Capteurs et arduino

-

bonjour. je veux savoir la distance maximale entre un capteur et l'arduino. mon arduino se trouve à l'intérieur et le capteur (capteur humidité sol) au jardin. merci.

tout depend de la liaison...

spi/radio/ i2c ?? autre??


suivant la techno tu peux aller de quelque centimetre plusieurs kilometre...

pour eviter de tirer des cables, et non pratique, car des cables qui traine dans un jardin, peut etre casser par un enfant ou accidentelle  ou manger par un chien ou autre animaux...

il est préférable d'utiliser une liaison radio lorsqu'on met l'exterieur un capteur.


Arduino Forum > International > Français (Moderators: jfs, Snootlab) > Capteurs et arduino


arduino

Comments

Post a Comment

Popular posts from this blog

Help with codes to add 1 more shift register and add more to matrix LED

-
hi im working on 8x10 matrix leds , successful @ using guide http://www.instructables.com/id/810-led-matrix-with-4017/ using 4017 , 74hc595 now want expand matrix 16x10. i connected , worked added 74hc595 control second 8x10. my problem want display text using both 8x10 im using code guide , modified think doesnt work code: [select] #define someshape    {b0100001001000010,b1110011101000010,b0100001001000010,b0000000001000010,b0001100001000010,b0001100001000010,b1000000101000010,b1000000101000010,b0100001001000010,b0011110001000010  }    #define all     {b1111111111111111,b1111111111111111,b1111111111111111,b1111111111111111,b1111111111111111,b1111111111111111,b1111111111111111,b1111111111111111,b1111111111111111,b1111111111111111  }                        #define someshape2   {b0100001001000010,b1110011101000010,b0100001001000010,b0000000001000010,b000110000100001...
Read more

tcp client

-
i'm using arduino uno , w5100 ethernet shield. i'm trying connect ethernet shield software downloaded ( sockettest v3.00) communication between server (sockettest) , shield (client).the shield jack connected router. created server under ip address of laptop. uses telnet client example can't connect server on sockettest. first time i'm doing tcp/ip , had done similar project or guide me on this. sockettest - http://sockettest.sourceforge.net/ uno - https://store.arduino.cc/arduino-uno-rev3 ethernet shield - http://www.hobbytronics.co.uk/arduino-wiznet-shield here code -------------------- code: [select] #include <spi.h> #include <ethernet.h> byte mac[] = {   0xde, 0xad, 0xbe, 0xef, 0xfe, 0xed }; ipaddress ip(192, 168, 1, 220);// shield ip ipaddress server(192, 168, 1, 37); // computer ip ethernetclient client; void setup() {   // start ethernet connection:   ethernet.begin(mac, ip);// open serial communications , wait port open: ...
Read more

Can't read sms using Thinker A7 communicate with Arduino

-
Image
hi guy i'm trying communicate ai thinker a7 module. on arduino uno r3 im using pin 7,pin 8 connect utxd & uaxd. when send sms phone module thinker 7, use arduino read sms. my code bellow code: [select] #include <softwareserial.h> #include <string.h> char incoming_char = 0; softwareserial cell(7, 8); //my shield uses these pins software serial. void setup() {  serial.begin(115200);  cell.begin(115200);  delay(2000);  serial.print("starting modem communication...");  delay(12000);  serial.print("ok\nintroduce @ commands:\n"); } void loop() {  if(cell.available() > 0)  {    incoming_char=cell.read();        if(incoming_char=="a"){      serial.println("content of sms a"); //if sms contains "#" arduino looks commands follow.      serial.println(incoming_char);    }    else    { ...
Read more