301 Moved Permanently

Posted April 27, 2012 by Chris

“The mobile robot RTT is a rover-type research prototype Rocker-Bogie suspension, six-wheel independent, grouped in two sets of three wheels on each side of the vehicle and secured by means of an articulated structure. The rear wheels are linked to the robot’s body by a rigid arm known as Rocker, and the same is fixed by means of a pivot, a second arm known as the bogie, which holds the middle and front wheels.”

Posted April 26, 2012 by Chris

“In this article, we’ll use the CPLD Dev Board that I assembled together years ago and add an analog to digital converter IC, along with an LED bar and some current limiting resistors for output to verify the A/D converter is working. VHDL is listed as a pre-req as we’ll be using it to design our custom A/D interface.”

Posted April 25, 2012 by Chris

“In this post we will study the ADC ( Analog-to-Digital ) Module of the Microcontroller PIC16F917 . We will study a real circuit of PIC16F917 interfacing to a semiconductor Gyroscope.”

Posted April 24, 2012 by Chris

“I built a wireless robotics platform from a cheap R/C car, an Arduino with XBee shield, small microswitch sensors, and a Processing program running on a remote computer to control the vehicle. The vehicle is completely controlled by the code running on the remote computer which allows very rapid prototyping of the code to tell the vehicle what to do and how to react to the sensor events received from the vehicle.”

Posted April 23, 2012 by Chris

“According to the requests of some users, I’ve developed this new interface that allows to connect an ultrasonic parking sensor to the PC through a USB port. The whole project is based on a cheap parking sensor kit which can be purchased from many online retailers as well as on eBay and a simple interface based on the PIC microcontroller 18F2550.”

Posted April 22, 2012 by Chris

“Around time when I was beginning to learn about microcontrollers I had exchanged my laptop with a senior at college for his desktop – that’s because the only way I knew how to program an ATMEGA chip was through either a serial port or a parallel port…Over the time I learned about an inexpensive way of making a USB based AVR programmer called USBasp. It’s faster, cheaper and has the convenience of letting you program AVRs from laptops. ”

Posted April 21, 2012 by Chris

“A while ago I picked up a Xilinx XC95108 CPLD in a PC84 package for about $10 from a surplus electronics shop. When I built a CPLD project board with a PC44 socket I realized that I never wanted to deal with a socket like that on a home-etched board again, so in the back of my mind I had been looking for an excuse to surface mount the big chip. When I got the urge one weekend to build a PCI card I realized that there would never be another project that offered such easy routing of surface mount pads to card edge fingers.”

Posted April 20, 2012 by Chris

“Here is another weekend hack that plays around with my midi to AVR conversion script and library. With xmas fast approaching I thought it would be fun to convert a pacman candy tin to an xmas ornament and have it play music. Below is the result, pressing a button on the tin will cycle through three Ms. Pacman songs converted from midi files found online.”

Posted April 19, 2012 by Chris

“In this article we will take a look at a standard Arduino, understand what’s necessary for building small programs for it, use an example program and modify it to get a feeling for the basics. This article is meant for anyone who just purchased an Arduino Platform and wants to get started with it, so no Arduino robots this time around! ”

Posted April 18, 2012 by Chris

“In this tutorial we will take advantage of PIC18F14K50 pulse steering mode to drive the DC Motor and at the same time we will build the RPM (Rotation per Minute) counter to observe the PWM effect on the DC Motor speed and display it on the 2×16 LCD.”