Lego Wedo Anemometer
|
|
Here's an anemometer I made using a Lego Wedo set, Scratch, a few old pie cases and Blutac.
In Scratch I used a simple conditional loop to provide a pulse every time the sensor gave a reading of less than 10 (caused by the paddle's position near the sensor). I created a variable that counted the number of turns. It is quite easy to get this to reset to zero every minute, so that children can log the number of turns each minute. Programming Scratch to calculate the wind's speed directly is a nice little challenge that involves a bit more maths and coding, ideal for enthusiastic older children. As well as measuring wind speed you could also make the device control a game or simulate a real system that responded to wind, such as an automatic sail hoist. You can see my attempt at this with my daughter's pirate ship in the video below. |
|
|
|
