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This paper is aimed at developing an IoT based heart rate monitoring system using a heart rate sensor, NodeMCU which is a free open source platform for IoT and ThingSpeak Cloud. After this the acquired sensor data is been processed with cluster and exploratory data analysis using R Studio. The cluster analysis of heart rate monitoring can also be used for prediction solution of heart rate for a particular patient. The historical heart rate data are collected in Cloud for further analysis and also can be used for prediction. Since the data collected from sensor is high in volume, the data can be categorized as Big Data. Hence the R script is used for processing the data.
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