Construct and soldering component

Week 8

Title of the project:  Construct and soldering component

Objective: Build the actual circuit

Content/Procedure: 

PIC circuit

Heater circuit

Analysis:

While doing this circuit, the important thing that must take note is the actual design of component. If the design has a problem of size component, it cannot be match into circuit. From the picture, component can be locating at circuit and have jumper to another circuit. The jumper used to connect the input and output of PIC such as the variable resistor, sensor LM35 and heater circuit. Also, at input terminal (supply) have a connection to give main supply at the circuit.   

Conclusion:

In this work, the difficulty are face when need to locate component. Student should careful to do soldering process because some component have high sensitivity which can burn and cooper will broke if applying high temperature by solder. So, all work must be careful and make sure component still in good condition.

Construct circuit board

Week 7

Title of the project:  Construct circuit board

Objective: Etching process

Content/Procedure:

1)    Print the design on transparent paper/stick paper 

2)    Stick the design on PCB board

         3) Etching process

                   4) After etching process

Analysis:

First step of etching is stick the design at PCB board and it should paste all of the carbon because it the way of current flow between component. Next, by using etching liquid the process is to erodible the cooper layer until left only copper line at circuit. Then, clean up circuit layer until look shiny and start process of drill a hole of pin component.

Conclusion:

Etching process is important to make sure all connection will connect between components. So, after this process it should be testing to check the connection of circuit in good condition.

Design PIC circuit

Week 6

Title of the project: Design PIC and heater circuit

Objective: To build the interfacing circuit between the motor, heater and PIC circuit

Content/Procedure:

Design circuit by using software

Analysis:

After complete design using proteus, circuit on software will be transform to be an actual circuit. By using Protel Design System, it already locates component and connection of each component. Student should re-check to make sure have no overlapping layer and circuit will be adjust as needed. The important thing, this software will build as an actual circuit, mean component can be place into circuit with component pin can be place at PCB board.

Conclusion:

This circuit is use to connect between the component in circuit. It can be design as expectation of sizes at the PCB board. So, student can print the design and it ready to paste into PCB board.