Getting adequate, high-quality sleep is extremely important for both physical and mental health. However, many people struggle to get the recommended 7-9 hours of sleep per night. A DIY sleep monitoring circuit can help track your sleep cycles and gently wake you up at the optimal time in your sleep cycle so you feel refreshed instead of groggy.

What You Will Need

Building a simple DIY sleep monitoring circuit requires just a few affordable components:

How the Sleep Monitor Circuit Works

The pulse sensor monitors the subtle changes in your heart rate and heart rate variability as you transition between sleep cycles. The data is sent to the Arduino to detect when you are in light sleep, deep sleep, and REM sleep based on your heart rhythms.

When it's time to wake up, the real-time clock triggers the buzzer to emit a gentle tones that increase in volume to bring you out of sleep at the optimal point in your sleep cycle so you wake up feeling refreshed.

The microcontroller can also store sleep cycle data which you can analyze to improve your sleep habits and duration.

Step-by-Step Circuit Assembly Guide

Follow these steps to assemble the DIY sleep monitoring circuit:

1. Connect the pulse sensor to the Arduino

2. Connect the real-time clock module

3. Connect the buzzer or speaker

4. Supply power

5. Upload the code

6. Secure the components

Now you have a DIY sleep monitoring gadget to improve waking up feeling refreshed! Adjust the alarm times and analyze your sleep data over time. Sweet dreams!