Use a Circuit Playground Express to monitor for falls. Dan Elijis and Michelle Mendelzburg came up with this project to help elderly people who live alone and are at risk for falls.

From Instructables:

While we cannot prevent these unfortunate incidents ourselves, we have developed several capabilities that warn of a potential falling incident, or ensure high responsiveness during the first critical moments, if such an incident occurred.

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Meet `fellTell`, our extended solution to the presented problem. `fellTell` is a wearable tool, comprised of the following capabilities:

1) While attached to the elderly person’s leg, `fellTell` will sense any slipping or falling incident. If such an incident occurs, `fellTell` will start beeping, to draw attention in case the elderly person is alone

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