ENGR337 Lab 2020 Spring
Lab 4 An Oximeter
Name: James Ferguson
Email: jwferguson@fortlewis.edu
Lab 4: An Oximeter

Task 1
Build an Oximeter on a bread board

Matterials
2x 1NA 128 PA op amp
1x 741 op amp
1x TCRT5000 IR pair
1x 5mm LED
1x 560 Ω resistor
4x 1 kΩ resistors
1x 10 kΩ resistor
1x 68 kΩ resistor
1x 100 kΩ resistor
1x 4.7 uF capacitor
1x 458 nF capacitor
1x 1N4370 Zener Diode

Breadbord


Output viewed in osciliscope.

ΔTime = 400ms
Task 2
Use Arduino for data acquisition.

Arduino Sketch:
setup () {
    pinMode(A0, INPUT);
    Serial.begin(9600);
}

Loop () {
    Serial.println(analogRead(A0));
}