]> 2026-04-30T20:51:51+02:00 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.<br /><br /><br/><br /><br />=== Bibliothèques ===<br />Il faut importer les bibliothèque <br /><br />- OneWire<br /><br />- DallasTemperature<br/><br /><br />===Schéma de câblage===<br /><div class="annotatedImageDiv" typeof="Image" data-resource="Fichier:Item-Capteur de temp rature DS18B20 DS18B20-cablage.png" data-sourceimage="https://www.wikidebrouillard.org/images/f/f1/Item-Capteur_de_temp_rature_DS18B20_DS18B20-cablage.png"><span ><div class="center"><div class="floatnone"><a href="/wiki/Fichier:Item-Capteur_de_temp_rature_DS18B20_DS18B20-cablage.png" class="image" title="cablage DS18B20"><img alt="cablage DS18B20" src="/images/f/f1/Item-Capteur_de_temp_rature_DS18B20_DS18B20-cablage.png" width="1024" height="576" data-file-width="1024" data-file-height="576" /></a></div></div></span></div><br/><br /><br />===Code Minimal===<br /><br /><br /><table class="wikitable" cellspacing="0" border="0"><br /><tr><br /><td height="17" bgcolor="#999999" align="left"><br /></td><td valign="middle" bgcolor="#999999" align="center"><br /></td><td bgcolor="#999999" align="center">DS18B20<br /></td></tr><tr><br /><td rowspan="2" valign="middle" height="49" bgcolor="#999999" align="center">Avant le Setup<br /></td><td valign="middle" bgcolor="#999999" align="center">Importation de la bibliothèque<br /></td><td valign="middle" align="left">#include <OneWire.h><br />#include <DallasTemperature.h><br /></td></tr><tr><br /><td valign="middle" bgcolor="#999999" align="center">Création de l’objet<br /></td><td valign="middle" align="left">OneWire oneWire(ONE_WIRE_BUS); // je crée une instance OneWire<br />DallasTemperature sensors(&oneWire); //je passe One Wire à Dallas temperature<br /></td></tr><tr><br /><td valign="middle" height="17" bgcolor="#999999" align="center">Dans le Setup<br /></td><td valign="middle" bgcolor="#999999" align="center">Démarrage de l’objet<br /></td><td valign="middle" align="left">sensors.begin();<br /></td></tr><tr><br /><td valign="middle" height="41" bgcolor="#999999" align="center">Dans le Loop<br /></td><td valign="middle" bgcolor="#999999" align="center">Utilisation<br /></td><td valign="middle" align="left">sensors.requestTemperatures(); //commande pour récupoérer la température<br />//Nous utilisons la fonction ByIndex et, à titre d'exemple, nous obtenons la température du premier capteur uniquement.<br /><br />float tempC = sensors.getTempCByIndex(0);<br /></td></tr></table><br /><br />===Exemple===<br /><div class="mw-highlight mw-content-ltr" dir="ltr"><pre>// Include the libraries we need<br />#include <OneWire.h><br />#include <DallasTemperature.h><br /><br />// Data wire is plugged into port 2 on the Arduino<br />#define ONE_WIRE_BUS 2<br /><br />// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)<br />OneWire oneWire(ONE_WIRE_BUS);<br /><br />// Pass our oneWire reference to Dallas Temperature. <br />DallasTemperature sensors(&oneWire);<br /><br />/*<br /> * The setup function. We only start the sensors here<br /> */<br />void setup(void)<br />{<br /> // start serial port<br /> Serial.begin(9600);<br /> Serial.println("Dallas Temperature IC Control Library Demo");<br /><br /> // Start up the library<br /> sensors.begin();<br />}<br /><br />/*<br /> * Main function, get and show the temperature<br /> */<br />void loop(void)<br />{ <br /> // call sensors.requestTemperatures() to issue a global temperature <br /> // request to all devices on the bus<br /> Serial.print("Requesting temperatures...");<br /> sensors.requestTemperatures(); // Send the command to get temperatures<br /> Serial.println("DONE");<br /> // After we got the temperatures, we can print them here.<br /> // We use the function ByIndex, and as an example get the temperature from the first sensor only.<br /> float tempC = sensors.getTempCByIndex(0);<br /><br /> // Check if reading was successful<br /> if(tempC != DEVICE_DISCONNECTED_C) <br /> {<br /> Serial.print("Temperature for the device 1 (index 0) is: ");<br /> Serial.println(tempC);<br /> } <br /> else<br /> {<br /> Serial.println("Error: Could not read temperature data");<br /> }<br />}</pre></div><br/></nowiki> Item-Capteur_de_temp_rature_DS18B20_capteurDS18B20.jpg 2023-03-09T15:22:57Z 2460013.1409375 Capteur de température DS18B20 0 0 0