lab06engr111 - TEXASA&MUNIVERSITY ENGR111B...

TEXAS A&M UNIVERSITY
ENGR 111B: Foundations of Electrical &
Computer Engineering
Lab 6:  Photo-Detection
Team Members: ___Andrew Zeller__________
______Paul Boriack__________

Section Number: _818______ Team Number: ____7_____
This Lab is due by the Beginning of the Next Lab Session.
Written By: Hank Walker
Lorne Liechty

RESULTS: to be uploaded onto elearning.tamu.edu
1.
MEASURING CENTER VOLTAGES
Both Uncovered Covering Left Covering Right
4 . 3 2 2 . 0 1
6 . 3 2
Table R1
2.
Negative Reference Voltage: ____3.4________
Positive Reference Voltage: _____5.32________
COMPARATOR OUTPUTS
Normal Covering Left Covering Right
Low
Reference .78 .25 .78
High
Reference .78 .80 .24
Table R2
3.
Negative Reference Voltage: _____3.4________

Positive Reference Voltage: _____5.32________
Light-Seeking Photo-Detector Operation
Right Sensor
Covered
Left Sensor
Covered
Center
Voltage
(V)
Left
Comparator
Output (0/1)
Right
Comparator
Output (0/1)
Direction of Turn
(Right / Left)
No No 4.32 .78 .77 Straight
No Yes 2.75 .78 .21 Right
Yes No 6.22 .22 .77 Left
Yes Yes 4.61 .77 .78 Straight
Table R3

4.