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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Temperature/Humidity and Formaldehyde calculation are wrong for 5003ST","articleBody":"Hello, \r\nI just test the library with a PMS5003ST and those values were wrong : \r\n- temperature was - 5.5°C instead of something around 22°\r\n- Humidity was also bad.\r\n\r\nThe problems were : \r\n- int8_t cast instead of int16_t\r\n- incorrect reading order. The good one, according to the datasheet, is : hcho, temp, rhum.\r\n\r\nI post a PR to correct theses points. \r\n\r\nI noticed a difference between the sensor and a regular thermometer. \r\nSo I also add a feature to add offset to temperature and humidity to correct theses values : \r\n-  void  set_rhum_offset(float offset);\r\n-  void  set_temp_offset(float offset);\r\n-  float get_rhum_offset();\r\n-  float get_temp_offset();\r\n\r\nThis is based on the library GHTNew (https://github.com/RobTillaart/DHTNew).\r\n\r\n\r\n\r\n","author":{"url":"https://github.com/fmatray","@type":"Person","name":"fmatray"},"datePublished":"2020-11-25T12:58:15.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/16/PMserial/issues/16"}