Distance sensors suggestions

-

hi all

ive got project im working on , need sensor detect distance of user +- 6 meters accuracy of 500cm.

it outdoor application , user , device moving about.

i have looked rf doesnt seem plausible , bluetooth(not sure that), have looked ultrasonic sensors need receiver or sender on user has timing issues , need rf modules send data etc unless guys know of ultrasonic sensors work receiver on device , sender on user communication between two?

please there has simple out there , cheap lol.

thanks or pointers chaps.

well, there ultrasonic distance sensors arduino... don't think each 1 has own frequency, suppose 1 can receive others signal. wiring arduino output ping input of 1 while listening echo of other *might* work. sync 2 duinos on few orders of magnitude faster, such rf, or connect wires , sync once , measure ping... being said, need ball of transducers , receivers. :d



Arduino Forum > Using Arduino > Project Guidance > Distance sensors suggestions


arduino

Comments

Post a Comment

Popular posts from this blog

Valutazione Template - Joomla! Forum - community, help and support

-
salve, prima di installare joomla, vorrei porvi tre semplici domande: 1) l'ultima versione in italiano di joomla, supporta questo template prodotto da gavik? loro scrivono che non è un semplice template, ma una vera e propria suite, ma vorrei una vostra opinione. qui sono descritte le funzioni della suite. 2) per sfruttare gli elementi che si vedono nella pagina, ad esempio quello in alto sinistra dove scorrono le notizie, occorre installare qualche componente aggiuntivo? 3) futuri upgrade alla piattaforma joomla, potranno inficiare il funzionamento o la compatibilità del template? vi ringrazio anticipatamente della disponibilità. 1) non vedo nulla di particolare se non una miriade di posizioni per blocchi 2) è un modulo se non sbaglio pagamento, ma adesso non ricordo bene 3) no. ti ricordo che devi installare joomla  1.0.12 Board index Joomla! International Language Support International Zone Italian Forum ...
Read more

SD Datastring Convention

-
i wondering if there preferred convention appending data logged?  see standard sd example uses: code: [select] void loop() {   // make string assembling data log:   string datastring = "";   // read 3 sensors , append string:   (int analogpin = 0; analogpin < 3; analogpin++) {     int sensor = analogread(analogpin);     datastring += string(sensor);     if (analogpin < 2) {       datastring += ",";     }   } creating string called datastring, , appending it, have seen in forums string not liked.  around this, code data logging looks this: code: [select] void sdupdate() {   datetime = rtc.now();   unsigned int hour = now.hour();   unsigned int minute = now.minute();   unsigned int second = now.second();   char datastring[100] = "";   char char_current_pay[15] = "";   char char_overall_pay[15] = ""; ...
Read more

ffmpeg h264_omx encoder - libomxcore.so missing. - Raspberry Pi Forums

-
linux raspberrypi 4.9.56-v7+ #1044 smp fri oct 13 15:23:13 bst 2017 armv7l gnu/linux fmpeg version 3.2.5-1 when try use h264_omx encoder [h264_omx @ 0x4eb940] libomx_core.so not found [h264_omx @ 0x4eb940] libomxcore.so not found tried apt-file find 2 files don't seem part of package?! where/how should find them? in advance! after research learned omx layer in raspbian handled libomxil-bellagio library. fact ffmpeg apparently expecting different library suggest there's wrong raspbian ffmpeg package? anyway, recompiled ffmpeg myself , got h264_omx encoder work. raspberrypi
Read more