circuit layout

today I completed the layout for the LDR sensor circuit ... use ... but after arching process ,i detect a problem witch is  i did  not  paste the circuit design on to the board correctly ... 

after ...design using deptress.....this circuit using op-amp (lm238)....

design for ldr circuit sensor ..using op-amp.....

Current Progress

Basically, the current progress is to observe what type circuit and component that include in this project. Therefore there are four type of circuit that must have to run this project.


Pic Circuit
Comparator circuit
Power supply circuit
Dc motor circuit

Short Description of The Circuit 

1. Pic circuit is the main controller of the all function of the circui such as the movement of the DC motor, rotation of the PV cell,  receiving the data from Light dependent resistor (LDR)  and it will display some information and condition of the LDR sensor at liquid crystal display (LCD).
2. Comparator circuit  is use to amplified the signal from the LDR sensor and it also act as the interfacing between the transducer and pic circuit.
3. Power supply circuit is use to transmitted current flow and make deviation current to operated the circuit. For example, to operated dc motor circuit, it requires 12 v and for pic circuit, it required 5v only. Both of this circuit use the different value of voltage and this power supply circuit is come out to fixed this problem.
4. Dc motor circuit is use as the interfacing circuit from pic circuit and dc motor. By theoritically, dc motor cannot be joining directly with pic circuit.  Therefore it must have some medium that must be used to joint this both item to operated the movement of dc motor.

This four circuit is in the design mechanical / circuit development. It is very important to know and classified the type and the function of all this circuit to make sure that in the future, there are no problem encounter  in the part combination all the circuit with programming development.

circuit layout

today I completed the layout for the LDR sensor circuit ... use ... but after arching process ,i detect a problem witch is  i did  not  paste the circuit design on to the board correctly ...