I would like to measure the step length during the walk and I am searching some ideas to solve this problem.
I am not really an expert on sensors so I am trying to collect some information in order to understand how to build a system for this purpose. Normally I use arduino with accelerometers and pressure sensors embedded into shoes.
I was thinking that maybe a possible solution consists in finding the distance between the two feet at every moment, and reading the distance values when each foot hits the ground (such event can be detected by using pressure sensors).
I don't know if some sensors able to track small distances exist. In case can you please give me a link where I can have some information?
Do you have any suggestion or hints to solve this problem?