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Showing posts from February, 2013

Creating a device to measure activity levels of slow-walking people

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hi, i wondering if advice start creating device measure activity levels of slow-walking people. i use arduino microcontroller along triaxial accelerometer (+/- 2 g good, pretty high precision because need measure slow walking accelerations accurately). in addition, have external memory (such sd card) , wireless transmission of data can transmit raw accelerations pc. looking add in gyrosensor sense incline of lower/upper limb , gps track location. finally, add in lcd display display relevant information user. so far, i've heard using xbee wireless transmission of data, don't know else. i've programmed different microcontroller before in c along lcd display, think learning program arduino pretty simple. any ideas on kinds of components should using interface arduino microcontroller? also, thinking of getting 2 microcontrollers, 1 capable (i'm not sure whether choose uno or mega or else) , 1 miniature , size limb sensor (maybe nano). choices? i've read bi...

Thread: Ubuntu doesnt Hibernate

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yesterday installed latest version of ubuntu (9.04) on laptop , instead of shutting down more comfortable laptop hibernating when click "hibernate" sends me screen saver without turning laptop off. why? please , need on , remember same "suspend" Forum The Ubuntu Forum Community Ubuntu Official Flavours Support General Help [SOLVED] Ubuntu doesnt Hibernate Ubuntu

Problem Driving UART0 In Combination With The ACT LED - Raspberry Pi Forums

hello. have modified program based on bakingpi ok03 code add sending of character through uart0 each time act led switched on or switched off. issue have order of accessing gpio i/o pin led , accessing uart0 seems important (which not expectation). have attached source main loop. supplied, flashes act led , sends '121212...' uart (which can see in putty). seems fine. if uncomment lines mentioned in source, led switched on , '1' set uart0; led switched off , '2' sent uart0 - , that's it. no more flashing , seemingly no more characters sent uart0 (nothing shown in putty). using data memory barriers on entry , exit setgpiofunction, inituart0, putchar , setgpio, wit: mcr p15, 0, ip, c7, c10, 5 (my knowledge of dmbs sketchy @ best.) have suggestions might going on? regards nick code: select all .section .text main: mov sp, #0x8000 pinnum .req r0 pinfunc .req r1 ...

String to int

hi, found code snipet converting string int, works great numbers 5 digits after fails. the code below work if change viewcount "123456" int become negative number. any ideas? thanks. phil code: [select] viewcount="12345"; char this_char[viewcount.length() + 1]; viewcount.tochararray(this_char, sizeof(this_char)); int newcount = atoi(this_char); serial.println(newcount); maybe because int goes 32767. try using long variable , corresponding atol function. Arduino Forum > Using Arduino > Programming Questions > String to int arduino

joomfish errors on first use... - Joomla! Forum - community, help and support

i installed component without errors, i added english language along greek , published component. when chose greek translation works fine but when choose english transaltions following errors code: select all warning: main(language/english.php): failed open stream: no such file or directory in /home/makis/public_html/upwind/site/index.php on line 135 warning: main(): failed opening 'language/english.php' inclusion (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/makis/public_html/upwind/site/index.php on line 135 warning: cannot modify header information - headers sent (output started @ /home/makis/public_html/upwind/site/index.php:135) in /home/makis/public_html/upwind/site/index.php on line 224 warning: cannot modify header information - headers sent (output started @ /home/makis/public_html/upwind/site/index.php:135) in /home/makis/public_html/upwind/site/index.php on line 225 warning: cannot modify header information - headers sent (output started @ /home...

Thread: Is this really an Evolution Error?

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32 bit ubuntu 9.04 poll several accounts no problems except gmail. gmail account default account. evolution has been running fine seems forever. then, few days ago, stopped getting email (pop) gmail. however, can still send (smtp) through gmail fine. can see, settings correct both in evolution , @ gmail. every time poll mail via evolution, evolution asks me re-enter pop.gmail.com password, after still not me email. when asks password says: unable connect pop server pop.gmail.com. error sending password (my email address) on host pop.gmail.com server. -err bad command b39pf4521285rvf.7 and, every in tandem above error, notice evolution: evolution error: error while performing operation. rcpt <my email address> failed. <my email address>: relay access denied. evolution messing or isp or gmail causing problem? , know how rectify it? thanks! hold phone! have discovered proble...

Remote Radiation Monitoring - solar powered

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i thought i'd share details of project since it's been running fine several months now. there 2 versions - 1 uses rfm22b transceiver (433khz), , uses nrf24l01+ (2.4ghz). the solar stuff off shelf adafruit parts , it's working great. the geiger part can pretty open geiger or can replaced other sensors. build information , sketches here . john why radiation? Arduino Forum > Community > Exhibition / Gallery > Remote Radiation Monitoring - solar powered arduino

Welches Relai?

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hallo zusammen, ich bin auf der suche nach dem passenden relai für eine schaltung, aber immer der reihe nach... ausgangslage: - board für die ansteuerung des relais (max. 5v und 50ma) - usb-lampe die 'angeschaltet' werden soll (max. 5v und max. 50ma) so, nun hab ich versucht die lampe direkt board anzuschließen und es hat natürlich nicht richtig funktioniert. wen wundert es, die lampe zieht einfach zu viel strom. nun habe ich gelesen, dass man das mit einem relai realisieren kann. zumindest habe ich das verstanden wie ich mir das gedacht habe? so: - 2 usb-kabel zum pc - 1. kabel steuert board und somit relai - 2. kabel versorgt die usb-lampe (dort soll eine leitung durch das relai geschaltet werden) und nun die fragen aller fragen: könnt ihr mir ein relai nennen, dass besten der conrad hat und dafür geeignet ist? bin schon soweit, dass es für gleichstrom (dc) sein muss gruß max nix relais für eine simple anwendung. ein einfache transistor mit ca ...

Finally made a glowing candle :) (RGB one!) (With Video?) (now with code! LOL) :

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http://www.youtube.com/watch?v=mun7mhpecdo and had 1 issue code start finish - getting used c/c++ thingy now... still wish had pascal compiler though lol theoretically, pascal possible using gnu pascal. Arduino Forum > Using Arduino > Project Guidance > Finally made a glowing candle :) (RGB one!) (With Video?) (now with code! LOL) : arduino

Sketch slowing down... General noob proggie questions

hey all, i'm noob, , on 3rd version of project. keeps getting better, guess getting hang of it  ;-)  building "analog" clock, pendulum... i'm working dream pixels (self-contained rgb led & lpd6803 controller, on string), 72 pixels long.  thanks moderator's coaxing,  i've rebuilt of code speed things pendulum. as develop sketch further, it's starting bog down under long 'if' statements. i have ton of these 'if' statements, , add more gets slower - - more expected. what doing wrong? should stuff gets done under true "if" conditions turned separate functions? i did consider trying construct array, , doing calcs array, realized doing that, strip.setpixel(x,x,x,x), , i'd have not same calculations, have take more time transfer array array set in library. i know code bit messy, , possibly over-commented (is there such thing?) i'm still learning. trimmed out stuff code, keep simper here...

Errorless login - Joomla! Forum - community, help and support

suddenly cannot login site superadmin. no error shown, after entering username/password page on refresh. nothing else. same on front , back-end. can check see what's wrong? cause page refresh , not login? search? using joomla 1.0.8. thank you bostjan djlongy wrote: suddenly cannot login site superadmin. no error shown, after entering username/password page on refresh. nothing else. same on front , back-end. can check see what's wrong? cause page refresh , not login? search? using joomla 1.0.8. thank you bostjan i have same problem ! did find solution ? Board index Joomla! Older Version Support Joomla! 1.0 General Questions - 1.0.x

usb host shield, usb keyboard input...hexadecimal?

howdy. thank time. http://www.circuitsathome.com/mcu/hid-support-for-usb-host-shield-library-2-0-released i using oleg's usb host shield library , sparkfun usb host shield read usb keyboard. i running , modifying oleg's keyboard sketch (linked @ below) print appears hexadecimal values. here's example of oleg's output: code: [select] 00001a0000000000 dn      >1a< ascii: w 0000000000000000 up      >1a< 0000080000000000 dn      >08< ascii: e 0000000000000000 up      >08< 00000b0000000000 i'm not interested in ascii characters. what want have arduino interpret keyboard array of 89 tact switches, each of send own midi note (except couple, modifiers). means must learn how use hexadecimal values printed. i have ever coded "regular ol numbers" , never hexadecimal...i use tim twillman's midi library (does hard part). is there way me cut corner , include sneaky lin...

Simple Flickr Badge Module - Joomla! Forum - community, help and support

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i've uploaded simple module display flickr html badge. when went looking 1 of these found few reason i couldn't them work. it's available here: http://www.daltonr.com/index.php?option ... tcat&cat=2 it's free (obviously) , don't require registration on site. i have module display flickr flash module too.  i'll upload once i've tidied it bit. -rd thanks that, looking one! david. magicmarker wrote: i've uploaded simple module display flickr html badge. when went looking 1 of these found few reason i couldn't them work. it's available here: http://www.daltonr.com/index.php?option ... tcat&cat=2 it's free (obviously) , don't require registration on site. i have module display flickr flash module too.  i'll upload once i've tidied it bit. -rd Board index Joomla! Older Version Support Joomla! 1.0 Extensions - 1.0.x Modules ...

Anyone Wanting to Try Rasberry Pi ?

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no it's not sex act (i hope)...  it's arm processor on board (like arduino board) except comes usb, hdmi, gpu etc.. phone without screen real world connectors see on computers, plug keyboard , mouse it... (without going shock on questions this... http://www.raspberrypi.org/forum/general-discussion/worthwhile-me-buying-a-pi-want-to-learn-a-language-for-running-calculations#p64804 ) what's peoples opinions? flop or possible success?.. of course $25 700mhz arm processor , gpu i'm going buy 1 out of curiosity, who've not heard of it, have @ this, clam they're pushing @ kids them interested in programming again, don't see how personally,  want write 1 extremely low cost low powered web server 256 meg of ram, can't quite imagine atmega putting of fight.. of course not replacement, beauty of arduino board header pins interface real world... forget it, nobody's taking arduino's away me never!!!!.... http://www.raspberrypi.org...

Moteur de recherche Francophone

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bonjour à tous les arduinistes ^_^ depuis quelques temps, je constate des sujets récurrents qui reviennent très souvent et qui ont déjà été résolu un nombre incalculable de fois. c'est énervant  Ã  la fois pour les membres qui se retrouvent à répéter toujours la même chose, mais aussi pour les modérateurs qui doivent gérer une charge de travail supplémentaire. je vous invite donc dans un premier temps à faire une recherche avant de poster un nouveau topic. pour exécuter une recherche sur un des sous forums de la partie francophone, je vous ai réalisé un formulaire spécialisé, on ne peut plus simple à utiliser : formulaire de recherche pour la partie francophone uniquement (désolé pour le côté un peu "cru", je ne suis pas un développeur web ) remarque importante : depuis mai 2013 il semblerait qu'il soit tout simplement impossible de faire une recherche sur un des sous-forums de la partie francophone avec le formulaire de recherche officiel. ce formulair...

Thread: learning as you go?

i'm new ubuntu , till i've used website search , google solution several different problems. thing is; i've been able follow guides find , working. far have feeling i've been doing , not understanding i'm doing. did buy ubuntu linux bible starting read. ways can learn understand i'm doing when i'm following guides? example: http://ubuntuforums.org/showpost.php...90&postcount=9 understand basic things sudo command , other basic terminal commands, library stuff , addons etc have hard time understanding mean , why need them there. question understandable if not let me know , i'll try explain better. the best thing can go through guides following, set step, looking commands used. once understanding of happening, can @ why it's happening. again, leads more googling. know that's not great deal of help, it's how (and of folks on here) learn things. link provided ...

Symbole aus dem ASCII-Zeichensatz auf LCD

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hallo, ich wollte einmal fragen, wie man bspw. ein grad-zeichen (°) auf einem lcd sichtbar machen kann? ich weiß schon, wie man selbst erstellte symbole implementiert, aber davon stehen einem ja nur 4 zu verfügung. danke für eure antworten! viele grüße probiers mal mit lcd.write(), habe ich mal in diesem thread einen vollen block aufs lcd gezaubert: lcd.write(255); das gradzeichen sollte die nummer 253 im hd44780-zeichensatz haben. Arduino Forum > International > Deutsch (Moderator: uwefed) > Symbole aus dem ASCII-Zeichensatz auf LCD arduino

RGB strip and ULN2003

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on forums here found following scheme: i have rgb led strip, led type smd5050, 12vdc, 1.5a per 5 meter. i want control 2.5 meters of strip arduino. the scheme above shows how connect 12v power source , uln2003 transistor. but how able mix multiple colors, red(0-255), green(0-255), blue (0-255). i guess rgb pins of strip need kind of voltage, produce multiple colors instead of mixing red, green , blue. analogwrite Arduino Forum > Using Arduino > LEDs and Multiplexing > RGB strip and ULN2003 arduino

Getting People to Wash Their Hands More!

for our school project, want people wash hands more after having used bathroom. we attempting use break beam sensors , polaroid electrostatic transducer detect movement of user. when not wash hands, sound triggered humiliate them , make an awkward situation. our setup: arduino uno, light sensor, speakers, polaroid electrostatic transducer, bicycle reflector, laser pointers. our strategy: setting 2 laser pointers separating sinks(to detect 1way direction) , toilets , proximity sensor around sink.                    once comes out of toilet, break beams first triggered, proximity sensor if he/she                    uses sink. but, if break beams triggered , not proximity, sound actuated. we new arduino , don't know how set specificities, code. if can out or provide better way go this, appreciate it. thanks! interesting project. not dampen enthusiasm, if f...

Thread: getfsstat not working in ubuntu(but works in other os)

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hello... new one: code works in freebsd, solaris, mac os x , rhel linux. on page http://manpages.ubuntu.com/manpages/....2freebsd.html getfsstat standard c library. researched bit , turns out should work in ubuntu. important project working on getfsstat work properly, , think problem example run fact somewhere ubuntu can't find, or lacks proper library. thank you. code: #include <sys/param.h> #include <sys/mount.h> #include <errno.h> #include <stdio.h> #include <stdlib.h> #define max_fs 128 void print_mounted_fs(void) { struct statfs buf[max_fs]; int fs_count; int i; fs_count = getfsstat(null, 0, mnt_nowait); if (fs_count == -1) { fprintf(stderr, "error: %d\n", errno); exit(1); } printf("%d file systems found.", fs_count); getfsstat(buf, fs_count * sizeof(buf[0]), mnt...

define size of array in constructor

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hi, i want make library 1 of sketches (dycoled). works fine now, have problem. quote #include  "dycoled_t.h" /* dycoled library, designed for usi inferface  on atmega85.  */ // will be set in constucor (?) const  int ledcount = 3; //... // custom array which holds the color information dycoled_t dycoled[ledcount]; // word array for the messages for the leds byte ledmessagemsb_a[ledcount]; byte ledmessagelsb_a[ledcount]; // check if leds are already initialized boolean isinit = 0; //.......... at moment use constant ledcount set size of arrays , loops in functions. when change it, works pretty good. here comes problem library. the size of arrays should dynamic, therefore lib should count of used leds in init method. late change size of array. example (not in code): code: [selec...

arduino+vb6

hi! can me please in right coding arduino , vb6...i find hard in communicating 2 devices arduino , vb6. here code: for arduino: code: [select] void setup() {                  pinmode(9, output);   pinmode(10, output);   pinmode(11, output);   pinmode(12, output);   pinmode(2, input);   pinmode(3, input);   pinmode(4, input);   pinmode(5, input);   pinmode(7, output);   serial.begin (9600); } void loop() {   int = digitalread (2);   int b = digitalread (3);   int c = digitalread (4);   int d = digitalread (5);   //digitalwrite (7,low);   {     if (a == high)     {       digitalwrite (9, high);       serial.println ("red color of led/ pressures value 20psi");       delay (200);       digitalwrite (7, high);       delay (400);       digitalwrit...

Thread: Wireless setting up?

new ubuntu today .... - have installed ubuntu on laptop & have belkin g+ f5d7011uk notebook card ... work windows 2000 or xp? need notecard / usb supported linux i solved problem, file bcmwl5.inf came installatiobn cd belkin worked ndiswrapper , fc2, looking @ http://home.nc.rr.com/thehinnants/stuff/drivers/ (the zip-fil) found file bcmwl5.inf differed previos (old/wrong) md5sum: old/wrong worked me using fc2 b19da13eeba8333fe7f43761e9f6078d bcmwl5.inf 52d67c5465c01913b03b7daca0cc4077 bcmwl5.sys md5sum: ones worked me using kubuntu 6.10 02e93649508d68e60c4919fda92c2273 bcmwl5.inf ebf36d658d0da5b1ea667fa403919c26 bcmwl5.sys installation simple , described at http://ubuntuforums.org/showthread.php?t=201902 hope understand these issues wireless cards linux, structures up, , makes more transparent , easy use. Forum The Ubuntu Forum Community ...

Python and Tkinter Widget pseudo LED creation - Raspberry Pi Forums

i'm new have managed create tkinter/python program can use buttons , check buttons control gpio output lines such turning them on/off in groups , individually. know little classes , modules/function basics of both python , tkinter.(having worked through excellent tutorials 'learn python hard way' (zed shaw) , thinking in tkinter.(stephen ferg)) having few problems around getting screen widget display status of gpio input line. have tried use canvas widget create circular pseudo led can use fill property colour it's centre either red or green depending on status of input. seems sort of work...once when first run program. if run program switch in 2 positions appears filled either red or green depending on switch position when first run program not update. think may event binding. have noticed tkinter buttons , check buttons can use command binding event binding , have used successfully.(and variable checkbutton) know how bind led fill gpio status. have tried wrap...

PLLD clock multiplier - Raspberry Pi Forums

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was wondering if shed light on how plld clock generated in pi? specifically, multiplier used generate 500mhz plld clock 19.2mhz crystal reference? wsprrypi sourcecode assumes generated using 26x multiplier meaning plld clock 499.2 mhz , not 500mhz... correct? james voltron6000 wrote: was wondering if shed light on how plld clock generated in pi? specifically, multiplier used generate 500mhz plld clock 19.2mhz crystal reference? wsprrypi sourcecode assumes generated using 26x multiplier meaning plld clock 499.2 mhz , not 500mhz... correct? james interested, measured both 19.2mhz crystal output , 500mhz pll output precision frequency counter. ratio between 2 frequencies 26.0416667 meaning plld multiplier in wsprrypi source code incorrect. still don't know actual ratio programmed hardware divider though... james raspberrypi

Thread: Free Download Manager

hello. want install fdm on wine. should special before(after)? or, install it? thanks. i installed it. ok during installation , free download manager added applications->wine->programs->free download manager->free download manager. but, nothing happens when click it! restarted computer , tried again , nothing happened again! can do? Forum The Ubuntu Forum Community Ubuntu Specialised Support Wine Free Download Manager Ubuntu

Toegang geweigerd??? - Joomla! Forum - community, help and support

ik krijg steeds de volgende foutmelding. toegang geweigerd regel 4 teken 40693 url http://www.xxxx.nl/mambo/administrator/index2.php deze melding krijg ik alleen als ik bijv een new content wil aanmaken of een nieuwe contact catergory. ik ben ingelogd als admin, dus ik begrijp deze melding niet check es of je in de configuration.php de $mosconfig_live_site goed staat. dat het, hetzelfde als je url van de site. en anders herinstalleer, ben je er vaak wel vanaf. Board index Joomla! International Language Support International Zone Dutch Forum Algemene vragen

social networking web tools - Joomla! Forum - community, help and support

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hi fellow non-profit web people! i researching "social networking" software non-profit client couple hundred thousand members. doesn't need designed around non-profits - myspace ... joomla developer , love joomla open anything. need find working definitions of social networking software is. does have recommendations?  i still don't know want exactly. Board index Joomla! Official Sites & Infrastructure Sites & Infrastructure - Feedback/Information Archived Boards - All boards closed Non-Profit Organizations and Joomla!

How do I access my external usb harddrive from my user acct - Raspberry Pi Forums

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hi name ben. totally new raspberry pi. have had thing week , still trying handle on basics. have 3 young children, , thought idea set separate user accounts of us. gave myself access groups listed under pi user. gave kids access sudo time being. tried logging in personal account , successful. however, did not have permission access external usb seagate hard drive. have no problem getting user pi. there permission setting missing somewhere? please use noob friendly descriptions, not @ tech speech yet. in addition, have been having trouble keyboard. in rasbi-config menu raspbian wheezy, there no menu entry keyboard configuration. able use keyboard, when in linux shell, many of keys off. | coming ~, , \ coming #. makes impossible many commands. able use linux shell terminal in desktop environment. every key works there fine. has run similar situation? thank in advance help. love little computer, frustrate hell out of me sometimes. hi there, welcome forum. know mean frustration, ha...

Cooling Fan RPM Sensing

i'm using pwm on brushless cooling fan computer. put 680uf capacitor on pwm output smooth out voltage time gets fan. however, rpm sensing doesn't work out @ all! using pulsein() function read rpm. @ full speed works, @ low speed reads part of time, @ medium speed shows rpm being faster full speed. makes no sense. there possible way make work pwm? unless pwm interferes pulsein(), can't think of atm.  see code?  waiting go high low or low high?  taking multiple readings , averaging them? Arduino Forum > Using Arduino > General Electronics > Cooling Fan RPM Sensing arduino

Processing + Hacked printer .. where to start?

today decided open old epson printer bought ages ago , try rewiring arduino. luckily didn't take long before got work , run smoothly using adafruit motorshield , replacing cartridges simple marker. i managed first results programming clumsy lines of code... describing each movement motors have (i using 1 of motors control x , 1 make page go , down) in order draw simple shapes. nothing new really, explore area! but wondering if tell me start thing going, getting more interesting. planning of using processing, never used before, draw or open bitmap , transform motors movements "printer".. any advice welcome! lot!  i assume can't lift pen away paper ? if true "printer" "etch sketch" toy. lot's of people have interfaced toys arduino 2 stepper motors. try google "arduino etch sketch" should give pointers started. Arduino Forum > Using Ardui...

UART vs SPI

salve tutti...sto realizzando un progetto che prevede l'utilizzo di tre moduli che comunicano con arduino; due comunicano tramite uart e uno tramite spi. ora non essendo un esperto mi chiedo se la cosa non possa creare problemi o se fosse meglio che tutti comunichino nello stesso modo. così naso preferirei la seconda opzione ma mi farebbe piacere un vostro consiglio... eventualmente mi potreste suggerire un rtc che comunichi via uart??? grazie mille davide la seriale che viene gestito dal uart é una seriale bidirezionale asincrona con una velocitá ridotta e per collegare 2 apparecchi. segnali viaggiano su 2 fili. la spi é una seriale bidirezionale sincrona (con un segnale clock) e un segnale per selezionare del apparecchio (si possono collegare piú cose al arduino). segnali viaggiano su 3 fili e uno in piú per ogni dispositivo collegato. non credo che trovi rtc con interfaccia seriale uart. perché non usi un rtc con i2c? spiegaci cosa vuoi fare e che ...

My site: vakantiehuisdekim - Joomla! Forum - community, help and support

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hey i changed site self written html/php code joomla today, check out! mod note:  edited thread title remove url. forum rules -mmmedia http://www.vakantiehuisdekim.nl this not joomla! site. were referring different site? Board index Joomla! Official Sites & Infrastructure Sites & Infrastructure - Feedback/Information Archived Boards - All boards closed 1.0 x Site Showcase - Archived.

How to use Arduino data from the USB on RPi - Raspberry Pi Forums

hi there, have rigged arduino rpm detector using hall effect sensor , , works well. down loaded arduino ide lap top , used serial monitor see reading coming in, nice. want same thing using rpi , use incoming readings arduino drive graphical interface, thermometer style widget thats color coded , bad speeds. first problem have not sure how capture incoming reading usb port, there library available working usb, use lazarus/fpc coding. know of examples of such coding. information helpful. many thanks. mm under linux (as under windows) arduino board seen serial port have access data talking or listening serial port. beware of logic level arduino's board powered 5v , raspi ios not 5v tolerant. raspberrypi

What to do with unused pins

i know might noob questions, , think know answer but; for long term, best set unused pins output or input, high or low? setting them input,high enable internal pullup , small amount of current flow. i'm thinking setting them output,low best. quote setting them input,high enable internal pullup , small amount of current flow. flow where? Arduino Forum > Using Arduino > Programming Questions > What to do with unused pins arduino

Bluetooth Enabling a Panasonic Receiver..

hey all, i'm trying title says, i've got rather old panasonic surround receiver i'd put arduino in. i've been trying ways of doing it, , wondering if arduino able press buttons speak. if send signal instance press power button, or raise volume. or change input method. receiver have panasonic sa-ht210. ty answers quote from: boredone on may 01, 2012, 03:27 am hey all, i'm trying title says, i've got rather old panasonic surround receiver i'd put arduino in. i've been trying ways of doing it, , wondering if arduino able press buttons speak. if send signal instance press power button, or raise volume. or change input method. receiver have panasonic sa-ht210. ty answers yes, there various ways arduino "push button." Arduino Forum > Topics > Home Automation and Networked Objects > Bluetoot...

is there a good chip for extra ADC's?

hey everyone, i building line follower , wondering how more adc pins on arduino based robot standard 6 come arduino. idealy need total of 8, in general, wondering if there "goto" chip people commonly use adc's , how works , how fast compared standard arduino pins etc. thanks -epic some options: 1. use arduino mega, has 16 analog input pins. 2. stick single adc in arduino (which assume uno or other atmega328-based one), expand number of inputs using external analog multiplexer such cd4051b (which gives 7 additional inputs using 3 output pins) or cd4052b (which gives 6 additional inputs using 2 output pins). 3. if need higher adc conversion speed or higher resolution , not more inputs, go external adc spi or i2c interface. there lots choose from, , can't recommend 1 without knowing speed , resolution want. Arduino Forum > Using Arduino > Proj...

Reading RoboClaw using packet serial, but can I use pins D0 and D1?

i'm using ethernet pro (based on arduino uno) , i'm using roboclaw motor controller , communicating using packet serial. since digital pins d0 , d1 meant serial communication (from understand), though logic pins roboclaw on d5, d6, still able use d0 , d1 digital i/o pins? for example: code: [select] #include "bmserial.h" #include "roboclaw.h" #define address 0x80 roboclaw roboclaw(5,6); void setup() {   roboclaw.begin(2400); } void loop() {   roboclaw.forwardm1(address,64); //start motor1 forward @ half speed   roboclaw.backwardm2(address,64); //start motor2 backward @ half speed   delay(2000);   roboclaw.backwardm1(address,64);   roboclaw.forwardm2(address,64);   delay(2000);   roboclaw.forwardbackwardm1(address,96); //start motor1 forward @ half speed   roboclaw.forwardbackwardm2(address,32); //start motor2 backward @ half speed   delay(2000);   roboclaw.forwardbackwardm1(address,32);  ...