Step 4: Soldering Components
Solder all parts on the boards.
Be careful of the correct direction of components.
Use a socket for PIC16F84A IC.
Solder motors and battery holder on the back side of the Bottom board and put some pieces of paper around motors to avoid unexpected contacts in the circuit.
Solder C4 and C5 right on the motors.
Put a piece of paper among potentiometers legs to avoid contacts.