Testing and User Feedback

Asking Dartmouth Varsity swimmer wearing FINA certified blackout goggles to stop when they believe they are three feet from the wall. Later, with tapping at T, getting feedback on where swimmers prefer to be told they are approaching the wall. They unanimously agreed that receiving feedback closer to the T is more helpful than receiving feedback at the flags.

Arduino Uno with ultrasonic sensor and audio output when within one meter of wall

Arduino Uno with ultrasonic sensor and haptic output when one to three meters from the wall

Identifying that the device’s proximity readings on land match reality

Testing to see if the sensor works underwater and what the read distance output is when underwater

This testing ended up frying the sensor which did not work underwater

Testing to make sure case is waterproof so no electrical components get wet

Initial test with sealant on outside had leakage

Later test with sealant in seam was fully waterproof