Posted December 14, 2014 by Chris

"For my embedded systems lecture I need a wireless connection to the robot we will develop during that course….Alex Vecchio pointed me to a $2.75 (!) wireless module featuring the Nordic Semiconductor nRF24L01+. Exactly what I needed, with an incredible low price :-). So I ordered a handful modules, and after a few hours, I had two FRDM-KL25Z talking to each other:"

Posted December 13, 2014 by Chris

"A transmitter location on the east coast of the USA was used. The tests were conducted on HF radio frequencies on and around 6925 kHz, using a state of the art solid state transmitter with a standard off the shelf MOSFET as the RF final amp. Each monitoring post was equipped with the highest quality HF receiving gear and highly sensitive monopole receiving antennas….The results of the experiment clearly speak for themselves, as transmitter power went down, the signal strength went up."

Posted December 10, 2014 by Chris

" The camera has been fixed in its position and the reader photographed. Using a tag connected to an LED we paint in the edges of the readable volume with a long exposure and animate them to show the form."

Posted December 7, 2014 by Chris

"In deciding on a project we looked for a challenge that would have a good mix of hardware and software problems. We ended up primarily concentrating on looking at unusual display technologies and decided that a persistence of vision(POV) display would be a good balance."

Posted December 6, 2014 by Chris

" I used a 434MHz transmitter and receiver from Sparkfun, and had great success with these cheap devices. I also used a simple LM34 Fahrenheit temperature sensor, two Arduinos, and a two-digit LED display to show the temperature at the receiver end."

Posted December 4, 2014 by Chris

"This weekend didn’t afford me enough time for personal projects, but I did have a few moments to solder connections onto the LED system on the RC police car I’ve been modifying."

Posted December 3, 2014 by Chris

"I’ve simply connected the UART of the bluetooth module to the built-in UART module in ATTiny2313 so they can communicate directly with one-another. A portion of PORTB is used to control the various functions in the model car. The ATtiny2313 firmware goes through a loop which consists of reading the UART, and then setting the outputs and servo position."

Posted November 24, 2014 by Chris

"To put it simply, it’s a robot arm that copies you. Think motion capture, but the results you see in real time on hardware…I did not build this thing in mind with any one specific application. What I wanted was an intuitive interface for controlling a robot. This robot could then be sent out into situations that humans can’t or shouldn’t go. "

Posted November 22, 2014 by Chris

"In this project, as promised before – we are going to demonstrate a PIC18F4550 microcontroller interface to IR sensor circuit….however you can do some more intelligent operations by adding some more logics to the microcontroller coding. Interfacing infrared Proximity sensors with Microcontroller is quiet easy."

Posted November 7, 2014 by Chris

"This was my first attempt at making a rc bike chassis using carbon fibre was for a Thunder Tiger Electric RC motorbike. The original frame panels were scanned and then traced in Adobe Illustrator. I then modified the layout of the panels to reduce weight and then exported them for cutting on our milling machine."