I'm looking for a simple way to measure the distance between 2 devices, basically 1 device will be placed in each leg and one of them will measure the leg stride, at any moment, by calculating the distance between both mechanisms.
I've read you could measure distance with an ultrasound sensor and an ultrasound transmitter or a magnetic sensor, but are they accurate between 0 and 1 meters, in any direction?
If such a solution is feasible could someone point me to some documentation or a project already made?
The specs are roughly the follow:
- distance: 0 to 1m
- accuracy: about +/-5cm
- type of range: omnidirectional (or at least with a good angle)
- size: small enough to fit on someone's heel