Posted January 1, 2013 by Chris

“A compass can be a valuable sensor that your robot can use to navigate the world. The Dinsmore 1490 compass is a cheap and durable unit that is relatively easy to interface to. It provides 8 headings (N, NE, E, SE, S, SW, W, and NW). 4 signals, N,S,E,W are read by the Basic Stamp II controller to determine the robot’s heading.”

Posted December 19, 2012 by Chris

“The FFT operations are done in 16-bit fixed-point. These 128 point FFT processes, applying window, butterfly operations and scalar output, could be executed in real-time (within 7.3 msec). This is pretty fast considering it is processed with only a cheap microcontroller. The spectrum bars are displayed in order of fundamental frequency x 0 (DC component), fundamental frequency x 1, x2, x3, … from left to right.”

Posted December 16, 2012 by Chris

“The system uses accelerometers to detect the user’s head tilt in order to direct mouse movement on the monitor. The clicking of the mouse is activated by the user’s eye blinking through a reflective sensor. The keyboard function is implemented by allowing the user to scroll through letters with head tilt and with eye blinking as the selection mechanism.”

Posted December 15, 2012 by Chris

“I took a class on digital controls at the UW this summer, and the class included a project option. I’d wanted to build a balance bot for a while, so this was the perfect opportunity. ”

Posted December 14, 2012 by Chris

“This website describes the design I came up with, documents the step-by-step construction process, and includes all the electronic diagrams and software you may need if you want to build your own magnetometer, should you attempt to do so.”

Posted December 11, 2012 by Chris

“In this article, we will explore how to translate analog voltages from an IR proximity sensor into digital information that we can use to determine distance away from an object. Depending on how far away the object is, a different tone can be heard.”

Posted December 7, 2012 by Chris

“This project implements a real-time audio spectrum analyser using a PIC18F4550 8-bit microcontroller. The spectrum frequency analysis is performed by a highly optimised 16-bit Fast Fourier Transformation (FFT) routine coded entirely in C. The output from the FFT is displayed using a 128×64 graphical LCD to allow a real-time view of an audio signal.”

Posted December 1, 2012 by Chris

“This project has been an astonishing little journey. Many of my previous projects were characterized by an amazing outpouring of effort to build something highly intricate and ultimately invisible…A little bit of work and a little custom design to create something new and exciting that I can immediately use in my everyday life. It also happens to be a sex toy.
In other words, I wanted to hack something I actually use: my vagina.”

Posted November 27, 2012 by Chris

“For the past two days I have literally lost my patience with Qik 2s9v1 dual serial motor controller. I have referred so many website and I could not make this controller work. After hours of searching I found this library which was compatible with Arduino 1.0…..Once that got the issue resolved I jumped into controlling the motor using a Proximity Sensor.”

Posted November 19, 2012 by Chris

“There are various touch sensors in different method, such as resistive (conductive film), optical (infrared), acoustic (SAW), capacitive and etc. This project is an experiment of capacitive touch sensor. This kind of touch sensor is well known as pointing device used in portable PCs.”