Objectives:
- Recheck all the PCB layout
- To create the virtual circuit for Microcontroller circuit and relay circuit
Procedure:
- List all the component that are involved in this session. The component were:
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| PCB(fibre),masking tape,transparent paper PCB |
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| PCB pen |
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| acid etching |
- The PCB (fibre) needed to be printed by using the transparent paper as shown in figure below:
This step are using the iron to heat up the transparent paper that have printed with the circuit MicroController diagram.
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| After iron the transparent paper |
- The circuit diagram that are appear at the PCB fiber are not cleared enough, so it must be touch up by using the PCB pen as shown as figure below:
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| Cleared PCB printed |
- After that, the PCB must be included the etching processes. The purpose of this processed are to remove the unwanted copper to create a circuit diagram. This step are using the etching acid and hot water. Just shown as Figure below:
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| Step1: put the etching powder into the plastic bowl |
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| Step2: Put boiled water to the etching powder |
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| Step3: Put the PCB into the bowl |
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| Step4: Etching process end |
- The PCB are settled with etching processed. Next, needs to clean up the black ink color at the top of the copper circuit line:
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| After cleaning |
- Drilling process are required to put the component into the PCB:
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| Drilling process |
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| Put component to PCB |
Result and Analysis:
- The PCB for MicroController are designed well. All component such as PIC16F887,Crystal 20Mhz,connector,resistor,voltage regulator 7805,capacitor 22pF and resistor 1K & 47K.
- The component needs to be solder so that the component will conduct electricity very well.
Conclusion:
- The PCB for Microcontroller circuit are designed well. Next, it will be tested after all the component are ready enough to put into the PCB.
- LCD 16x2 needs to be solder properly to connected into this board.
- Next, etching the relay circuit and tested both circuit.
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