{"id":1582,"date":"2018-05-17T12:33:03","date_gmt":"2018-05-17T19:33:03","guid":{"rendered":"http:\/\/www.donluc.com\/?p=1582"},"modified":"2018-05-17T12:33:03","modified_gmt":"2018-05-17T19:33:03","slug":"project-6-microview-rht03-sensor-mk07","status":"publish","type":"post","link":"https:\/\/www.donluc.com\/?p=1582","title":{"rendered":"Project #6: MicroView – RHT03 Sensor – Mk07"},"content":{"rendered":"

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https:\/\/www.donluc.com\/wp-content\/uploads\/2018\/05\/DonLuc1805Mk06.mp4<\/a><\/video><\/div>\n

RHT03 Humidity and Temperature Sensor<\/strong><\/p>\n

The RHT03 (also known by DHT-22) is a low cost humidity and temperature sensor with a single wire digital interface. The sensor is calibrated and doesn\u2019t require extra components so you can get right to measuring relative humidity and temperature.<\/p>\n

Features<\/strong><\/p>\n

* 3.3-6V Input
\n* 1-1.5mA measuring current
\n* 40-50 uA standby current
\n* Humidity from 0-100% RH
\n* -40 – 80 degrees C temperature range
\n* +-2% RH accuracy
\n* +-0.5 degrees C<\/p>\n

Technical Specification<\/strong><\/p>\n

Model:<\/strong> RHT03
\nPower supply:<\/strong> 3.3-6V DC
\nOutput signal:<\/strong> Digital signal via MaxDetect 1-wire bus
\nSensing element:<\/strong> Polymer humidity capacitor
\nOperating range:<\/strong> Humidity 0-100%RH; Temperature -40~80C
\nAccuracy:<\/strong> humidity +-2%RH(Max +-5%RH); Temperature +-0.5C
\nResolution or sensitivity:<\/strong> Humidity 0.1%RH; Temperature 0.1C
\nRepeatability:<\/strong> Humidity +-1%RH; Temperature +-0.2C – Humidity hysteresis – +-0.3%RH
\nLong-term Stability:<\/strong> +-0.5%RH\/year
\nInterchangeability:<\/strong> Fully interchangeable<\/p>\n

DonLuc1805Mk06<\/strong><\/p>\n

1 x MicroView
\n1 x MicroView – USB Programmer
\n1 x RHT03
\n3 x Jumper Wires 3″ M\/M
\n1 x Half-Size Breadboard<\/p>\n

MicroView<\/strong><\/p>\n

RHT – PIN 11 – Digital 2
\nVIN – PIN 15 – +5V
\nGND – PIN 08 – GND<\/p>\n

DonLuc1805Mk06a.ino<\/strong><\/p>\n

\r\n\/\/ ***** Don Luc *****\r\n\/\/ Software Version Information\r\n\/\/ 7.01\r\n\/\/ DonLuc1804Mk07 7.01\r\n\/\/ MicroView\r\n\/\/ RHT03 Humidity and Temperature Sensor\r\n\r\n\/\/ include the library code:\r\n#include <MicroView.h>\r\n#include <SparkFun_RHT03.h>\r\n\r\n\/\/ RHT Humidity and Temperature Sensor\r\nconst int RHT03_DATA_PIN = 2;           \/\/ RHT03 data pin Digital 2\r\nRHT03 rht;                              \/\/ This creates a RTH03 object, which we'll use to interact with the sensor\r\n\r\nvoid loop() {\r\n\r\n  \/\/ RHT03 Humidity and Temperature Sensor\r\n  isRHT03();\r\n\r\n  delay(1000);\r\n  \r\n  uView.clear(PAGE);  \/\/ Erase the memory buffer, the OLED will be cleared\r\n  \r\n}\r\n<\/pre>\n
getRHT.ino<\/strong><\/p>\n
\r\n\/\/ RHT03 Humidity and Temperature Sensor\r\nvoid isRHT03(){\r\n\r\n  \/\/ Call rht.update() to get new humidity and temperature values from the sensor.\r\n  int updateRet = rht.update();\r\n  \r\n  \/\/ The humidity(), tempC(), and tempF() functions can be called -- after \r\n  \/\/ a successful update() -- to get the last humidity and temperature\r\n  \/\/ value \r\n  float latestHumidity = rht.humidity();\r\n  float latestTempC = rht.tempC();\r\n  float latestTempF = rht.tempF();\r\n\r\n  uView.setFontType(0);  \/\/ Set font type 0: Numbers and letters. 10 characters per line (6 lines)\r\n  \r\n  uView.setCursor(0,10); \/\/ Humidity\r\n  uView.print( "H : " );\r\n  uView.print( latestHumidity );\r\n\r\n  uView.setCursor(0,20); \/\/ Temperature *C\r\n  uView.print( "*C: " );\r\n  uView.print( latestTempC );\r\n\r\n  uView.setCursor(0,30); \/\/ "Temperature *F\r\n  uView.print( "*F: " );\r\n  uView.print( latestTempF );\r\n     \r\n  uView.display();       \/\/ Display\r\n   \r\n}\r\n<\/pre>\n
setup.ino<\/strong><\/p>\n
\r\nvoid setup() {\r\n\r\n  uView.begin();           \/\/ Begin of MicroView\r\n  uView.clear(ALL);        \/\/ Erase hardware memory inside the OLED controller\r\n  uView.display();         \/\/ Display the content in the buffer memory, by default it is the MicroView logo\r\n  \r\n  delay(1000);\r\n  \r\n  uView.clear(PAGE);       \/\/ Erase the memory buffer, the OLED will be cleared.\r\n   \r\n  uView.setFontType(1);    \/\/ Set font type 1: Numbers and letters. 7 characters per line (3 lines)\r\n  uView.setCursor(0,20);\r\n  uView.print("Don Luc");  \/\/ Don Luc\r\n  uView.display();         \/\/ Display\r\n  \r\n  delay(5000);\r\n\r\n  uView.clear(PAGE);       \/\/ Erase the memory buffer, the OLED will be cleared.\r\n\r\n  uView.setFontType(1);    \/\/ Set font type 1: Numbers and letters. 7 characters per line (3 lines)\r\n  uView.setCursor(0,20);\r\n  uView.print("RHT03");    \/\/ RHT03\r\n  uView.display();         \/\/ Display \r\n  \r\n  delay(5000);\r\n  \r\n  uView.clear(PAGE);       \/\/ Erase the memory buffer, the OLED will be cleared\r\n \r\n  \/\/ RHT03 Humidity and Temperature Sensor\r\n  \/\/ Call rht.begin() to initialize the sensor and our data pin\r\n  rht.begin(RHT03_DATA_PIN);\r\n    \r\n}\r\n<\/pre>\n
Don Luc<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"
RHT03 Humidity and Temperature Sensor The RHT03 (also known by DHT-22) is a low cost humidity and temperature sensor with a single wire digital interface. The sensor is calibrated and doesn\u2019t require extra components so you can get right to measuring relative humidity and temperature. Features * 3.3-6V Input * 1-1.5mA measuring current * 40-50 … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[70,50,38,59,58,10,43],"tags":[],"class_list":["post-1582","post","type-post","status-publish","format-standard","hentry","category-microview","category-arduino","category-digitalelectronics","category-fritzing","category-arduino-programming","category-projects","category-sparkfun"],"_links":{"self":[{"href":"https:\/\/www.donluc.com\/index.php?rest_route=\/wp\/v2\/posts\/1582","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.donluc.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.donluc.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.donluc.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.donluc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1582"}],"version-history":[{"count":3,"href":"https:\/\/www.donluc.com\/index.php?rest_route=\/wp\/v2\/posts\/1582\/revisions"}],"predecessor-version":[{"id":1589,"href":"https:\/\/www.donluc.com\/index.php?rest_route=\/wp\/v2\/posts\/1582\/revisions\/1589"}],"wp:attachment":[{"href":"https:\/\/www.donluc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1582"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.donluc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1582"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.donluc.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1582"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}