Week 11

Tittle

• Try coding Arduino for heart rate measurement

Objective

• To investigate and understand the accelerometer coding
• To combine the accelerometer coding with heart rate coding

Content/procedure

• At this stage we need to do many try and error.
• Found in the internet, how to get the actual value of the accelerometer. Means from that, we need to have mathematical expression for the ADXL 335 accelerometer coding. We must considered the voltage supply value  to the accelerometer and the sensitivity of the accelerometer

Result/Analysis

• After many try and error, finally we got the mathematical coding for the accelerometer.The mathematical shown below:

y/512.30*1.5-1.6)/0.33

• For the threshold value ,the calculation is shown and will be explain in the report

Conclusion

• The accelerometer coding will combine with heart rate coding. For the heart rate, we multiply the sensor reading with 60 second.
• Full Arduino program code is in the final project report .