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Lab3 - Laboratory for Experimental Computer Science

Lab3 - Laboratory for Experimental Computer Science
Here we show a little Theremin module which plugs onto a Arduino Board that gives out the tune to a speaker or puts out the tune as control signal like MIDI, Servo etc. We were using this device not only as a musical instrument, various kinds of proximity sensors, pointing devices or as interface in combination with Processing, Max or Pd have been build with this technique. How it Works The Theremin Module itself is as little LC type Radio frequency oscillator which generates a radio wave and gives out the frequency signal to the Arduino board. An Antenna connected to the LC resonator provides the Theremin effect when a person or some conductive material is placed next to the antenna. This leads to a slight frequency deviation of the oscillator frequency which is registered by the Arduino software. Video The Oscillator If you have a look at the Oscillator schematic you see the components L1 and C1 that are forming a resonator responsible for the oscillator frequency of about 4.1 Mhz. Files

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MakeaFake : Nerdipedia The epson ink Chip Replacement Hack. Some nitty gritty on creating a fake epson chip or chip eliminator. 5'th Sept 2008, It shouldn't be all that hard to make a fake Intellidge (AKA ink chip). Unless you are making ink carts this is pretty pointless. Fun Stuff Let’s set the scene. It is Thanksgiving Day, the table is set, the food is ready, and your wife breaks two cork screw pullers in the cork of the wine bottle. How do you get the cork out without digging it out and making a complete mess? Dmitry Grinberg Apr 16, 2012, 2am PDT: Small schematic fix (SD card's SCK & VDD were switched) Apr 3, 2012, 1am PDT: new source code archive uploaded. Sped up emulator (6.5KHz->10KHz) using FPM mode on RAM & changed icache config, updated porting guide, included kernel image & new smaller ramdisk, new full image Mar 29, 2012, 7pm PDT: new source code archive uploaded.

Robotic Xylophone With the holiday season approaching, we are always looking for a way to add a little Christmas spirit to our office. This year, we thought it would be awesome to have a musical instrument that we could control with a NerdKits microcontroller kit, and have it play holiday music. Keeping true with the NerdKits spirit, we decided to build a xylophone, build the whole thing from scratch, and teach about solenoids and shift registers along the way! Our homemade xylophone was a great way to put our milling machine to use cutting the bars for each note, and using the lathe for the solenoid forms and steel slugs.

Flute Finger Hole Locations Determining approximate finger hole locations for a simple 6 hole flute is somewhat complicated. Much of what follows is due to the analysis of A. H. TI-Nspire Programming - TI-Basic Developer The TI-Nspire is a unique calculator in the BASIC series. The calculator's programming system is remarkably similar to that of the 68k's hardware, but because the Nspire's internal core is different, it needs a section on its own. Unlike all the older TI versions, the Nspire does not have a home screen or a graph screen. Instead, the calculator runs on a document that has five applications: Calculator, Graph and Geometry, Spreadsheet, Notes, and Statistics. The programming operates under the Calculator application. Although the Nspire makes good use of form and screen resolution, the programming is very limited compared to older versions.

Blondihacks Pushing Johnny’s secret buttons. Every pinball machine from about 1980 onwards (the solid-state era) has a diagnostic control panel inside it. This is a set of buttons used to control service menus for running game tests, setting prices, gathering gameplay statistics, modifying game rules, and anything else an operator or technician might have needed to do. It has arguably become an even more important tool as these games age, because breakdowns become more frequent. Personally, I’ve probably spent as much time in those service menus as I have playing the game. At least, some days it feels like that.

bunnie's blog We’re launching a crowdfunding campaign around our Novena open hardware computing platform. Originally, this started as a hobby project to build a computer just for me and xobs – something that we would use every day, easy to extend and to mod, our very own Swiss Army knife. I’ve posted here a couple of times about our experience building it, and it got a lot of interest. So by popular demand, we’ve prepared a crowdfunding offering and you can finally be a backer. Background

AASaver « Rayshobby Update AASaver 2.0 is now available. Buy it from Rayshobby Shop.For details about AASaver 2.0, assembly and usage instruction, please check this blog post. Order You can order the AASaver from my hobby shop. The kit comes with one assembled and tested circuit board, one AA battery holder, a pair of bright white LEDs (for use as flashlights), two breadboard headers (for use as breadboard power supply), and two screws and nuts. The Mechanical Vivarium of Dr. Iguana 5V Boost Switching Regulator Here's a little project I put together for a friend. He wanted to build a project that ran off 5V but didn't want to use a 9V battery. I found an interesting part on Digikey that can take the output of 1 or 2 AA or AAA batteries and boost it to 5V.