Line Follower :P

My first line follower

Ever heard about line follower before? Yea, it's a robot that will follow the track on the floor ;)









Okay, that's a little result of my study at the college. With my friends (Jati and Ivan), after such an effort having a lot of tough times, starving, sleepy, dying, (almost) stressed out, and many times we spent together, finally we finished this robot assignment xD

Here are some pics:

Own-built power supply

The driver on the PCB fiber :D

"Rainbow" we named it coz there are many colour xP

Here is the video. In this video, it was before we re-made the sensors, coz of some error existed-like the 90 degree turn and the others.











A little bit-overview:
-Input: 8-9 volts (Using power supply)
-Output: about 6 volts to the motor DC
-Comparators: LM 358 and LM 324
-Logical IC: 78-04 (NOT gate), 78-00 (NAND gate), and 78-32 (OR gate)
-Sensors: we used the LEDs superbright and photo diodes. Guess what? We used 4 sensors while lots of our classmate used just 2 or 3 sensors :p
-Gearbox: I'm not sure about the ratio, we took it from toys anyway.
-Using h-bridge.
-And a lot of components like resistors, transistors, etc that can't be explained one by one.

*Note: There is no microcontroller coz we haven't learn it yet -__-*

Proud? Oh yea OF COURSE! We made it into finish smoothly, and we got the perfect score coz we're the fastest among the others! Hard works finally paid! LOL =))