello, my friends. I have often found hobby RC electronics to be of interest in my projects due to their apparent simplicity and ease of use. However, it took me a while to figure out how to put...
View ArticleGlass nixie
A Nixie tube is an electronic device for displaying numerals or other information using glow discharge. But they need about 200 volts to glow and it makes them dangerous and difficult to drive, at...
View ArticleArduino Combination Door Lock: Lockduino
Ready to put a combination lock on your door to keep out intruders? You've come to the right place! In this i'ble I will show you step by step how to make a combination lock for your door! Watch this...
View ArticleArduino RFID Lock
The Arduino RFID lock How does it work? The Arduino RFID lock is a lock that can be opened easily, but is secure. The lock works with a server database that can register card codes. On the door there...
View ArticleHow-To: Make an RGB combination door lock
Putting a custom designed electronic lock on your space seems like a geek right of passage. For our latest workspace, we decided to skip the boring numbered keypad and build a custom RGB backlit keypad...
View Article3D Printed Sound Bites
After I posted my 3D printed record project, I received an interesting comment from Instructables author rimar2000. He described an idea he's had for a while about a strip of material that has audio...
View ArticleIce Cream Sandwich Recipe
Homemade Ice Cream Sandwiches? Yes, please! Make your own flavor combinations with this easy Ice Cream Sandwich recipe! I like ice cream sandwiches any time of the year, but I find the basic...
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