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Transmission Method In the transmission method the transmitter i.e. the LED & the receiver i.e. the photo-detector are placed on opposite side of the finger. In this method this finger will be placed between the LED’s & the photo-detector. When the finger is placed a part of the light will be absorbed by the finger and some part will reach the photo detector. Now with each heart beat there will be increase in volume of blood flow this will result in more light getting absorbed by the finger so less light reaches the photo-detector.

Methods for Monitoring Oxygen Saturation in Blood Two different methods are used for transmitting light through the transmitting medium. 

What’s inside the Sensor? Each pulse oximeter sensor probe contains two light emitting diode one emitting red light  and the other emitting near infrared light, it also has a photo-detector. The photo-detector measures the intensity of transmitted light at each wavelength. And using the differences in the reading the blood oxygen content is calculated. The probe is placed on a suitable part of the body, usually a fingertip or ear lobe.

Principle of Pulse oximeter The principle of pulse oximetry is based on the differential absorption characteristics of oxygenated and the de-oxygenated hemoglobin . Oxygenated hemoglobin absorbs more infrared light and allows more red light to pass through. Whereas Deoxygenated hemoglobin absorbs more red light and allowing more infrared light to pass through. 

What is Pulse Oximeter? Pulse Oximeters are low cost non-Invasive medical sensors used to continuously measure the Oxygen saturation (SPO2) of haemoglobin in blood. It displays the percentage of blood that is loaded with oxygen. 

Machine learning system model

An electromechanical relay consists of three terminals namely common (COM), normally closed (NC) and normally opened (NO) contacts. These can either get opened or closed when the relay is in operation.

How Relays Work A relay is a simple electromechanical switchmade up of an electromagnet and a set of contacts. There are four parts in every relay: Electromagnet Armature that can be attracted by the electromagnet Spring Set of electrical contacts

Coming back to a basic electronic component.. Relays..

17) Can include files be nested? Yes. Include files can be nested any number of times. But you have to make sure that you are not including the same file twice. There is no limit to how many header files that can be included. But the number can be compiler dependent, since including multiple header files may cause your computer to run out of stack memory.

Soon we will post referral drive also which will happen next year..

Hi guys.. Thanks for writing us email regarding channel experience and request some materials.. V may need some time to respond all u guys.. Really thanks so many people r interested to learn things.. Thanks for all ur support

If someone wants to implement n have any doubt, u can write to us at info.embeddedfru@gmail.com

Please find the code for PWM..