Week 4 – Design Circuit

Objective for this week :

•   To build the circuit of this project

Description:

• For this week, I build the circuit of this project. Firstly, I need to designs 2 separates circuit consists on main circuit (PIC) and circuit battery charger + motor controller. To avoid wrongly connection, the circuits are constructed on bread board. After a few adjustments to the circuit, the circuit is tested and working properly then I sticks the design with the PCB board.

1.       Sketch the design on the PCB board.
2.     Drill and solder all the components.
3.      Test running the circuit with the program.

•  The hardware circuit is design by using PCB board. The circuit construct with follow the step above. Step starting from design circuit until test the circuit with the program development.
• Here I attached some pictures of the etching process :

FIGURE 1 :
 i) Sketch design on PCB ,
ii) etching using ferric chloride chemical ,
iii) Final product

• After etching process done, we need to drill holes so that we can assemble the components on the PCB. In this part, we need to soldering all of the component at the right place according to the circuit.
•  The assemble process are shown on FIGURE 2.

FIGURE 2 :
i) Assemble components (main circuit)
ii) Assemble components (battery charger circuit)
iii) Finish products