Search found 3 matches

by Human
Mon Aug 27, 2012 2:16 pm
Forum: Sensors
Topic: Wind sensor formula for mph
Replies: 10
Views: 17365

Re: Wind sensor formula for mph

On Arduino, I'm starting to think that this device is a better wind detector than it is a wind speed meter . I can easily tell the difference between some wind and no wind, for normal-range room temperature and for *most* trimpot positions (270 degrees seemed to always output the same value +/- 0.1%...
by Human
Thu Aug 23, 2012 3:05 pm
Forum: Sensors
Topic: Wind sensor formula for mph
Replies: 10
Views: 17365

Re: Wind sensor formula for mph

I have gathered a lot of data, but I have found no clear pattern. In fact, some of the data at similar temperature shows less Voltage being used at higher wind speed. Will try varying my test environment next.
by Human
Mon Aug 20, 2012 2:48 pm
Forum: Sensors
Topic: Wind sensor formula for mph
Replies: 10
Views: 17365

Re: Wind sensor formula for mph

I'm getting a $30 hand-held anemometer to try to calibrate this sensor. I'll try to derive a formula for a given extreme position of the trimpot (max counter clockwise or max clockwise) where temperature and Voltage are input and wind speed is output. I'll post it if I'm successful.