The Final Project: Specifications of our Device

Below is a list of specifications relating to our device. Each was chosen to provide the user with a better experience when using the product:

Specification:	Value, Value Range, or Quality:	Rationale:
Counting Time Cycle	1 Minute (30 seconds “On,” 30 Seconds “Off”)	After turning on the machine, the patient has 30 seconds to prepare themselves. The next 30 seconds is used for monitoring to allow for an accurate pulse while not requiring the patient to stay for a full minute.
Red LED	Pulse detection (Either On or Off)	The LED is there to help the patient ensure that a correct reading is occurring. If the light is blinking spastically, this signals to the patient that there is either some interference or the patient is not remaining still. If the light is not blinking at all then there is something wrong with the system as this symbolizes no interruption in the detection of IR light.
Serial Monitor Output	Raw values and “alpha value” corrected values	The numbers displayed on the Serial monitor are there to allow for the user to see the actual value changes from the IR sensor. This helps with troubleshooting and also allows for the alpha value correction to smooth out the number series in case graphing is needed.
Serial Baud Rate	57600 or 115200	In order to successfully detect changes in IR light transmittance, the baud rate for the serial monitor must be at one of the highest possible levels.
Resistor attached to the IR LED	2 kΩ	Using a potentiometer, this resistance value was calculated to be the best resistor value to allow for successful pulse detection.