How it works

The device captures raw signals from onboard sensors, applies filtering and smoothing to reduce noise, and calculates vital metrics like heart rate and SpO₂. A program coded for an Arduino microcontroller handles sampling, processing, and updates the LCD in real time.

How to use the Device

• Power On

Press the power button located at the back of the unit to switch on the device. The LCD screen will display a welcome message followed by a series of introductory slides.

• Heart Rate & SpO₂ Measurement

When the display shows "Place Finger", gently insert your finger or thumb into the right opening of the sensor box. Hold still for a few seconds while the device captures and displays your heart rate and SpO readings.

• Pulse Measurement

When prompted with “Place finger/thumb on the pulse”, insert your finger or thumb into the left opening. Remain steady for a few seconds to allow the pulse value to appear.

• Temperature Measurement

When the screen displays “Hold the temp”, place the steel-colored temperature sensor against your hand or the surface you wish to measure. The device will show the current temperature and real-time variations.

• Completion and Restart

After all measurements are completed, a thank-you message will appear. To run the process again, long-press the power button to turn off the device, then press it once more to restart. Follow the on-screen instructions to repeat the measurement sequence.

When the measurement sequence completes, the device will display a thank-you message. To run the sequence again, long-press the power button to turn the device off, then press it again to restart and follow the on-screen instructions.