Anemometer Current Draw/Windspeed calculations

For other supported Arduino products from Adafruit: Shields, accessories, etc.

Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.
Locked
User avatar
syrinxtech
 
Posts: 6
Joined: Sun Mar 15, 2015 10:37 pm

Anemometer Current Draw/Windspeed calculations

Post by syrinxtech »

Two questions on your anemometer. Do you know the current requirements? Does the current requirements change depending on wind speed?

Second question....is there a formula for converting the analog voltage on the blue wire to either m/s or mph?


Thanks, and keep up the fantastic work.

User avatar
adafruit_support_mike
 
Posts: 67454
Joined: Thu Feb 11, 2010 2:51 pm

Re: Anemometer Current Draw/Windspeed calculations

Post by adafruit_support_mike »

The current consumption maxes out at 10mA and has no relation to wind speed.

The output voltage starts at 0.4v @ 0m/s and goes up to 2v @ 32.4m/s. Crunching the numbers gives the following values:

- 50mV =~ 1 meter per second
- 22mV =~ 1 mile per hour
- 15mV =~ 1 foot per second
- 1mV =~ 2cm per second
- 1mV =~ 3/4" per second

User avatar
syrinxtech
 
Posts: 6
Joined: Sun Mar 15, 2015 10:37 pm

Re: Anemometer Current Draw/Windspeed calculations

Post by syrinxtech »

Many thanks. Great support!

Locked
Please be positive and constructive with your questions and comments.

Return to “Other Arduino products from Adafruit”