]> 2026-11-13T00:45:42+00:00 Item:Capteur de température DS18B20 950 fr Published 1.5 EUR (€) le DS18B20 est un capteur de température <nowiki>C'est un capteur One Wire qui renvoie donc l'information avec un seul fil. === Bibliothèques === Il faut importer les bibliothèque - OneWire - DallasTemperature ===Schéma de câblage=== <div class="annotatedImageDiv" typeof="Image" data-resource="Fichier:Item-Capteur de temp rature DS18B20 DS18B20-cablage.png" data-sourceimage="https://wikidebrouillard.qualif.dokit.app/images/f/f1/Item-Capteur_de_temp_rature_DS18B20_DS18B20-cablage.png"><figure class="mw-halign-center" typeof="mw:File/Frameless"><a href="/wiki/Fichier:Item-Capteur_de_temp_rature_DS18B20_DS18B20-cablage.png" class="mw-file-description" title="cablage DS18B20"><img alt="cablage DS18B20" src="/images/f/f1/Item-Capteur_de_temp_rature_DS18B20_DS18B20-cablage.png" decoding="async" loading="lazy" width="1024" height="576" class="mw-file-element" data-file-width="1024" data-file-height="576" /></a><figcaption>cablage DS18B20</figcaption></figure></div> ===Code Minimal=== <table class="wikitable" cellspacing="0" border="0"> <tr> <td height="17" bgcolor="#999999" align="left"> </td><td valign="middle" bgcolor="#999999" align="center"> </td><td bgcolor="#999999" align="center">DS18B20 </td></tr><tr> <td rowspan="2" valign="middle" height="49" bgcolor="#999999" align="center">Avant le Setup </td><td valign="middle" bgcolor="#999999" align="center">Importation de la bibliothèque </td><td valign="middle" align="left">#include <OneWire.h> #include <DallasTemperature.h> </td></tr><tr> <td valign="middle" bgcolor="#999999" align="center">Création de l’objet </td><td valign="middle" align="left">OneWire oneWire(ONE_WIRE_BUS); // je crée une instance OneWire DallasTemperature sensors(&oneWire); //je passe One Wire à Dallas temperature </td></tr><tr> <td valign="middle" height="17" bgcolor="#999999" align="center">Dans le Setup </td><td valign="middle" bgcolor="#999999" align="center">Démarrage de l’objet </td><td valign="middle" align="left">sensors.begin(); </td></tr><tr> <td valign="middle" height="41" bgcolor="#999999" align="center">Dans le Loop </td><td valign="middle" bgcolor="#999999" align="center">Utilisation </td><td valign="middle" align="left">sensors.requestTemperatures(); //commande pour récupoérer la température //Nous utilisons la fonction ByIndex et, à titre d'exemple, nous obtenons la température du premier capteur uniquement. float tempC = sensors.getTempCByIndex(0); </td></tr></table> ===Exemple=== <div class="mw-highlight mw-highlight-lang-arduino mw-content-ltr mw-highlight-lines" dir="ltr"><pre>// Include the libraries we need #include <OneWire.h> #include <DallasTemperature.h> // Data wire is plugged into port 2 on the Arduino #define ONE_WIRE_BUS 2 // Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs) OneWire oneWire(ONE_WIRE_BUS); // Pass our oneWire reference to Dallas Temperature. DallasTemperature sensors(&oneWire); /* * The setup function. We only start the sensors here */ void setup(void) { // start serial port Serial.begin(9600); Serial.println("Dallas Temperature IC Control Library Demo"); // Start up the library sensors.begin(); } /* * Main function, get and show the temperature */ void loop(void) { // call sensors.requestTemperatures() to issue a global temperature // request to all devices on the bus Serial.print("Requesting temperatures..."); sensors.requestTemperatures(); // Send the command to get temperatures Serial.println("DONE"); // After we got the temperatures, we can print them here. // We use the function ByIndex, and as an example get the temperature from the first sensor only. float tempC = sensors.getTempCByIndex(0); // Check if reading was successful if(tempC != DEVICE_DISCONNECTED_C) { Serial.print("Temperature for the device 1 (index 0) is: "); Serial.println(tempC); } else { Serial.println("Error: Could not read temperature data"); } } </pre></div> </nowiki> Item-Capteur_de_temp_rature_DS18B20_capteurDS18B20.jpg 2023-03-09T15:22:57Z

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Capteur de température DS18B20 0 0 0 0