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Showing posts from August, 2011

Thread: Ubuntu on USB, Windows Server '08 on HDD: Booting NTLDR before GRUB

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hi all, have ubuntu installed on usb flash drive , windows server '08 installed on hard disk. (long story short, win server used development , testing environment, don't hate me using workstation ) when first boot machine loads grub, behavior i'm accustomed , expected. however, because ubuntu (and grub) installed on flash drive, may not present when boot machine. best course of action me able boot windows when flash drive isn't plugged in? should setup window's ntldr prompt choose between booting windows or ubuntu? how should go setting up? i'm aware of setting grub boot windows, i've never had reverse, i'm kinda clueless if best course of action. on top of i've tried stay away toying around grub after several incidents best left forgotten. in advance. instead of installing grub on flash drive, install on internal hard drive. there, make windows default, make menu entry f

How to go about controlling and powering 4 x 120mm PWM Fans

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hey guys, first want apologize lack of knowledge. haven't ever looked building system arduino or similar raspberry pi. working on carpentry project server isolation cabinet. cabinet needs intake , exhaust thought use 4 x 120mm fans. the problem running into: how power 4 fans without computer? trying explore option instead of trying rig larger computer. before posted have done quite bit of reading think ignorance might have me looking in areas either don't understand or software steps vs. actual hardware config. so question: can point tutorials simple minded folks myself . or provide basic information. maybe guesstimate on how long project take , if there alternative options come mind. thank you, kevin edit: stumbled upon tutorial https://www.youtube.com/watch?v=_lccgfsmor4 seems explain software aspect , parts of hardware. can understand how cut off 4 pin fan connector , wire doing in tutorial there way using connectors? how should assemble final build it's not on

LED Alienware type of protective case for pi 3? - Raspberry Pi Forums

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just discovered raspberry pi , can’t wait till arrives...basically no idea how program or anything. have knowledge when when technical college. years , years ago....but expect learn out of little computer. mean while i’m wondering possible have pi sense hat or pimoroni led matrix or led strip lighting attached raspberry pi 3 b has 3.5 lcd display. want clear case pi display screen attached pi inside case, bright colored led lighted alienware pcs need pointed in right direction on things need or possible configurations work if any. awesome have little pi in clear case screen , glowing. while learn other neat things do. help. since screen sits on top of pi3, using kind of led "hat" not ideal. led hat end under screen, blocking direct visibility of leds, , screen sit high inside case. led strip lighting should possible, have adapt suit needs. not recommend using 1 of tiny screens initially. small size , low resolution poor introduction world of pi computers. connect pi3

Guiding Vehicle to Point by camera

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i wanting use camera or other sensor guide vehicle say, red circle, automatically.  not sure called, , having hard time finding information on this. does type of plug , play system exist this?  type of control called? thank help. i'd call "guidance system", "self driving vehicle" or "self driving car". the image processing/analysis not simple , making more difficult fact target becomes larger in image closer. and of course, need know how basic feedback-control systems work. have ever seen pigeon guided missile ?   Arduino Forum > Using Arduino > Project Guidance > Guiding Vehicle to Point by camera arduino

Thread: Problem: USB Drive, mount, permissions, Apache

hi, have ubuntu 9.10 on acer aspire 1 (to play , learn linux). installed apache 2 web server , works fine. however, want able see files on external usb drive. usb drive mounts , correctly @ bootup or pluging in. however, mount permissions have read/execute off group/other default , prevents web server seeing files. i've found several discussions on web related (although year old!) , suggestion create mount in /etc/fstab file includes umask allow others see mount. try error fuseblk access. recommends doing chmod 4755 on ntfs-3g. well, didn't work. ge tanother error saying suid wrong when tries mount. (i verified chmod performed , set sticky bit). questions: 1) best way approach this? i'm single user on laptop. there easier way - example, automount use right umask? 2) ok, if need mess fstab file, ideas on settings? if ask system auto mount used (which works), this: /dev/sdb1 on /media/freeagent drive type fuseblk (rw,nosuid,nod

Coordinates like GIMP?

the thing lacking photoshop ability determine how many pixels apart things are. instance, have guides placed , want drag guy 10px below current one. thing is, have no idea pixel first guide at. can't double click info, can't set information bar in bottom left of image window coordinate system gimp. lot of web development , important feature me. there missing? know can go view->new guide don't feel guessing 30 times point image have happens fall, , add 10 pixels down there. i'm sure there plenty of other ways here one. go info pallete/panel, select flyout menu , edit options. set mouse coordinates 'pixels'. with marquee tool, drag out selection between point , b. info palette display width , height of selection in pixels. if need guide, drag/drop on edge of selection. the info pallete/panel show x/y position when drag guide. More discussions in Photoshop Windows (read only) adobe

I help need to set the time and date with the keypad, using RTC module

hello wanted know how edit rtc time using keyboard code: [select] #include <rtclib.h>  //library: https://github.com/adafruit/rtclib #include <wire.h> #include <keypad.h> #include <liquidcrystal.h>   liquidcrystal lcd(13, 12, 11, 10, 9, 8); //pines del arduino al lcd (rs e d4 d5 d6 d7) //definición de filas y columnas const byte filas = 4; //cuatro filas const byte cols = 4; //cuatro columnas //definición de los pines byte pins_filas[] = {3, 2, 1, 0}; //pines arduino para las filas byte pins_cols[] =  {4, 5, 6, 7}; // pines arduino para las columnas //definición de las teclas char teclas [ filas ][ cols ] = {   {'1','2','3','a'},   {'4','5','6','b'},   {'7','8','9','c'},   {'*','0','#','d'} }; //se crea una instancia llamada teclado1 y el cual asignara las teclas que tenemos en el arreglo "teclas" y le decimos //que

Problème de débutant

bonjours, matos utilisé: -arduino mega2560 - shield audio -led, résistance, bouton... code: code: [select] #include <arduino.h> #include <avr/io.h> #include "config.h" #include "player.h" #include "vs10xx.h" #include <fat16.h> #include <fat16util.h> #include "newsdlib.h" boolean bt1 = 20; boolean led1 = 21; void setup() { initspi();   initioforvs10xx();   initioforkeys();      initioforleds();   //vssinetest();   mp3reset();  serial.begin(9600);    pinmode(bt1, input);  pinmode(led1, output);   if(!initialsdcard()){     serial.println("initialisation sd impossible !");     return;   }   else{   serial.println("initialisation sd ok");   } // test sd card } void loop() {   if(!initialsdcard()){     serial.println("initialisation sd impossible !");     return;   }   else{   serial.println("initialisation sd ok");   } // test sd card   delay(2000);   if(digitalread(20)== high){

CS4 running extremely slow compared to CS3

i installed photoshop extended cs4 64bit. opened 24mb psd file, there text outer glow when move horrible redraw. cs4 feels sluggish compared cs3. system not bad, e6600, 4gb, 8800gts 640, vista home premium x64. anybody have ideas? have updated latest drivers gpu. considering reformat , install. we finding same problem here on 2 different machines, both running xp64 though. 32 bit , 64 bit versions of cs4 running extremely (non gpu mode). was changed augment gpu functionality hurts performance on systems can't run stuff? More discussions in Photoshop Windows (read only) adobe

Question on Arduino Interrupts, rsp Interrupt-sampling

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friends, need enlightenment   : field of action: arduino mega 256, atmel avr, 8bit i intend use very short pulse trigger external interrupt (falling, if makes difference). in fact may theoretically shorter clock-cycle on arduino. datasheet not go in depth how intwhatever detected. rising/falling says detecting state change in between samples . now, ideally may flip-flop, capturing whatsoever (reasonably) short pulse or might port-sample (storing latest sample , applying boolean logic) being limited 1 or more clock-cycles of avr, requiring pulse last minimum of clock-cycles. this important me, want keep circuit simple possible, flip-flop in hardware mean chip (ttl or gal), i'd love avoid. regarding use: i intend implement z80-shield old ones amoungst us, can play nice , speedy real cp/m-toy. thought wiring ioreq directly intwhatever in falling mode. thus, simple i/o-command z80, alert arduino. if had make arduino more sensible, mean implement mono-flop or waste pin rese

help with video component/module - Joomla! Forum - community, help and support

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hello, are there video component or module allows admin upload videos , able categorise videos? hi maybe 1 of these components job http://extensions.joomla.org/component/ ... itemid,35/ http://extensions.joomla.org/component/ ... itemid,35/ http://extensions.joomla.org/component/ ... itemid,35/ Board index Joomla! Older Version Support Joomla! 1.0 General Questions - 1.0.x

Arduino Yun don't create wifi network

hello guys. i'm trying started arduino yun. according tutorials, yun should create wifi network would've connect. doesn't appera. beginner's guide recommends press wlan rst 5 seconds less 30 seconds... nothing happens. try pressing wlan rst more 1 minute, nothing happens. guide says when press wlan rst, wlan led should turn on. never turns on. please? thank much. the arduino official page says nb : in countries, prohibited sell wifi enabled devices without government approval. while waiting proper certification, local distributors disabling wifi functionality. check dealer before purchasing yún if believe may live in such country. if wish disable wifi, run sketch. more information, refer forum post. sent me forum http://forum.arduino.cc/index.php?topic=189105.0 in forum says how disable de wifi, ideas on how enable using code in forum? https://gist.github.com/sgk/6641198#file-patchyun-ino Arduino Forum

Re: RFID problem

hi all, i'm having problem uploading arduino uno rfid-rc522, maybe gets kind of  static or leave on ground while try else , works. when try work rfid again compiler works , when coming uploading part writes uploading , stays way , arduino accepts nothing anymore until left time. the crystal on rfid 27.120 , arduino 16000, reason or what. i'm 1 step way of smashing them both. thanx helping me quote maybe gets kind of  static no. quote the crystal on rfid 27.120 , arduino 16000, reason no. quote when coming uploading part writes uploading , stays way then arduino not working. fact have rfid card attached not relevant problem. you either have:- 1) faulty arduino 2) faulty usb lead 3) faulty install or computer Arduino Forum > Using Arduino > Programming Questions > Re: RFID problem arduino

Thread: Port 17100 3 blocks per seconds

this started happening randomly showing on firestarter several hostnames/ip adresses. help? googled 10 minutes it's blocked, why bother. besides, if not running server listening port, connections rejected if don't have firewall running. in fact, don't need firewall. explain that, there tons of threads subject . please read ubuntu security tutorial. hits ghost packets closed bittorrent connection or that. see these: http://ubuntuforums.org/showthread.php?t=1176946 http://ubuntuforums.org/showthread.php?t=1195242 http://ubuntuforums.org/showthread.php?t=1112089 if want use firewall, aside fact don't need it, purge firestarter, install gufw , forget monitoring hits. waste of time. gufw default firewall manager (which gui ufw, installed default) , firestarter not recommended anymore. lots of threads too. Forum The Ubuntu Foru

Compilation errors: Mega 2560

i'm running windows 10 on pc , have 2 arduino boards: intel 101 , mega 2560. mega comes on com 6 , 101 on com 3. i've verified (needlessly) on device manager | ports (com & lpt). re-installed ide. 1.6.10. i'm getting compilation errors mega when compile blink. getting blink examples (file|examples|basic|blink). seeing expected stuff on tools menu. ide setup mega. when "get board information" popup information, presumably query because board comes serial number. i same 101 board, setting ide 101. compiles , loads expected. i turned off verbose because chatty. appears i'm missing component. here error message copied ide: arduino: 1.6.10 (windows 10), board: "arduino/genuino mega or mega 2560, atmega2560 (mega 2560)" cc1.exe: error: -fno-fat-lto-objects supported linker plugin. exit status 1 error compiling board arduino/genuino mega or mega 2560. this report have more information with "show verbose output during compilation" opt

Launch an App Arduino Wireless???

hello forum! i wondering if possible. when switch or button pressed on arduino, arduino launches app on mac. flip switch on arduino, , mac launches custom automator application - "test01.app" here catch. arduino have launch app, without being connected mac! wireless app launch! how done. (one rule: nothing can plugged computer. straight computer!) any ideas? if can't plug mac relying on wireless systems built it? they? presumably have program running continuously on mac communicating arduino. when receives particular message arduino launches mac program of choice? ...r Arduino Forum > Using Arduino > Project Guidance > Launch an App Arduino Wireless??? arduino

Prank laptop domination!!!!

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hello. i have idea project, might cool, if possible. small handheld arduino device, 1 switch. when switch on, normal. when off... my friend has macbook pro laptop. play small prank on him. when switch on arduino device off, laptop forced off. if friend tries power laptop, not power on. arduino wirelessly keeping laptop off. then, when put switch of arduino in 'on' position, laptop can powered normally. have wireless. and wouldn't have laptop on , off. maybe laptop display "locked" message on screen, , message go away when arduino switch in on position. bluetooth? wifi? ideas? 1 rule: can add files (not apps) on laptop, no digging around inside hardware of laptop. also, no major stuff installed on laptop, please... any ideas cool!  i don't know how interact power switch or of hardware wirelessly.  don't think possible without adding more hardware computer. adding lock screen on other hand might easier if can write program on

Thread: parody movie posters

http://adweek.blogs.com/adfreak/faux...n-germany.html :) pretty professionally done. now, find way 180 gag parody of rocky horror picture show. Forum The Ubuntu Forum Community Ubuntu Community Discussions The Cafe parody movie posters Ubuntu

Simple Image Gallery Plugin thumbnails... - Joomla! Forum - community, help and support

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simple image gallery plug-in : thumbnails not show image ( squares )  have read through  forums , tried setting permissions 755 , contacted host seem have worked others issue -  thinking template using?  any input appreciated why unable view thumbnails - new joomla! , trying put children's art gallery 1 can upload images , share creative art - started criticism (constructive) appreciated missed simple. thanks again http://www.funkamentals.com tahoestyle wrote: ??? simple image gallery plug-in : thumbnails not show image ( squares )  have read through  forums , tried setting permissions 755 , contacted host seem have worked others issue -  thinking template using?  any input appreciated why unable view thumbnails - new joomla! , trying put children's art gallery 1 can upload images , share creative art - started criticism (constructive) appreciated missed simple. thanks again http://www.funkamentals.com hi, i'm having same problem, strange thing installed simple image g

please halp me with my codes!...

i have working code arduino , want load of 1 button (start-stop) // setup function runs once when press reset or power board void setup() {     // initialize digital pin 9 output.   pinmode(9, output);   pinmode(8, output);   pinmode(7, output);   pinmode(6, output);   pinmode(5, output);   digitalwrite(9, high);   // turn led on (high voltage level)   delay(1000);              // wait second      digitalwrite(6, high);   // turn led on (high voltage level)   delay(3000);              // wait second    digitalwrite(8, high);   // turn led on (high voltage level)   delay(1000);              // wait second        digitalwrite(7, high);   // turn led on (high voltage level)   delay(1000);              // wait second       digitalwrite(6, low);    // turn led off making voltage low   delay(1000);              // wait second   digitalwrite(9, low);    // turn led off making voltage low   delay(1000);              // wait second      digitalwrite(5, high);(delay(1000)) ; digitalwri

call script from tkinter - Raspberry Pi Forums

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pretty new this, trying call script button in tkinter import tkinter tk import subprocess sub window_size = "600x400" root = tk.tk() root.geometry(window_size) tk.button(root, text="create motion!", command=lambda: sub.call('home/pi/motion1.py')).pack() getting error >>> exception in tkinter callback traceback (most recent call last): file "/usr/lib/python3.5/idlelib/run.py", line 125, in main seq, request = rpc.request_queue.get(block=true, timeout=0.05) file "/usr/lib/python3.5/queue.py", line 172, in get raise empty queue.empty during handling of above exception, exception occurred: traceback (most recent call last): file "/usr/lib/python3.5/tkinter/__init__.py", line 1562, in __call__ return self.func(*args) file "/home/pi/animationgui.py", line 11, in <lambda> tk.button(root, text="create motion!", command=lambda: sub.call('home/pi

Vraag over power off - Raspberry Pi Forums

onlangs heb ik deze schakeling gebouwd : http://www.mosaic-industries.com/embedd ... controller de controller die werkt, echter heb ik nog geen voorbeeld python scriptje gevonden die daadwerkelijk gpio4 weer laag zet waardoor de voeding ook daadwerkelijk uitgaat. misschien dat een van jullie ervaring heeft met deze schakeling en mij verder kan helpen. ik heb de wens dat deze schakeling idd gaat werken... en de pi dan ook echt uitgaat. ik ben benieuwd naar jullie reacties... grt, frans je link te lang en werkt niet. shutdown de rpi zie http://www.instructables.com/id/simple- ... wn-button/ raspberrypi

Interrupt communication

hello guys! i performing communication between 3 nodes, (1) tx continuously transmitting data ack on, (2) rx continuously receiving data 1 ack on , transfering same data 3 when requested through interrupt, (3) master requests transfer of data 2 through interrupt. every 10 ms master set pin 2 of rx high causing interrupt. node rx send data master. the problem here system not working. :p in point of view seems interrupt long, because if reduce loop size, 20, 19 works. in other words, data in master if reduce loop size. bellow can find code of rx. master requesting transfer , tx transmitting data. what happening can't make work larger loop size? hope clear enough... btw, using 4 lsb portc 0-3 , 4msb portd 4-7. code: [select] /*   jul 2016 - communication module #include <spi.h> #include <spritzcipher.h> #include "rf24.h" #include "nrf24l01.h" #include "3ccar.h" #include "digitalio.h" /******************

Can't Reinstall Photoshop CS3

i on leopard 10.5.2. had photoshop ps3 trial edition, expired. got full cs3 web premium, , when installed said photoshop installed. when went license it, said license code invalid. trashed photoshop folder /applications, emptied trash , restarted installer try reinstalling dvd. but realize there *uninstaller* apparently should have used. i stuck right in situation installer says photoshop installed, can't reinstall it, since trashed it, won't let me uninstall either. anybody have suggestions? sigh. look cs3clean script on adobe site, download , run it. More discussions in Photoshop Macintosh (read only) adobe

Bekomme den BMP 180 nicht eingebunden im Weather Undeground

habe eine wetterstation aufgebaut. mit dht22, bmp 180, windssensor, regensensor. Über thinkspeak bekomme ich alle sachen angezeigt. jedoch finde ich das weather underground besser in den einzelheiten. aber sobald ich den bmp180 einbinde, wird der zwar im seriellen monitor korrekt angezeigt, jedoch auf der homepage des weather ground fehlen dann alle anderen daten, wie temperatur, feuchtigkeit usw. woran könnte das liegen. code: [select] #include <esp8266wifi.h> #include "dht.h"  #include <adafruit_bmp085.h> //barometer adafruit_bmp085 bmp; // bmp pressure sensor #define dhtpin          2   //pin attach dht #define dhttype dht22       //type of dth  const char* ssid     = "fri"; const char* password = "re"; const int sleeptimes = 600; //18000 half hour, 300 5 minutes etc.                                 ///////////////weather//////////////////////// char server [] = "weatherstation.wunderground.com";  char webpage [] = "

Nano + PIR + motor reaction ( nema 17 )

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hello, can nano handle these 3 items + power needs ? 2x nema 12v 0.4a 26ncm(37oz.in) 17hs13-0404s pir : http://www.befr.ebay.be/itm/172244753567 or need external power supply ? this first arduino project i launch pre-configured motor mooves when detecting presence. in smallest format possible. yes, need external power. need 2 motor control chips; 1 each motor.  pololu has nice ones. Arduino Forum > Using Arduino > Project Guidance > Nano + PIR + motor reaction ( nema 17 ) arduino

U8glib - How to display leading zeroes?

hi, i'm using oled display u8glib. let's have variable defined float x = 3.52; i want display number on oled display 1 leading zero, how can u8glib? i mean display number should this: "03.52" can give me hint, please? thank you! code: [select] if (val < 10) lcd.print('0'); lcd.print(val); Arduino Forum > Using Arduino > Displays > U8glib - How to display leading zeroes? arduino

[SOLUCIONADO] Encender y apagar LÁSER

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hola todos, soy nuevo en esto de arduino. estoy montando un sistema con un arduino uno. dos señales digitales mueven dos servos, hasta ahí todo ok. mi problema viene al conectar un laser de 1 mw otra señal digital para encenderlo y apagarlo con high y low. el laser funciona pero una intensidad muy muy baja. si conecto el láser al puerto de 5v o 3.3v se enciende con la intensidad correcta pero no puedo apagarlo y encenderlo. ¿cómo puedo tener el contro del láser funcionando su intensidad correcta? saludos y gracias de antemano. cual es la intensidad correcta? el pin de arduino que estas usando no puede entregar mas de 40ma. si eso no es suficiente necesitas un transistor, sea tbj o mosfet. yo te recomiendo un mosfet como el 2n7000 que puede entregar hasta 1a en picos cortos que es apropiado para un caso como el que planteas. la resistencia dice 470 ohms y eso garantiza poca corriente asi que el valor de la r dependerá de la corriente que tu pretendes que c

ACKalexandre

hello friends canal new arduino i'm developing project , difficult even, ir control using 2 of same 1 buttons move , down another, 2 manual buttons @ same arduino objective 5 leds light 1 @ time in sequence button , 1 down. please me. #include <irremote.h> int recv_pin = 11; int pin1 = 10; int pin2 = 9; int pin3 = 8; int pin4 = 7; int pin5 = 6; int fase; int estadobotao; irrecv irrecv(recv_pin); decode_results results; void setup() {   // put setup code here, run once:   serial.begin(9600);   irrecv.enableirin();    pinmode(pin1, output);    pinmode(pin2, output);    pinmode(pin3, output);     pinmode(pin4, output);      pinmode(pin5, output);          pinmode(recv_pin, input);     fase = 1; } void loop() {   // put main code here, run repeatedly:   if (irrecv.decode(&results)) {     serial.println(results.value, hex);     if(results.value = 0x20df40bf){       irrecv.resume();     }   estadobotao = digitalread(recv_pin);     if (estadobotao == high) {         if

step motor decoupling

i have 2 28byj-48 stepper motors sinking same uln2003 chip (same pins). when set delay time between 2 steps 2mili seconds, both steppers rotate , great. when set delay time between 2 stops 1mili second, both steppers rotate. if stop 1 of them fingers makes second 1 stop. i assume caused interference in coils, can 1 elaborate on electrical level happening ? how solve , decouple them ? (i want control both same 4 arduino pins. maybe using 2 uln2003 solve ?) thanks. try sticking 1000uf across supply @ uln2803, may overloading the pins , voltage second motor drops much. if had uln2803 you'd have 8 channels wouldn't need share pins. Arduino Forum > Using Arduino > Motors, Mechanics, and Power (Moderator: fabioc84) > step motor decoupling arduino

Controlador de FP com arduino e CS5463

boa tarde, estou trabalhando em um tcc usando o ci cs5463 para medir o fator de potência e outras grandezas também, minha ideia é desenvolver um controlador de fp que acione bancos de capacitores, mas que seja um projeto aberto que possa ser montado facilmente, tendo em vista que os controladores comerciais são caríssimos. já montei o circuito com o cs e agora estou partindo para comunicação spi com o arduino, preciso escrever em alguns registradores cs e também ler alguns. já li bastante coisa na internet sobre spi e estou estudando o exemplo de código que vem na ide arduino mas ainda está um pouco difícil de entender sintaxe código. se alguém puder me dar uma ajuda ou sugerir algum material para eu estudar agradeceria bastante. informações ci https://www.cirrus.com/en/products/pro/detail/p1092.html alan, tenho interesse em te ajudar nessa fase. vamos trocando uma ideia por email: tsfurlan @ gmail . com abraço Arduino For

Robot tagliaerba

ciao tutti. finalmente è finita la maturità e ho smontato il mio progetto. e ora si riparte costruire! allora, quello che vorrei fare è un robot automatico per tagliare l'erba di casa. sensori per il movimento del robot li ho e già come utilizzarli. anche per tagliare l'erba ho trovato un motorino che alimentato con una lipo da 7.4v riesce rasare.... il problema è movimentare il robot. quello che ho disposizione sono due motorini dotati di motoriduttore, perfetti per farlo muovere insomma. il problema però è come pilotarli. siccome ho in giro un po' di relè adatti per arduino, secondo voi viene un bel lavoro invertire sensi di marcia ecc con dei relè? ogni relè presenta un contatto no e uno nc. quanti relè mi servirebbero secondo voi per pilotare e far girare il mio robot con 2 ruote motrici?(io pensavo 1 relè per ogni senso di marcia, quindi un totale di 4, ma forse si può con meno....) grazie. quote io pensavo 1 relè per ogni senso di marcia

LDR in a dimmer circuit? Need advice

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hello, have several questions. possible use ldr in led dimmer circuit? idea ultrasonic sensor senses person , because senses person, light goes in brightness 25% or 50%, , after maybe minute or two, if sensor still detects person within range, brightness goes hundred percent? know potentiometer common in dimmer circuits i'm looking automatically changes brightness level. and also, possible use smartphone los controller (or imagine remote controller) , detected color sensor? thank , have day i don't understand ldr come it. can achieved without one. what sort of lights, mains incandescent or leds? what los controller? please read how use forum sticky post information on how ask question here. Arduino Forum > Using Arduino > LEDs and Multiplexing > LDR in a dimmer circuit? Need advice arduino

Thread: iBus Loads, But Has Prediction and Selection Problems

hi everyone, have 2 issues ibus. first though loads chinese, there no character prediction. if type multi-character phrase, starts selection process after each character, not phrase. makes incredibly slow , tedious type real sentences, point of unusable. (in japanese spacebar not select kanji--i can type hiragana. proper japanese support not crucial, though, thought might related.) second, after selecting ibus language settings under administratio , restarting, no longer see ibus dialog on system. if hit ctrl+space (my hotkey) can begin typing chinese, there's no visual notification ibus running , no way change languages. can live this, though--i can't live without typing chinese. appreciate can this! need use chinese , ever since karmic i've had run windows (can't scim working anymore either--i'd pleased if solution scim working, or other program), has own set of problems. thanks! bum

dilemma motore pololu

il mio robot due ruote (bilanciante... ehm) ha un problema che ne preclude l'equilibrio: con ruote più piccole non ero in grado di vedere che una ruota è frenata e l'altra gira libera, tanto più che la ruota frenata girando accende il led rosso o verde della motor driver (pololu vnh3sp30) mentre l'altra non accende proprio nulla! a causa di questo il robot si inclina sempre di più fino cadere... a robot spento una ruota è in rotazione libera, ma l'altra è frenata : come è possibile? a robot acceso, quest'ultimo tende ruotare sulla ruota non frenata. sto sbagliando livello hardware o software: come posso fare un test? come faccio capire se il motore è rotto ? mi date una dritta? sono convinto che sia questo il problema! https://www.youtube.com/watch?v=f298xucqvci quote a robot spento una ruota è in rotazione libera, ma l'altra è frenata : come è possibile? motore / ingranaggio rotto? ruota non fissato sul albero motore? ciao uwe

Image Layup Question

i'm working on project , use advice. i'm shooting multiple shots of same scene, lots of people moving though shot. i'd take shots , combine them (ie. keep background, , have people came through shot included, or layered on background), give impression of many more people there were. i'm not keen on masking every person in every shot (there 100 shots of same location)...is there way automate process in photoshop? suggestions on best method? , help. always mention version of photoshop you're using, please. More discussions in Photoshop Macintosh (read only) adobe

A current/voltage question: driving three DC underwater motors via Pi - Raspberry Pi Forums

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img_2143.jpg (132.05 kib) viewed 282 times hello pi gurus, team acquired 2 sizable water tanks use in upcoming europa exploration exhibit @ space foundation discovery center . i'm helping build pi controller, controlling underwater drone team building using nes-style usb controller , node.js. controller part working fine, don't know way when comes electricity. fry pi if run following? option 1: control 3 dc motors using pi motor controller hat motor hat 5-12 volts external power , max 5 amps current: https://www.adafruit.com/product/2348 t100 motor 6-12 volts, max 12.5 amps current : http://docs.bluerobotics.com/thrusters/ ... ifications found nodejs code control motor hat at: https://www.npmjs.com/package/motor-hat (yay!) motor hat max out if controlling 3 motors? i'm concerned max current of hat vs single motor (and we're controlling three). option 2: control 3 motor escs (electronic speed converter

Thread: amd64 clean install of 9.10 (wipe disk) ?

i want erase/wipe ubuntu 64 bit computer, , fresh install of ubuntu 9.10 can please point me in right direction ? oygle boot livecd , run gparted reformat or repartition , reformat drive. boot cd , install ask/give choice of doing same (reformatting partition has current os on it) part of installation process. data not want lose. Forum The Ubuntu Forum Community Ubuntu Official Flavours Support Installation & Upgrades [SOLVED] amd64 clean install of 9.10 (wipe disk) ? Ubuntu

remotely installing new noobs - Raspberry Pi Forums

i remotely controlling raspi using vnc , see still using jessie. there (simple, preferably) way can upgrade same os in latest noobs without visiting site, please? while could: code: select all sudo apt update sudo apt dist-upgrade against idea, if there goes wrong, may end in losting connection server. if no 1 visit physical location, don't touch network config. colocation provider used have service ask them re-flash sd card. maybe ask yours flash new card you. raspberrypi

HC-12 for controlling switches

hi every one. can used hc-12 module remotely controlled 16 switches? thanks i tried sample net , works fine switches only. when extend 3 16 switches,, gives me intermittent problem.. turn on switch , not.. wander if there alternative use other module other hc-12. thanks code: [select] // transmitt side #include <softwareserial.h> softwareserial myserial(2, 3); //rx, tx int buttonpin = 8; boolean onoff = 0; void setup() {   pinmode(buttonpin, input);   myserial.begin(9600); } void loop() {     int buttonstate = digitalread(buttonpin);     if(buttonstate == 1){//if button down     myserial.println(1111);//send unique code receiver turn on. in case 1111     onoff = 1;//set boolean 1   }   if(buttonstate == 0 && onoff == 1){//verifier send off signal once     myserial.println(0000);//send unique code receiver turn off. in case 0000   }   delay(20);//delay little better serial communication } code: [select] // receiver's side #include <sof