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I am using TCRT1000 and PIC16F887. I am feeding the output signal straight to the INT pin of the microcontroller. Once connected, i am getting different values for the heart rate. Sometimes it read 35 bpm the next its 3000. Not entirely sure what i am doing wrong.
Thank you for your fast response.
So say having a HPF cutoff frequency of 0.72 Hz that would be alright if the lowest heart rate wanting to measure was 50 bpm?
Having a gain of 100 when using a MCP6004 Low power op amp means what exactly when connecting to the INT pin of a microcontroller?
I have a few questions regarding High pass and low pass filters when calculating a pulse rate.
Why is it that in this link, https://mikroelectron.com/Product/Finger-heart-rate-sensor
The cutoff frequency is set to 0.5Hz? Why did the capacitor and resistor be chosen for the HPF?
Also why does...
Re: Heart Rate Monitor Code in mikroC
Thank you. If you could help me to solve this problem with mikroC and pic16f887 that would be a great help.
I have a few questions:
How does the INT pin or timer work to do this?
I have looked at that code on the embedded lab website but don't understand...
Heart Rate Monitor Code in mikroC
Hi,
I am using easy PIC 6 board with a pic16f887 chip. The code is shown below but I seem to be getting really large values. I am using RA2 as a analogue input (which will be for the amplification circuitry output from my fingertip sensor). I want to achieve...
I understand how the pulse is created and how to collect a pulse. I'm just sure on how to count the analogue input in mikroC.
For example, the link below shows the code used but i don't quite understand what is going on in the code. If anyone can talk me through what is happening that would be...
Hi,
I am currently working on a heart rate monitor with the use of a micro controller. I would like to place the index finger over the sensor and the micro controller will calculate my heart rate by multiplying the beats by 4 after 15 seconds and displaying it on a 16 by 2 LCD display. I was...
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