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Piezo speakers are quite fun components. They can play as well as detect frequencies. The basic idea behind making them play tunes is to send a "Square wave" of the corresponding frequency. By Square wave, I mean , the HIGH and LOW time should be equal.
How do we get the high and low time out of note frequencies?
High time = Low Time = 1/(2*NoteFrequency)
For Example, a basic C note (western musical notation) is 261 Hz. (http://www.phy.mtu.edu/~suits/notefreqs.html)
I have 4 programmable robot kits here is a small comparison between them.
I bought this robot from hongkong for US$ 55. A good price for beginner robot. It came with serial port transceiver but my lapy had no serial port so i tried it when i came back to India. This is based on AVR. It comes as a soldering kit. You have to prepare program in any compiler for avr
Easy to assemble
Man has known to grow lazier, over the entire evolution phase. lazy - so how to do work??
Catch an animal and 'make' it do his job!!
This evolution of mans' laziness has seen all kinds of animals - smaller than and larger than man himself- put to use as his slave, to do his job at his bidding.
Then came the Machines. They did better than Man & his slave animals put together. Animal slaves were fast replaced by Machines in all walks of the Human race.
Updated 01-03-2010 at 12:06 AM by docel
The branch of physics that deals with the action of forces on matter is referred to as mechanics. All considerations of motion are addressed by mechanics, as well as the transmission of forces through the use of simple machines. In this article , the goal is a mechanical goal (placing blocks into a bin) and electronics are used to control the mechanics.
Describing motion involves more than just saying that an object moved three feet to the right. The magnitude and direction of the
Updated 03-06-2010 at 01:47 AM by support
That is the first question that strikes anyone who wants to make robots to perform a task. By “type”, I mean the method of locomotion or movement of the robot. Legged or wheeled? How to choose among these ? Let me give you (or try to give you) a slight idea to help you out.
There are many different locomotion types for small mobile robots. Generally,they can be divided into two types: legged and wheeled. Legged locomotion is very versatile but not as efficient as wheeled locomotion
Updated 03-06-2010 at 01:46 AM by support