Differential Line Follower using PIC16F84A as the brain and L298 for motor driver, in this line follower i used IR pairs from old ball mouse. I constructed the prototype using a prototyping board and used the gearbox and wheels of some cheap toy car lying around.
Schematic:
Schematic Diagram of the Line Follower
Actual Proto:
The finished proto
Close up look of the sensors
Testing of the proto
Tiktak's Projects 
Test it in a sharp 90 degree pathway.
what are the components used there? can you list them? the picture is cannot be enlarged even after downloading it. i’m planning to make this project 🙂
the motor driver is a L298, but you can use L293D instead, PIC16F84A for the controller, LM324 quad opamp some 10K potentiometers, 10K pull-ups, 220-470 ohms for the LEDs
do you need to program any ic used here or just connect them as it was in the schematic?
@cravex, the PIC16F84A needs to be programmed
ano pong program ginagamit nyo po para maprint sa pcb?
MSpaint lang po 😀
muka po kasing nakaeagle yung schematic nyo po. eh yung ibang components wala po sa eagle kahit yung kacompatible nya wala. may soft copy pa po ba kayo ng pcb layout ng mobot using discrete logic gates for steering type chasis? pede po bang pahingi? kelangan na po kasi next week. salamat po. 😀