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Triangolazione Ultrasonica: Quali sensori devo utilizzare?

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buongiorno tutti ho in mente un progetto per una periferica di puntamento per pc, che richiede di individuare in uno spazio tridimensionale due sensori. vi spiego meglio, anche se in modo spiccio: tramite questa periferica, vorrei riuscire posizionare la freccia del computer, nel punto dello schermo in cui sto indicando, tramite triangolazione. per l'esattezza questa periferica richiede la triangolazione di due diversi punti teorici (a e b): creando così una retta virtuale passante per entrambi, possiamo indicare un punto in un piano (il monitor). nel punto d'incontro tra la retta e il piano, ci deve stare la freccetta di windows. ora, il mio primo pensiero è stato un sonar. utilizzando sensori ultrasonici e gestendo ritardi è possibile calcolare una o più distanze, tutta via l'elemento eco non fa per me: nella periferica di puntamento (immaginate sia una bacchetta) dovrebbero essere posizionati all'estremità, 2 emettitori di ultrasuoni con 2 frequenze dive...

Is there a good blogging component, plug-in, or??? - Joomla! Forum - community, help and support

okay, i'm brand new joomla, non-technical , hoping right choice me. i work on wordpress installation , design when guy brought joomla. in of templates have looked at, built-in blog looks different wordpress, features no categories or blogrolls, no recent post listings, , without many of features part of wordpress, [spam], , rest of blogging platforms. i'm guessing it's component or plug-in, , there may others on joomla market, can't find them. please advise if wrong forum discuss in, , can find blogging tools. blog huge part of overall web presence , if can't make work joomla, i'll have go wordpress , link it. not seemless suppose, functionality issue. thanks help. please remember, i'm not coder , i'm brand new. go easy. thanks. you can try jd wordpress http://projects.j-prosolution.com/en/projects/os-projects/project-openwp.html Board index Joomla! Older Version Support Joomla! 1.0 Exte...

Thread: trying to install apps (third party)

hello, i'm new linux, got dual boot laptop , running. trying install third party program (happens aircrack - ng) used synaptic package manager install it. said worked, don't know is, hoped under "applications" not. there file in "bid" folder it. how under applications menu? thanks jim the "bid" folder? mean "bin" folder? anyway, if right click application menu, , click edit menu, there option add entry. can browse command, change icon, etc. Forum The Ubuntu Forum Community Ubuntu Official Flavours Support General Help [ubuntu] trying to install apps (third party) Ubuntu

Problem mit SPI

hallo, ich möchte ein nokia 5110 display und eine sd karte über ein mega board betreiben. leider zeigt mir das display nichts an. code: [select] #include <sd.h> #include <lcd5110_basic.h> const int chipselect = 53; float datalog = 0; float datalogalt = 0; int value = 10; lcd5110 myglcd(52,51,49,48,46); extern uint8_t smallfont[]; extern uint8_t mediumnumbers[]; extern uint8_t bignumbers[]; void setup(){   serial.begin(9600);    serial.print("initializing sd card...");   // make sure default chip select pin set to   // output, if don't use it:   pinmode(53, output);    // see if card present , can initialized:   if (!sd.begin(chipselect)) {     serial.println("card failed, or not present");     // don't more:     return;   }   serial.println("card initialized.");     myglcd.initlcd(); } void loop(){    data...

EasyVR e modo Stand_BY

bom dia! caros amigos estou  com uma certa dificuldade em  colocar o easyvr em modo stand_by e acordado-lo modo ,alguém já fez implementação dessa função que poderia me ajudar ou enviar o código que faz essa função desde já agradeço. http://playground.arduino.cc/learning/arduinosleepcode Arduino Forum > International > Portugues > EasyVR e modo Stand_BY arduino

IR controlled relay with timer

hello again, i'm trying close relay 2 seconds every ir signal received. found simple code on ir examples library , seems work other timing out. stands now, relay stays open or closed until next button pressed.  want close 2 seconds every time button pressed.  setup allow me kill power servos , conserve battery life. here code ir relay library any input on how make code time out appreciated! code: [select] void dump(decode_results *results) {   int count = results->rawlen;   if (results->decode_type == unknown) {     serial.println("could not decode message");   }   else {     if (results->decode_type == nec) {       serial.print("decoded nec: ");     }     else if (results->decode_type == sony) {       serial.print("decoded sony: ");     }     else if (results->decode_type == rc5) {       seria...

Pre-Loading Images

hi, i have image based navigation layout left of page. designed layout using css, , no javascript. possible preload images when page called up? below example page: http://sfrcreations.com/earring_p1p1.html thanks! -- if haven't already, served searching through archives answer question. archives can found here: http://groups.google.com/group/macromedia.dreamweaver http://groups.google.com/group/macromedia.dreamweaver.appdev "engmix" <webforumsuser@macromedia.com> wrote in message news:eds991$3co$1@forums.macromedia.com... > hi, > have image based navigation layout left of page. designed > > layout using css, , no javascript. possible preload > images > when page called up? below example page: > > http://sfrcreations.com/earring_p1p1.html > > thanks! > More discussions in Dreamweaver support forum adobe