Electronic Components. Chapter 10: Computers and Electronics: Homemade computer controlled radio transmitter. Building a computer controlled radio transmitter How would you like to send text messages to your friends without wires, and without an Internet connection, and without paying monthly fees? In this project we will build a very simple radio transmitter that you attach to a serial port on your computer. The computer then runs a free program that converts words you type into radio signals that are decoded by another computer, using a cheap radio receiver, and a sound card. With a little study, you don't even need the second computer, since the radio signals are in Morse code, which anyone can learn to decode in their head with a little practice.
It also comes in handy as a secret language, or as a way to send long distance messages with a pocket mirror. Click on photo for a larger picture The computer controlled transmitter needs these parts: (We carry most of the necessary parts in our catalog.) For our first transmitter, we will connect the parts with alligator clips. How does it do that? Fundamentals of a GPS guided vehicle. So you are interested in building a GPS guided vehicle?
Well this is not for the beginner. This walk through does not hold your hand. I am expecting that you know things about motor drivers, micro controllers, and general electronics. Its a lot i have to cover and so some things i must cover more than others that you should already know. Also read: You will notice there are now 2 setups. What would be needed: (short list basic setup) GPS CompassVehicle ( you might want one that can drive on grass and cement)Micro Controller (in this case a Arduino. What would be needed: (short list better setup) GPS (i might try and experiment with other GPS units but this is the one i have tried so far)CompassVehicle (any vehicle with a ESC and servo steering)Arduino (i used my custom board, you could order one from me but you can use any Arduino) Below are directions for the BASIC.
Here is a arduino reference picture: In this walkthrough we will be using the EM406A. NewSoftSerial nss(2, 3); Compass: to add in. For The First Time, Genetically Engineered Mosquitoes Are Released Into The Wild. An Oxford-based research firm has announced the results of a release of genetically modified male mosquitoes in the Cayman Islands, the first experiment with GM mosquitoes to take place in the wild.
From May to October of this year, Oxitec released male mosquitoes three times a week in a 40-acre area. The mosquitoes had been genetically modified to be sterile, so that when they mated with the indigenous female mosquitoes there would be no offspring, and the population would shrink. Mosquito numbers in the region had dropped 80 percent by August, which the researchers expect would result in fewer dengue cases. Since it's only females who bite humans and transmit diseases like the untreatable dengue fever this study examined, British biologists suspected that introducing males sterilized by a genetic mutation into the gene pool could dramatically decrease their numbers over time.
Verbatim's diminutive MediaShare Mini NAS: memory not included. Squier Stratocaster for Rock Band 3 set to tour March 1st for $280.
A New Vision of Television: Smart TV Powered by the Intel® Atom™ Processor. Samsung Galaxy Tab as Home Watcher remote control (video) Infrared Nerf autocannon hunts predators, little sisters too (video)