{"id":1697,"date":"2018-09-21T21:54:13","date_gmt":"2018-09-21T19:54:13","guid":{"rendered":"https:\/\/www.breizh56.fr\/crepp2024\/?page_id=1697"},"modified":"2019-06-05T18:44:01","modified_gmt":"2019-06-05T16:44:01","slug":"dht22","status":"publish","type":"page","link":"https:\/\/www.breizh56.fr\/crepp2024\/technique\/capteurs\/dht22\/","title":{"rendered":"DHT22 Capteur de temp\u00e9rature et d\u2019hygrom\u00e9trie de l\u2019air"},"content":{"rendered":"
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dht 22 Capteur de temp\u00e9rature et d\u2019hygrom\u00e9trie de l\u2019air<\/h1>\n

DHT22 – 5V 3.3V compatible.<\/p>\n<\/div>\n<\/div>\n

\"page7image1760832\"<\/p>\n

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Plage de mesure : temp\u00e9rature de -40\u00b0C \u00e0 80\u00b0C \/ humidit\u00e9 de 0% \u00e0 99.9% RH R\u00e9solution : temp\u00e9rature: 0.1\u00b0C \/ humidit\u00e9: 0.1% RH
\nCe capteur utilise le bus informatique OneWire. De nature similaire \u00e0 I2C, il pr\u00e9sente cependant des vitesses de transmission inf\u00e9rieurs.<\/p>\n

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\"\"<\/a><\/div>\n<\/div>\n

\u00c9lectriquement il n\u2019utilise qu\u2019un seul un fil de donn\u00e9es (SDA).<\/span><\/p>\n

La biblioth\u00e8que DHT est incorpor\u00e9e dans le code du micropython<\/p>\n

exemple en micropython pqp_thermometre.py<\/a> :<\/p>\n

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import machine\r\nimport dht\r\n\r\n# ESP8266: Pin12->GPI12->d6 \r\nt = dht.DHT22(machine.Pin(12))\r\n\r\ndef test():\r\n t.measure() \r\n print(t.temperature())\r\n #print(t.humidity())<\/pre>\n<\/blockquote>\n
utilisation:<\/p>\n
Welcome to MicroPython!\r\n\r\nPassword:\r\n\r\nWebREPL connected\r\n\r\n>>> import pqp_thermometre<\/strong> as t\r\n\r\n>>> t.test()\r\n\r\n15.6<\/pre>\n
 <\/p>\n
@Yvon<\/em><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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retour sch\u00e9ma<\/a><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"
dht 22 Capteur de temp\u00e9rature et d\u2019hygrom\u00e9trie de l\u2019air DHT22 – 5V 3.3V compatible. Plage de mesure : temp\u00e9rature de -40\u00b0C \u00e0 80\u00b0C \/ humidit\u00e9 de 0% \u00e0 99.9% RH R\u00e9solution : temp\u00e9rature: 0.1\u00b0C \/ humidit\u00e9: 0.1% RH Ce capteur utilise le bus informatique OneWire. De nature similaire \u00e0 I2C, il pr\u00e9sente cependant des vitesses de transmission inf\u00e9rieurs. \u00c9lectriquement il […]<\/p>\n","protected":false},"author":7,"featured_media":0,"parent":72,"menu_order":8,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1697","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.breizh56.fr\/crepp2024\/wp-json\/wp\/v2\/pages\/1697"}],"collection":[{"href":"https:\/\/www.breizh56.fr\/crepp2024\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.breizh56.fr\/crepp2024\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.breizh56.fr\/crepp2024\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.breizh56.fr\/crepp2024\/wp-json\/wp\/v2\/comments?post=1697"}],"version-history":[{"count":11,"href":"https:\/\/www.breizh56.fr\/crepp2024\/wp-json\/wp\/v2\/pages\/1697\/revisions"}],"predecessor-version":[{"id":2403,"href":"https:\/\/www.breizh56.fr\/crepp2024\/wp-json\/wp\/v2\/pages\/1697\/revisions\/2403"}],"up":[{"embeddable":true,"href":"https:\/\/www.breizh56.fr\/crepp2024\/wp-json\/wp\/v2\/pages\/72"}],"wp:attachment":[{"href":"https:\/\/www.breizh56.fr\/crepp2024\/wp-json\/wp\/v2\/media?parent=1697"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}