Blog 2 - HRV

 Blog 2 - HRV

A pulse senser is used to detect your heart rate, it does this by shinning a LED light onto your skin and then reads the amount of light reflected (photodetector) which creates a analog signal that shows your pulse. As your heart pumps and blood flow changes there are tiny fluctuations in the light absorption.

MicroBit and Power Supply

Senser

BlockCode



Challenges

The main challenge i faced was getting the microbit LED's to blink consistently when the senser detects a heart beat. I found that i had to accommodate for the pressure the person was putting on the senser first and then try detect the fluctuation of the heartbeat around that pressure.

Conclusion

I found this to be a very interesting class as it has given me a insight into the world of IOT and the possibility's. I have learned quite a lot from this task, I have learned how to collect senser data and display that data through small LED's including working with and understanding more about microbits along with learning how to use make code. 




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