Posts

Arduino Mega + elettrovalvole 9V

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ciao tuti, dopo ever letto attentamente il seguente topic: http://forum.arduino.cc/index.php?topic=71800.0 mi sono messo ad eseguire dei test nella mia elettrovalvola 9v (in quanto gardena non mi da nessuna info in merito http://www.gardena.com/it/water-management/water-controls/valvola-cordless-9-v/ ); ho rilevato seguenti valori: assorbimento in accesione ==> i=90ma tensione in accensione ==> v=2 v assorbimento in spegnimento ==> i=20ma tensione in spegnimento ==> v=0,4 v tali valori li rilevo solo se imposto il tester in ac e non in dc. se miei test sono corretti, la corrente in gioco è molto bassa e potrei eseguire un ponte h con b547c (ne ho molti ), ma non mi convince la questione della corrente alternata sul tester. ho provato anche far partire la valvola con un breve impulso direttamente dalla pila 9v e si accende correttamente prescindere dalla polarità ma non si spegne invertrendola; l'unico modo per spegnerla è riposizionare la pila nel modulo d...

Not Opening the SD file to upload to FTP

hello all i farily new arduino , programming in general, please bare me. i have been developing code read co2 sensor , ultrasonic range finder. code working great. i using surfertim's ftp upload/download code arduino playground. when load code arduino board works fine. the problem comes when try combine 2 codes. runs should until time upload files ftp. program gets stuck opening file on sd card, ftp upload not begin. after ftp try, co2 sensor producing number indicates not reading. any appreciated perhaps there problem in code.  if show code might able figure out going wrong. my first guess didn't close out file writing before tried read it. Arduino Forum > Using Arduino > Programming Questions > Not Opening the SD file to upload to FTP arduino

Thread: Change Name of Menu item

hai there option change name of menu item ?? example added code: xwinwrap -g -ni -o 0.6 -fs -s -st -sp -b -nf -- mplayer -wid wid -quiet in open tab of video files , has name xwinwrap in open menu want rename set desktop possible ? if yes please go ~/.local/share/applications ( .local hidden file in home folder should see blue icon name of xwinwrap right click on -> properties , give new 'display' name , icon if desired ( actual name userapp-xwinwrap-xxxxxx.desktop xxxxxx series of letters , numbers. can't changed not important wish Forum The Ubuntu Forum Community Ubuntu Official Flavours Support General Help [SOLVED] Change Name of Menu item Ubuntu

SD card not being read properly

i trying read numbers off sd card , i'm running trouble. ran cardinfo , had no problems (i've attached log below). on sd card, frames.txt has "200" inside it, , frame.txt has "00000010". when run program, serial monitor shows 48 frame.txt (instead of 2) , shows  50 frames.txt(instead of 200). here code, going wrong? code: [select] #include <sd.h> file myfile; void setup(){   serial.begin(9600);   pinmode(10,output);   if(!sd.begin(10))   serial.println("initialization failed.");   else   serial.println("initialization complete.");   myfile = sd.open("frames.txt");   if (myfile) {     serial.println("frames.txt:"); } else serial.println("failure"); byte k=myfile.read(); serial.println(k); } void loop(){ } cardinfo log: initializing sd card...wiring correct , card present. card type: sd1 volume type fat16 volume size (bytes): 513015808 volu...

Best way to get the most accurate angle ?

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hi, in order complete self-balancing project, @ first accurate angle. from understood, need , accelerometer , gyroscope. bought itg3200 , mma7660fc. actually, i'm using library seeedstudio gyroscope have question : i integrated angular acceleration problem when plateform gyroscop on isn't moving , initialise it, won't give stable measure: fluctuates -9.7 -10.0 degrees per second @ initialisation , -10.00 -10.5 @ others. this kinda problematic because in code have :  angle = angle + (dt)*(az+9.9505); (the value average calculated ) sometime, when "zeros" -10.00 -10.5, kinda fucks angle first question: normal or should totally stable ? a lot people mention fact gyro drifts i'm unsure if talking same problem. i've seen lot  complementary/kalman filter , i'm planning use these better angle first know if gyroscop fine. other point : accelerometer enough or magnetometer needed well? thanks answers, advices welcome ! ...

Box around Flash in Website

all flash work i've designed, when open site element is, box around flash....what box? if click on box, disappears. if put mouse on flash, box appears around flash. there way can fix or setting n browser and/or flash player? here example: http://bradyallmondds.com/. place mouse on header, , you'll see mean. thanks, guys , gals! chuck yes. stop using ie. short of that, 'swfobject', gets around problem. More discussions in Adobe Animate CC - General adobe

Centipede Shield (64 I/O Ports) in Deutschland kaufen?

hallo, ich möchte mir gerne das centipede shield kaufen. leider habe ich es nur hier gefunden: http://macetech.com/store/index.php?main_page=product_info&products_id=23 der shop macht auf mich aber keinen vertrauenswürdigen eindruck, denn ich finde nirgendwo ein impressum, eine anschrift oder sonst etwas, um zu erfahren, wer denn diesen shop betreibt und bei wem man da bestellt... deshalb meine frage: gibt es keinen deutschen händler, bei dem ich dieses shield bestellen kann? falls hier händler mitlesen: vielleicht könnt ihr das produkt in euer sortiment aufnehmen? danke & gruß markus quote from: markusd112 on jun 05, 2013, 12:28 pm der shop macht auf mich aber keinen vertrauenswürdigen eindruck, denn ich finde nirgendwo ein impressum, eine anschrift oder sonst etwas, um zu erfahren, wer denn diesen shop betreibt und bei wem man da bestellt... die "anbieterkennzeichnung" auf der homepage des betreibers ist nur in der eu vorgeschrieben. i...