Pulse rate as time unit

Memento Mori serves as a reminder that all things must come to an end. Because of that, every clock or timer is a reminder that time is the most precious thing we have. Starting to look for inspiration I ran into this clock by Aidan Lincoln:


The idea is a visual form of Memento Mori. But I thought what if I can show that the choices we are making can affect our time. I started to think about heartbeats - they have a fixed rate that can change with our physical and mental state. After a short talk with my mom (that used to be a nurse) I learned a couple of things:

  1. Each and every one of us have different fixed rate

  2. When we are stressed or running the rate goes up

  3. When relaxing the rate goes down.

So my idea is: determine that every person's base-rate is a specific time unit. When the rate changes the time unit increases or decreases. The time unit will be visualized by the mechanize that I will build.

I will use a pulse sensor:

This is the start idea but I still have a few thing to figure it out:

  1. What is this device measuring?

  2. Should it be a device you wear or only the sensor?

  3. Does the display need to be graphical or something physical?

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