It is that time again! SparkFun Electronics will be closed Friday, January 13th for our annual inventory day. Please keep in mind that any orders placed after 2PM (Mountain Time) on Thursday, January 12th will not ship or be prepared for local pickup until we open for normal operations on Monday, January 16th. In addition, tours will resume on Friday, January 20th. Thank you for your patience!

Member #392728

Member Since: December 26, 2012

Country: United States

  • How did you calculate the 50.74 ? const float WIND_RPM_TO_MPS = 50.748803; // divide RPM by this for meters per second in the USB Weather Board V3 firmware?

    The datasheets states that 1 click/s gives 2.4 Km/h or 0.67 m/s. Assuming 2 clicks per rotation: 1 Rotation/s corresponds to 1.3333 m/s now if you have RPM the speed should be (RPM/60) * 1.3333 m/s or RPM/45

    How did you come up with the 50.74?

No public wish lists :(