4 ms·
Ask HN: Arduino to measure height above water?
Can you think of a good way to make this:
https://woosports.com/kite/
using an Arduino, but not using accelerometers.
- 83 8y agoAccelerometers are a great choice of sensor in this application imo, why not use them? GPS would be an alternative, but pricier and probably less reliable. There are of course a variety of ways to measure height above water like ultrasonic or radar sensors but good luck water sealing them and keeping them oriented downward in this application.
- monk_e_boy 8y agoPutting two Woos on one board gives two different height readings. So they are not perfect. They also mis-read jumps. Just wondered if there was a different way of measuring height. [edit] Boards fall off feet, then get washed around in the surf. This seems to fool the sensors quite a lot.
- dekhn 8y agoIf the water is at the same height as local sea level, then pressure sensor can be used. If properly calibrated it can detect changes of several meters.