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hola, mi nombre es mauricio y soy algo nuevo aprendiendo de arduino , espero con algo de ayuda poder aprender mas de esto y eventualmente poder realizar aportes propios la comunidad. en esta oportunidad quisiera partir pidiendo una ayuda o el codigo que es mas bien simple (creo) tengo un arduino uno + lcd keypad shield + 4 relay base shield y necesito hacer un menu donde pueda navegar con los botones del lcd keypad shield para prender y apagar cada uno de los relays con determinada funcion. aun no soy capaz de generar mi propio codigo y en internet solo podido encontrar o codigos para los relays (pero sin uso del lcd y sus botones) o menus para el lcd keypad shield donde puedo navegar pero no tengo control sobre los relays. lo que estoy intentando hacer es copiar la idea de "jeeputer" que es basicamente prender y apagar cosas con los relays del arduino jeeputer estoy atascado con esto , ojala me puedan ayudar con el codigo. saludos!! a ver.. dej...

hello have error message libraries i'm using : " in file included c:\users\name\desktop\automatic-stewartplatform-master\automatic-stewartplatform\automatic-stewartplatform.ino:6:0: c:\users\name\documents\arduino\libraries\arduinomotionsensorexample-master/i2cdev.h:144:11: error: redefinition of 'class fastwire'      class fastwire {            ^ in file included c:\users\name\desktop\automatic-stewartplatform-master\automatic-stewartplatform\automatic-stewartplatform.ino:4:0: c:\users\name\documents\arduino\libraries\fastwire/fastwire.h:29:7: error: previous definition of 'class fastwire'  class fastwire        ^ exit status 1 error compiling board arduino/genuino uno. " can me error ? p.s. i've attached of libraries i'm using edit : i've solved changing of fastwire's fastwire in i2cdev library getting error " c:\users\aykut\documents\arduino\libraries\ard...

hi guys, don't know if bug or not did not seem severe enough put forward bug report sure forum staff redirect if needed. notwithstanding written in thread below (and maybe because of it) put down found. http://ubuntuforums.org/showthread.p...+icons+desktop operate ubuntu workstation windows domain share directories on windows server. how use 'connect server' link menu system. after adding credentials drop bookmark window. have done ever since hardy (with exception of intrepid) , have never had problems. have done karmic , seems work fine, when close window connection lose icons on display. please note here icons not removed 'desktop' directory. can navigate location , see them, not displayed. can restored logging off , on again (and goes without saying reboot). logging on display ghost icon shared directory on desktop. clicking icon link me the shared directory without problem once window closed - lo! no icons agai...

hallo wie man aus meinen vorheriegen post erkennen kann arbeite ich aktuell einem projekt (thermocycler) nun ist mein problem das ich eine kommunikation zwischen zwei microcontrollern habe und da der eine kein usb hat nicht wirklich überprüfen kann ob die kommunikation passt. deswegen habe ich mir überlegt einen osziiloskop/logic analysator zu holen. da das ja durchaus praktisch ist. nun ist meine frage? lieber ein standart ossziloskop holen und einen billigen logic analysator? oder diese stemlab. von den wertern schein es ja ganz schön zu machen? doch lohnt es sich es zu kaufen? grüße losspost was für eine art kommunikation möchtest du überprüfen (serial, i2c...)? ein scope oder logikanalysator hilft dir nur, wenn er das benutzte verfahren dekodieren kann. er kann dir aber nicht sagen, wo der fehler liegt. für lange leitungen gibt es spezielle testgeräte, aber dafür reicht oft schon ein scope, wenn man weiß, wie man es einsetzen muß, und wie man die prob...

i'm upgrading site j1.0.12 j1.5. template uses bunch of pngs transparency, , old j1.0.12 site, using ultimate png fix mambot joomlaworks.  no longer works 1.5 (in legacy mode). any suggestions? add template somewhere inside section: code: select all <!--[if lt ie 7]> <script language="javascript"> function correctpng() // correctly handle png transparency in win ie 5.5 & 6. {    var arversion = navigator.appversion.split("msie")    var version = parsefloat(arversion[1])    if ((version >= 5.5) && (document.body.filters))    {       for(var i=0; i<document.images.length; i++)       {          var img = document.images[i]          var imgname = img.src.touppercase()          if (imgname.substring(imgname.length-3, imgname.length) == "png")          {       ...

i downloaded mpeg movies http://www.archive.org , had problems after adding them premiere elements. mpeg-streamclip (or super) came rescue. here's story. after dragging mpeg2 file timeline, audio waveform turned flatline @ 1 minute , 20 seconds movie. happened "zorro (1937)," chapters 1 , 2, downloaded http://www.archive.org. virtualdubmod seemed remedy, going take 1 hour , 40 minutes convert. dumped , next decided use nero use smartencoding create quick dvd. worked well, picture dark , needed gamma correction, , audio barely audible @ maximum volume on tv. needed edit movie. i used mpeg-streamclip *demux* mpeg2 file separate .mpv , .mpa files. took minute -- lot better 1 hour , 40 minutes. added .mpv , .mpa files timeline in pe , waited conforming complete. happily audio there, , audio in sync video. added gamma filter video , set gamma=7. normalized audio, adjusted setting 12db instead of 17db. burned movie dvd using "western" dvd menu template. had no pro...

hello, i'm using ubuntu 7.04 on live boot right can move files hard drive on computer won't boot. work computer, contains 3 years worth of accounting , inventory information absolutely must recover drive. computer runs 1 sata drive, , has no ports additional drives. otherwise have 2 usb drives connected , ide connected through usb adapter. (the sata drive not work through adapter reason). have absolutely no access computer sata support. drives mount on 7.04, , can view files on sata drive - leads me believe drive isn't dead. i'm hoping move files need on 1 of usb drives. however, i'm getting flags when move files. -without- installing linux, there way me grant myself permissions move/copy/delete files on hard drives? otherwise, there simple way (that won't compromise data on drive) me re-do partitions sata drive can install linux? hi panramos, try: code: gksu nautilus this ...

i've started using arduino although have quite bit of experience of 'c' across years, c# more c++ not while. i found , tested often-quoted example doing several things @ same time , works ok found rather 'messy' - quite bit of repeated code structures. decided tidy it, while revising myself use of c++. i have created 'task' class hides (from user of class) continuous monitoring of milliseconds. doesn't attempt use  rtos task-switching (this has been done elsewhere , works has known limitations) - uses same methodology original 'several things' in neater way (i hope!). code size a  few more bytes original. haven't run servo checked serial debug things being done @ correct times. i'd grateful comments. i'm hoping used project needs run 2 or more tasks @ differing intervals (which appears pretty commonly on forum, seems). zip file attached. the point of tutorial teach reader how done. there dozens...

i'm attempting install reader 8.1.2 on laptop windows vista home premium. each time try, gets part way through installation, pops with: error 1935. error occurred during installation of assembly 'microsoft.vc80.crt,version="8.0.50727.163",type="win32",publickeytoken="1fc8b3b9a1e18e3b ",processorarchitecture="x86". please refer , supp... i've tried changing installer run in windows xp (sp 2) compatability mode, , tried running administrator. does have ideas might going on? i receive error message 1935 every time try download adobe 8.12 need driver download reader? hellpp!!!!! More discussions in Acrobat Reader adobe

i download aa reader file can transfer , install non-networked pc. have old version of aa reader on pc , want update it. currently web browser download process direct install on pc. want save file transfer other pc. how possible? gene hutton, "adobe reader 8.1.1 not download" #11, 3 mar 2008 11:03 am More discussions in Acrobat Reader adobe

i'm working on school project right have build line following robot using arduino uno, , h-bridge , gearbox. when run basic code on our car make wheels spin, 1 of wheels starts before other 1 , runs 2 second before other 1 kicks in. w have checked code, gearbox, changed wires , pretty sure wiring correct. used our wiring source http://hardwarefun.com/tutorials/creating-robots-using-arduino-h-bridge. appreciated. please read "how use forum" post , follow directions. Arduino Forum > Using Arduino > Motors, Mechanics, and Power (Moderator: fabioc84) > Wheel Starting Early arduino

hello, i decided use related items module on web page, would provide easy way of showing 2 articles @ same time, 1 in main content , 1 module, tying in spesific word in meta data, ...or thought... the problem module shows list of related articles, , not full article. make sense, of course, because there many articles, want 1 full article, using meta words go 2 articles. is there simple way of making happen? my programming skills limited, little come long way! thanks! did ever figured out??? Board index Joomla! Older Version Support Joomla! 1.5 Extensions for Joomla! 1.5

hallo, everyone. i did few steps forward arduino , family in past. want go futher on , beauty inside code. english isn't first language (maybe not second) , not programmer. indulgent - maybe - stupid problem: i have keypad 60+ keys here. every key should send different line rs485-bus. rs485 running, (including hardware) fine. i made similar project 1 year ago 70 buttons arranged in 2 matrixes. button-presses read out switch-case monster, releases of buttons also. in new project want prevent monster of cases cause it's crime debug here short relevant detail of code (the rest isn't secret, want set focus): code: [select] ... #include <keypad.h> const byte rows = 8; //eight rows const byte cols = 9; //nine columns = 72 buttons ara available char cdu[rows][cols] = { // upper-/lower-case matter!!!   {'1','2','3','4','5','6','7','8','9'},   {'0','a','b','c...

hi, as subject says purpose of 10k resistor r2 on due?  didn't make sense me unless requirement usb. thanks it discharges decoupling capacitors when power removed (probably chip reset reliably if power reapplied after).  nothing usb think. normally cmos chips not drain supply capacitors when power removed - in particular when xtal oscillator stops power drain become low.  reset / brown out detection circuitry may fussy how power rail(s) come on power (ie assume start @ 0v). its practice (esp higher voltages) arrange large capacitors discharge when power removed so not "live" during transport , storage - not issue @ 5v, as a circuit designer matter of course. Arduino Forum > Using Arduino > General Electronics > Purpose of R2 10k resistor on the due arduino

buongiorno tutti, oggi finalmente un pò di tempo libero per la mia prima incisione!!!!      sto preparando tutto l'occorrente, dovrò ovviamente (e purtroppo) farlo in casa visto che in garage le temperature sono glaciali. premesso che metterò le vaschette di sviluppo e incisione nella vasca e che questa sarà foderata in nylon, e premesso che ho già un imbuto per il recupero della maggior parte dei liquidi, come faccio poi lavare in casa gli oggetti sporchi di cloruro ferrico senza "lasciare il segno"? acido ossalico ed acido fluoridrico diluito sono efficaci, ma troppo pericolosi per essere usati con sicurezza in casa, specie il fluoridrico (anche se lo vendono come smacchiatore antiruggine, rimane pericoloso) ... pero' puoi provare con l'acido citrico ... in teoria, non dovrebbe essere troppo pericoloso, (in fondo ogni volta che bevi una limonata, ce n'e' dentro un po ), e dovrebbe riuscire ad attaccare la pa...

i working on project requires user press key on keypad when interrupt called. interrupt called pressing push button , function executes requires user press either 1,2,3,or 4 before proceeding make necessary computations. the problem when use keypad.waitforkey(), program stops executing. can please me figure out. here code function void addpassenger(){  if(digitalread(3))  {    //when led lights///user can choose option  digitalwrite(10,high);  lcd.clear();  key = no_key;  while(true){    key = keypad.waitforkey();    mydelay(100);    lcd.print("?");    if(key != no_key)    break;  }  state = false;  switch(key){    case '2':           if(!onboard[1]){           onboard[1] = true;           numberonboard++;           lcd.setcursor(0,1);   ...

hi all, switched ubuntu 9.10 , i'm struggling use gvim on system. installed gvim ubuntu 9.10 , when i'm trying start gvim, i'm getting error "*** buffer overflow detected ***: gvim terminated" shows big call stack after that. searched in google , got information compiling other options. did still no use that. think i'm not doing right way. tried install "aap" mentioned in gvim website, lead me same problem. want install , use gvim, i'm soo used it. editing other editors soo painful. please me installation procedure of gvim. can please send commands install i'm new linux environment. in advance. Forum The Ubuntu Forum Community Ubuntu Official Flavours Support Installation & Upgrades [ubuntu] Problem starting gvim Ubuntu

hi, i'm having graphics problems since upgraded 9.10 9.04 machine specs are: hp nx6125 laptop graphics controller: ati mobility radeon x300 processor: amd turion 64 mobile technology ml-32 / 1.8 ghz used opengl apps when had 9.04 installed since upgrade don't work. i've tried ati-driver-installer-9-12-x86.x86_64.run after installation , reboot got black screen @ every reboot , had uninstall cli read somewhere graphics drivers 9.10 may not working fully. output of glxinfo currently: name of display: :0.0 x error of failed request: badrequest (invalid request code or no such operation) major opcode of failed request: 135 (glx) minor opcode of failed request: 19 (x_glxqueryserverstring) serial number of failed request: 16 current serial number in output stream: 16 can i: 1 - upgrade drivers opengl works or 2 - downgrade again 9.04 thanks paul later..... installed ati binary x.org driver repo when run catalyst c...

latest official version of adobe reader installed on win vista business 32bits. preferences->page view->layout (these translations of german adobe, might inaccurate) set "page width, continues". however pdf documents open "page width, non-continues". it frustrating me. what should check setting working ? you can't. page view settings can specified in pdf document. More discussions in Acrobat Reader adobe

hi all, i need run small 3.5" touch screen lcd screen showing 2 sliders. each slider need move seperate nema 14 stepper motor (acting rotary encoder). my questions best arduino use this? any questions let me know. thanks first need identify specific touch screen. suspect determining factor. you may find useful in these links stepper motor basics simple stepper code ...r Arduino Forum > Using Arduino > Project Guidance > What arduino is best to use for my project? arduino

the installation of ar8 seems have trampled on acrobat5.0 i have been using acrobat 5.0 pdf writer year , have allowed ar update on months without hitch. the recent update ar8.1.2 resulted in pdf writer giving printer error. i reinstalled aa5 found it's aa5 opens when double click on pdf file. have used file properties > "open with" open pdf files ar8 aa5 opens. it's been suggested on ms xp news group install writer element of aa5. how do that? effect describe known problem? there way around it? More discussions in Acrobat Reader adobe

hi there! just getting started arduino after receiving great christmas gift. the serial monitor in windows ide works fine on example project (love meter) built, , able monitor serial port temperature updates, when try use web editor, begins display serial data, displays error saying serial port unavailable. if click again begin work disconnect shortly again. not sure why happening, idea of web ide , prefer keep using it. attached gif displaying problem. thanks advice! kd the reason have seen due power management in windows or error usbser.sys. lets presume power management issue easier deal with. first off check power management settings , set maximum performance. lets see if helps. there other steps take staring slowly. Arduino Forum > Products > Create > Editor (Moderator: smellai) > Arduin...

hello, i'm curious... out there have luck binding mysqld localhost or 127.0.0.1 interface? elsewhere suggested me try code: bind_address 127.0.0.1 or code: skip_networking in config file in 'locking down' xampp install mysqld isn't default listening on external interface. problem is... when make said edits , restart mysqld... starts , exits. hints or suggestions welcome, monte mysql local host until configure stand-alone sql server. not worry it. Forum The Ubuntu Forum Community Ubuntu Specialised Support Ubuntu Servers, Cloud and Juju Server Platforms [other] Binding mysqld to localhost interface Ubuntu

hello, i getting started ebooks , wanted download adobe reader. on download page there drop down menu asking version of windows have. have windows me not among choices. can tell me if choosing 1 work windows me? thank in advance, dani as far know nothing on ver. 7 work on me i have me machine , tried ver. 7 , said cannot install because needed newer version of windows. i found copy of 6 installer here @ work and i'm going try far i've managed use ver. 5.05 on me machine cheers ( «►rd◄» ) More discussions in Acrobat Reader adobe

hiiiii everybody... how install security program ubuntu ..? thank >> everything need know ubuntu security. http://ubuntuforums.org/showthread.php?t=510812 Forum The Ubuntu Forum Community Ubuntu Official Flavours Support New to Ubuntu [ubuntu] install Ubuntu

hi all, i've connected hc-05 bluetooth module arduino zero. arduino pins           bluetooth pins rx (pin 0)     ------->      tx tx (pin 1)      ------->      rx 5v                ------->      vcc gnd             ------->      gnd this code have. code: [select] char data = 0;            //variable storing received data void setup() {     serial.begin(9600);   //sets baud serial data transmission                                } void loop() {    if(serial.available() > 0)      // send data when receive data:    {       data = serial.read();        //read incoming data ...

after read through found there frontend translation option, cant manage make appear. i set option in joomfish config, made test user publisher right specially this. see normal frontend editor, edit original, no option translation. i read manual cover cover found nothing, doing wrong? (joomfish 1.8 joomla 1.0.13) embarrasment comes! desperatly trying find frontend joola made mistake , hit key while in non default languuage, , saved. did see translation has enetered in field default language is. in other words, translate frontend, select language , click edit button, , paste translation on default language. it's obvious it's easy miss (hiding in plain sight) Board index Joomla! Older Version Support Joomla! 1.0 Language - 1.0.x Joom!Fish and Multilingual Sites

hello all, i brand new arduino , have project hanging me up. goal hook 3 pir sensors through arduino uno able trigger 1 110v power supply have run for set time , turn off. i found example of using 1 sensor thinking if make work hook 2 more sensors , adjust code bit but............ i have hooked shown on webpage below have constant on, pir doesn't seem registering......any thoughts? i got schematic , code here (http://howtomechatronics.com/tutorials/arduino/how-pir-sensor-works-and-how-to-use-it-with-arduino/) thanks, joey hi, , welcome forum. prepaire 3 pins 3 pir sensors, e.g. this. int pirsensor1 = 8; int pirsensor2 = 9; int pirsensor3 = 10; do same 3 pinmodes. pinmode(pirsensor1, input); pinmode(pirsensor2, input); etc. and 3 sensorvalues. int sensorvalue1 = digitalread(pirsensor1); etc. if want output acitvated sensor1, or 2, or 3, use "or" operator. if (sensorvalue == 1 || sensorvalue2 == 1 || sensorvalue3 == 1) { that can shortened to....

hi! new gambas..i using ver 2.7 , using beginner's guide manual..following instructions, tried running sample program cannot view output on console screen/window..what should do? please help. lot.. hi, don't know mean 'on console'. start new project , name it. double click on fmain in project window on left display form. drag button (the picture says 'ok') toolbox (bottom right) onto form. double click on button1 display fmain.class , type 'print "hello world"' (without single parentheses) directly under public sub button1_click(). run program clicking right arrow in icon bar (or debug, run menu) , click button. see hello world in console. if compile program , run standalone not see console. could, example, add label form. click on fmain.form display form again. drag label (shows 'a' in toolbox) toolbox form. have default name label1. under '...

i want download curieble... why isn't there link on page? https://www.arduino.cc/en/reference/curieble seems idea include it... it's part of intel curie boards package. install package via boards manager , curieble library installed. if reason don't want can from: https://github.com/01org/corelibs-arduino101/tree/master/libraries/curieble when post links forum please use chain links icon on toolbar make them clickable. Arduino Forum > Using Arduino > Installation & Troubleshooting > Where is the Library Download link? arduino

we want create documents adobe readers can open without font substitution. according adobe's documentation there suppose standard built-in fonts not need embed fonts or risk substitution. i can not find list - have information on or can point location on adobe's site can research. thank >we want create documents adobe readers can open without font substitution. the current popular wisdom embed fonts. certainly have have pretty strong reason not to. in fact, built in fonts substituted people (e.g. flavour of arial substituted helvetica). the 14 fonts specially treated helvetica (-bold, -oblique, -boldoblique). not arial. times-roman, -bold, -italic, -bolditalic. not times new roman. courier (-bold, -oblique, -boldoblique). not courier new. symbol. zapfdingbats. aandi inston More discussions in Acrobat Reader adobe

hello everyone, i new community , neo pixels. bought quantity of 3 of these @aliexpress https://www.aliexpress.com/item/1m-5m-ws2812b-led-strip-30-60-96-144leds-dc5v-dearm-color-pixel-strip-black-white/32688092455.html?spm=2114.13010608.0.0.wfbphj and wemos https://www.amazon.com/gp/product/b01ixbwh9y/ref=oh_aui_detailpage_o02_s00?ie=utf8&psc=1 and lastly power supply https://www.amazon.com/gp/product/b005t6tlmi/ref=oh_aui_detailpage_o00_s00?ie=utf8&psc=1 i wanting set these lights in room relaxing vibe can control using phone via wifi. however, have been doing research on powering these lights not going possible daisy chaining them. due high amperage need. now, let's math each strip of neopixels, 1 led strip 5m long, 60 leds per meter. 1 strip equals 300 leds, (300 leds x 60ma if whites on / 1,000 = 18amps what left with? 3 strips daisy chained 54 amps! plus need spit out 5v. what ideas wiring , power methods? need random cables going on walls leds begin or end? ...

so finished project , works fine, if connect arduino using other cable 1 used before, or if use usb extender "the last usb device connected computer has malfunctioned , windows doesn't recognize it" error message. any idea how fix this? seems if usb cables not liked arduino/pc combination. if possible usb cable (from friend) of know working , try again. if error occurs able, technical wisdom @ end (although windows: never know, that's why linux or macs); if works - throw away other usb cables or mark them "not compatible arduino". Arduino Forum > Using Arduino > Installation & Troubleshooting > windows only recognises arduino with one cable arduino

hallo community, ich habe ein problem. um id-adressen auf einen display wieder zu geben muss man die daten die in einem array gespeichert sind in ein string umwandeln. soweit alles kein problem ich habe das mit der itoa()-funktion gewährleistet. Über den serial monitor bekam ich z.b. diese adresse "2d 82 aa 34 03 00 00 7f" . Über eine einfache if-abfrage habe ich bei der ausgabe eine 0 vorgeschoben, bei den werten die <=15 sind. dies ist aber bei einem string nicht möglich (meines wissensstand nach). auf dem display erscheint nur "2d 82 aa 34 3 0 0 7f" . was kann ich nun machen, dass das display mir auch großbuchstaben ausgibt und bei hex zahlen kleiner gleich 15 eine null vorgeschoben wird? danke für eure hilfe! viele grüße du kannst das lcd doch genau beschreiben, wie serial. das print verhält sich gleich (sollten sie zumindest). sonst mal bei toupper schauen. gruß tommy Arduino Forum ...

i want have joystick connected arduino-controller, , motor connected arduino-robot. i first trying test serial communication between 2 arduinos down serial wire. (i not plan run final project way, intend try wireless connection,, i've ordered cheap 4333mhz transmitters) i have joystick working me when in 1 arduino. podged codes how had them,, paste codes (not working or tried), can see hoped result joystick. , down mapped motor outputs on 2 pins, connected little h-bridge breadboarded out of regular to-92 4401 transistors. motor tiny @ present, works. using joystick can go forward , backward on single motor while working code on single arduino. i've split code slave-master , did manage communication between 2 devices,, no matter did on joystick recieved full forward power, , in serial monitor printed 255 only. ,, think did not encode motorinstruct down wire, , wire.read merely reading kind of string input or something, , being mapped 255 incidentally. code: [select] #...

hi, i'm trying follow instructions in blog post create arduino device emulates usb keyboard.  i've hit few bumps in road , last one's got me stumped.  best hope i'm using wrong version of v-usb arduino project.  got here: https://code.google.com/archive/p/vusb-for-arduino/ and required cutting out "usbkeyboard" directory under "libraries", , found built on top of old version of usb libraries, , saw guidance elsewhere whomp old copy new stuff here: https://www.obdev.at/products/vusb/download.html that replaced of files in usbkeyboard folder.  left compile error pretty easy sort, i'm getting link-time error now, , it's mystifying: compiling debug version of 'sketch1' 'arduino/genuino uno' error compiling board arduino/genuino uno debug build failed project 'sketch1' winterrupts.c.o (symbol plugin)*: in function attachinterrupt (.text+0x0)*: multiple definition of __vector_1 usbdrvasm.s.o*: c:...

hi, i'm trying produce .pdf report microsoft word greek characters. my problem can't see greek characters in "bold version" "regular" from microsoft word wrote in greek text , selected pushing bold buttom above. when (through) oracle application called bi publisher generate .pdf report see text regular , not bold.... where problem ? do miss fonts @ microsoft word level or @ adobe reader level ? any appreciated alex does symbol face have bold font instance? word may faking and reader not fooled. mike More discussions in Acrobat Reader adobe

hi there have pulled out following sql module shows recent topics, further filter specific board via variable lets $theboardid heres current sql code: select all select             mem.realname, m.postertime, ms.subject, m.id_topic, m.id_member, m.id_msg, b.id_board, b.name bname, t.numreplies, t.id_last_msg,             ifnull(mem.realname, m.postername) postername, " . ($user_info['is_guest'] ? '1 isread, 0 new_from' : '             ifnull(lt.id_msg, ifnull(lmr.id_msg, 0)) >= m.id_msg_modified isread,             ifnull(lt.id_msg, ifnull(lmr.id_msg, -1)) + 1 new_from') . ", left(m.body, 384) body, m.smileysenabled, m.icon         ({$str_table_prefix}messages m, {$str_table_prefix}topics t, {$str_table_prefix}boards b, {$str_table_prefix}messages ms)             left join {$str_table_prefix}members mem on (m...

salve tutti, sono nuovo nel forum e nel mondo di arduino. per scuola dovrei realizzare il progetto di un tachimetro (che funge anche da contachilometri) per una bicicletta (leggendo gli impulsi con un sensore reed). le misure della velocità e dello spazio percorso devo visualizzare su un display lcd 16x2. fino qui è tutto ok, poi ho voluto rendere il progetto più complesso, misurando la velocità istantanea e lo spazio totale (stampandoli sull'lcd), poi premendo un pulsante la schermata dell'lcd cambia e visualizza la velocità massima e lo spazio parziale (che potranno essere azzerati premendo lo stesso pulsante per almeno 3 secondi, ma questa utima opzione devo ancora pensarci). il problema sorge quando premo il pulsante per cambiare schermata, perchè (verificando con un led, quando è acceso si visualizza una schermata e quando è spento si vede l'altra), o si accende correttamente, ma dopo molto tempo da quando premo il pulsante (circa 3-4 secondi, e anche il disp...

hi! i'm have problem in using rs232. i'm using arduino mega 2560 interface between 2 device through rs232. my problem in reading sequence 13-byte in hex . i need 13-byte sequence device sends me through serial3, need first 2 bytes of sequence , play on variable , return confirmation string first 2 bytes correct. but besides problem have problem bytes read getting accumulated, generating errors in reading, how can solve these problems? if want communicate proper rs232 system need max232 or equivalent between , arduino convert voltage levels. rs232 voltage levels may damage arduino. and have not posted program have no idea other problems there might be. and when posting code please use code button </> code: [select] so code looks this and easy copy text editor see how use forum ...r Arduino Forum > Using Arduino > Networking, Protocols, and Devi...

i have arduino 101 connected dht11 , after has been running hour can read pin high.  trying debug i've used 2 boards removed dht11 reconnected it, used different dh11 , swapped between 5v , 3.3v in.  i'm @ loss , @ point kind of pointing issue arduino thought reach out here , see if there might missing might lead me closer figuring out going on. dht.h code: [select] // //    file: dht.h //  author: rob tillaart // version: 0.1.13 // purpose: dht temperature & humidity sensor library arduino //     url: http://arduino.cc/playground/main/dhtlib // // history: // see dht.cpp file // #ifndef dht_h #define dht_h #if arduino < 100 #include <wprogram.h> #else #include <arduino.h> #endif #define dht_lib_version "0.1.13" #define dhtlib_ok                0 #define dhtlib_error_checksum   -1 #define dhtlib_error_timeout    -2 #defin...

this tutorial first have seen using nordic's native language program nrf24l01 breakout.  compiles , runs in arduino ide (watch out instantiation of serial.begin() ), output confuses me.  telling me? code: [select] starting poor man's wireless 2.4ghz scanner ... channel layout >      1 2  3 4  5  6 7 8  9 10 11 12 13  14                     < |                                                                | 0 |                                                                | 0 |                  ...