5 ms·
good idea https://tautme.github.io/phone-sensors/heartRate.html https://tautme.github.io/phone-sensors/heartRate.html , try setting it on the ground and see how
by adm4 4mo ago
good idea https://tautme.github.io/phone-sensors/heartRate.html https://tautme.github.io/phone-sensors/heartRate.html , try setting it on the ground and see how sensitive it is to foot steps.... or earthquake https://seismosense.com https://seismosense.com