photoresistors

[cooldog]

hi

i am thinking of making a robot that can drive it self by two photoresistors. from what i understand i have a power source and two motors and i put photoresistors inbetwwen the motors and power souce.

Questions:
1) what is the max voltage a resistor can have

2) what is the best position for the resistors

3) is my desciption correct

[claesson92]

1) Different voltage for different resistors i guess.
2) In front of your robot. One long out on each side. Bended down against the ground a bit.
3) No idea.

[Admin]

You will want to use the same voltage on your photoresistor as you do for your microcontroller (probably 5V, regulated).

[cooldog]

is there a way to do it without a microcontroller

[dunk]

is there a way to do it without a microcontroller

sure, use a comparator like this:
http://www.robotroom.com/Sandwich.html

dunk.