PCB Design: Monitor Your Heart Rate for Better Management of Workout

Arshmah Shahkar

For those who go for workouts daily, it has been easy for them to keep track of their moves and steps with the help of a Heart rate monitoring device. To maintain good health it is important to do the exercise at some targeted heart rate. This will help in achieving a better health recovery. Heart rate is a crucial factor in identifying how intense your workout is. If you are over-exerting during a workout your heart will alert you by telling your heart rate through this device.


The LM358 is a transducer amplifier that takes the electrical signals from your heart and converts them to digital signals in the form of pulses. Whenever a pulse is detected this module will turn on the LED. It has a comparator that compares the output voltages to threshold voltages. If the output voltage is higher than the threshold it means the intensity of your workout is high and vice versa.

There are two ways by which heart rate can be measured:

  • Manual
  • Automatic detection

The manual way of measuring heart rate is less efficient than the sensor detection method that is why it is not preferred.

Design Resources:

I have implemented my design on Altium. While designing the PCB board it is important to take care of the footprint and dimensions of each component. Footprints should be exactly the same as per component size otherwise your design will not be perfect. To avoid this inconvenience, I have shared all my component’s symbols, dimensions, and footprints online on Inventhub. Users and manufacturers can view and download schematic and PCB files to implement my design.

Design for Manufacturing:

I have created a release of my project on Inventhub that consists of all the design files in a ZIP file format. The manufacturer and users only need to export this file and they can use my design for fabrication and implementation without any error.

BOM file:

I have created a Bill of Material(BOM) on Inventhub that has all the details of my components with exact footprints, dimensions, and quantity. My component provider will download the file to know my requirements and design needs. This will help me get the same component as I have used in my design.

For detailed information and guidance visit this link: hackster.io

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