tag:blogger.com,1999:blog-18114581.post152934419282943119..comments2019-01-02T22:28:35.970+00:00Comments on .g7nbp :: {random noise}: Arduino - HTF3223 Humidity SensorUnknownnoreply@blogger.comBlogger5125tag:blogger.com,1999:blog-18114581.post-61227037649370297252018-12-25T00:00:13.578+00:002018-12-25T00:00:13.578+00:00merci professeurmerci professeurredahttps://www.blogger.com/profile/02078349994241814142noreply@blogger.comtag:blogger.com,1999:blog-18114581.post-43556966414665568582012-01-12T10:02:40.263+00:002012-01-12T10:02:40.263+00:00Ive just realised I didnt include a link to Emily&...Ive just realised I didnt include a link to Emily's sensor page in the post:<br /><br />http://myweatherblog.wordpress.com/livedata/ is the data and there is a bit more about the equipment http://myweatherblog.wordpress.com/equipment-4/g7nbphttps://www.blogger.com/profile/08057630143454476665noreply@blogger.comtag:blogger.com,1999:blog-18114581.post-68603548404431366862012-01-08T22:45:05.182+00:002012-01-08T22:45:05.182+00:00The modules we had didnt actually have the tempera...The modules we had didnt actually have the temperature sensor fitted so the pin for temp out was floating. The boards come either with or without the temnp sensor.<br /><br />However, even if it did, we probably wouldnt have used it. <br /><br />Reason?? - learning. <br /><br />Emily is 13 and just starting out in electronics and software development. We started out with and arduino with a simple switch, reporting on/off via serial. Next we did reading a value from a potentiometer - with background understanding about the ratios involved in a potential divider circuit. Then we looked at LDRs for light levels - agin as a potential divider. Then we looked at actual voltages being measured along with discrete step size for the ADC and looked at the TMP36 sensor. <br /><br />Each of the above steps was run via crocodile clips / EWB as a simulation, then tested on breadboard and finally as a circuit in its own right. Each stage was tested and incorperated into the project stage by stage over a period of about 12 months so the tmp36 circuit was already built and tested and working long before the Humirel was even on the bench<br /><br />Only when we had got to the point fully understanding ADC representation of light and temperature values did we move on to more complex ways of representing a real world value as a variable input - in this case a variable frequency used to represent relative humididty.<br /><br />Sometimes the best approach for learning is not the simplest - nor the best engineered.g7nbphttps://www.blogger.com/profile/08057630143454476665noreply@blogger.comtag:blogger.com,1999:blog-18114581.post-44965420011866066742012-01-08T10:05:34.786+00:002012-01-08T10:05:34.786+00:00Thanks for the code this was a nice start for me.
...Thanks for the code this was a nice start for me.<br />But don't you use the temperature coming from this sensor?Pimhttp://google.comnoreply@blogger.comtag:blogger.com,1999:blog-18114581.post-68802836266834907122011-09-14T15:00:21.116+01:002011-09-14T15:00:21.116+01:00Edited: noticed that blogger was stripping the cod...Edited: noticed that blogger was stripping the code after the < in the getFrequency function - corrected now.g7nbphttps://www.blogger.com/profile/08057630143454476665noreply@blogger.com