My group has decided to use the above mentioned sensor for a path following vehicle.
I am having difficulty trying to figure out how to use the sensors as an input by charging all of them up and discharging them using the same 8 pins from the micro controller I am using.
From what I’ve read is that I would need to charge the capacitors up and then calculate the time they take to discharge and accordingly i’ll know whether the sensors are detecting a white line or the black road.
I wanted to know:
How do I charge the capacitors for let’s say 10ms without using extra pins from the micro controller?
What should be my sampling time?
How long is the discharge time if the sensor is sensing white line and how long is it when the sensor is sensing the black road?
I am using ATMEL AT89C55WD chip which is compatible with 8051 micro processor.
A quick reply would be highly appreciated. Thanks in advance.