Electronic Design Software

anyone got an ELECTRONIC DESIGN?

please give me the shematic diagram of this electronic design that uses cellular phone to control remote household appliances... or if you have any other interesting designs, please share it with me... internet sources too.. thanks

Public Comments

1. "household appliance" eh? just what sort of appliance did you have in mind? perhaps an Improved Efficiency Dishwasher? I only found one "schematic diagram", and it is for only limited models of one specific brand of phone, the project is really more a software project than a wiring one, but this page seems to have a link to the code as well as a schematic: http://www.riccibitti.com/tinyplanet/tiny_article.htm There was a least one SMS appliance built (a kettle) , but apparently just as a demonstration: http://pointlessbutcool.com/gadgets/_readywhenur There are commercial controllers available that will interface cellular communication networks with other equipment: http://www.esylux.com/de/en/produkte/katalog/product_details.php?product_id=RI44100064388&lang=en http://www.home.telkomsa.net/ComPic/CellSnitch02.htm Here's one that is a kit, but includes a preprogrammed micro controller so you don't have to do that part, and it is pretty cheap, well maybe, depending on the currency conversion rate, and shipping,, assuming it can be shipped internationally (unless you happen to be in Australia) http://www.jaycar.com.au/productView.asp?ID=KC5400
2. Here is a curcuit diagram which can switch up to 9 "things" on and off, corresponding to the digits 1 through 9 of the telephone key-pad). http://www.electronic-circuits-diagrams.com/remotecontrolsimages/2.gif The DTMF signals on telephone instrument are used as control signals. The digit ‘0’ in DTMF mode is used to toggle between the appliance mode and normal telephone operation mode. Thus the telephone can be used to switch on or switch off the appliances also while being used for normal conversation. The relays must of course be designed to handle the voltage and current of your "appliance". A more simple method I know of is using a code of rings. The advantage is that you don't have to pay telephone charges to control your items. And the circuit is simpler, too. A microphone next to the telephone detects the ringing, and each ring represents a "pulse". Say, you have programmed the controller that "3 - hang up - then 5 - hang up - then 2" rings is the "secret code" to turn on the coffee maker, then this is what you have to do on your phone (and hardly anyone else will do that accidentally). The circuit diagram for that version is here http://www.electronic-circuits-diagrams.com/microcontrollers/1.gif Finally, you can buy a ready-made one from X-10, but they threaten to discontinue that item.... http://www.x10.com/products/x10_tr16a.htm