Handy Non-Invasive Blood Glucose Estimator using Arduino and NodeMCU

People in almost every nation on the earth suffer with diabetes, a widespread chronic disease. Inspecting blood sugar values is imperative for augmenting the longevity of human life. Invasive testing is quite sore and nerve damaging. In this paper, the light obtained from the photo detector is utilized to assess the variance in glucose intensity, which is then employed for measuring the blood glucose content. The detected glucose value is shown on a Liquid Crystal Display (LCD) and also sent to a cloud server using the Node Microcontroller Unit (Node MCU) of the non-invasive embedded system implementation. The estimated glucose value is also sent to the mobile phone and coupled with ThingSpeak for portraying the analytics.