HOW TO – Build a Beetle Robot
Here’s a great how to for simple bot “The following article will show you how to build a simple robot, called “The Beetle Robot”. It’s great for beginners and easy to do. Most of the components can be bought for much cheaper at Digi-Key, Jameco, or similar. At Solarbotics you can find the dual AA battery holder and the Mabuchi motor. You can find these components at any good electronic store.” Thanks William! Link.
This article describes a servo motor controller that is able to control up to 16 hobby servo motors and its based on the AT90S4414 microcontroller (a member of Atmel’s AVR Family). This servo controller is ideal in cases of building small robotic arms (3 to 5 axes) or small walker mobile robots (quadrapods or hexapods). The servo controller receives position commands through a serial connection which can be provided by using one I/O pin of another microcontroller, or a PCs serial port!
GoRobotics writes “LEGO is finally rehauling it’s Mindstorms kit. At the Las Vegas Consumer Electronics Show (CES) in early January, LEGO Group announced LEGO MINDSTORMS NXT, a new system that redefines the consumer robotics category which the company created in 1998. Robot Magazine has pictures and video. Press release
Greg writes “Here is a line following robot that will follow a line, and at the end will stop for three seconds. After pausing for three seconds it will retrace its steps and drive in reverse. It is made with a sensing circuit, and H-bridge motorcontroller, and a microcontroller.”
Dave is hacking up the new Furby “Yesterday I went and bought the New Furby which just came out in October this year. The new Furby is a pretty darn advanced toy for only $30, if you haven’t seen one before they are basically armless Mogwais with beaks. New Furbys are powered by the Sensory Inc’s RSC-4128 which is a multi-purpose microprocessor that does everything from voice recognition to text-to-speach to IO to DTMF output. After reading through the white paper for the RSC-4128 I was pretty sure that the Furby would be quite the hackable robot, so I decided to take a look inside and see what hacking would entail.” [

“This application note describes a circuit designed to control the speed of a dc motor used in radio-controlled boats. The electronic speed controller (ESC) is a “no-brake, forward-only” controller. I wanted to keep the part count low and the circuit simple so a couple features were sacrificed. The circuit does not have: over-current protection, over-temp protection, polarity protection, or over/under voltage protection. All the parts can be obtained from digikey distributors. The circuit was designed with a popular 12-cell model boat motor in mind (graupner speed 700). This project was my first attempt at using Bascom-avr and Atmel microcontrollers. ” Thanks JasonR!