Hi guys,
I am working with my friends on our project-Line follower. AS I am in IT-dept, and now in second year, I dint come across Microcontrollers yet. My lecturer advised me to use a comparator instead. Plzz help me choose. And about the sensors, is it ok to use ir sensor or a photo diode? I saw some thing about the sensors from old mouses and stuff, can i use them?? And how many? If I use the comparator, how can i control the voltage to the motors???
You can use the Ir leds from a mouse to work as light detectors you wire them backwards they will pick up light very good I have used a opamp as comparator with them the Ir transistors in the mouse don't pickup to good if it's light source is not real close.
if u want ur project done fast go ahead with Opamps because u will take time to learn ucontrollers. About how to able to drive motors u will need to use buffer ICs like ULN2004 or L298(H bridge). about the sensors the IR leds and photo dodes is a fine choice for a starter as range is not a big pbm for U.
Good Luck
Buddy
I get most of the parts from old toys and
TV VCR watch the TV it can hurt you. If you can find a old VCR you can get all you need to make a good line follower