Friday, October 2, 2009

Circuit Flow Process

Generally, the circuit given by the demonstrator is shown as diagram above. Actually this circuit is act as auto switch, which can switch the load on or off automatically. For this circuit, the light dependent resistor (LDR) will give the command to the 555 timer IC. The command is send to the timer when got shadow or no lights fall on the LDR. The timer will receive the command on the pin 2, which is trigger input. The timer will process the input and give the output to the relay. The timer required a period of time to receive the input and a period the time to process the output. The time can be calculated by multiplied the resistor (R2) with the capacitor (C1) and In3. The output command will control the coil on the relay, which it can switch on the load or switch off the load. The load will switch off when no light fall on the LDR and switch on when got the light flow on the LDR.

Daily report (2/10/09)

Activities:
-Try to stimulate the given circuit using the circuit maker again.
-The circuit constructed is testing again before starting the soldering work.
-Try to find out the problems and obstacles during the testing and try to solve it.

Place:
Laboratory 1st year for Electric and Electrical (Faculty Engineering and Building Environment)

Date:
2 Oktober 2009

Time: 10.30am-12.30pm
3pm-5pm

Task leader:
Chong Kim Soon

Assistant:
Yii Wen Wen

Working flow process:

This is the fourth day we doing our project. First, we started to stimulate the given circuit using circuitmaker again. Unfortunately, the lucky star seem like don’t stand at our side, the problems we faced yesterday still occur. Without any hestitation, we skipped stimulation part and going on other works in order to save our times.

Before soldering, we test the circuit we constructed yesterday again. After testing no problems, we started our soldering jobs. Basically, soldering work is quite challenging and exciting and somehow our hand may shake when soldering the components. But still the soldering work is managed to finish in times.



The component which is construct on the copper board.















The process of solidering











Then, we tested the circuit again. LED is observed for its brightness. Successfully, LED is on with the red colour lamp then the circuit is considered successful.

Finally, we troubleshooting the circuit and the stimulation part in order to solve the problems we obtained.

*RUSH…RUSH… RUSH!!! Whole day full with rush and hurry!! Since the laboratory don’t open on Saturday and Sunday, we need to rush to the end today in order to complete our laboratory’s works. Thanks for everyone who giving any help and cooperation to us in completing our works~

Tomorrow will be a brand new day for all of us, just wait and feel what will be the amazing things will happen and it may change your whole life!!

Daily report (1/10/09)

Activities:
-Stimulate the given circuit using the software(circuit maker).
-Construct the given circuit using the equipments provided in the laboratory.
-Compare the results with the stimulation values.
-Try to find out the problems and obstacles during the testing and try to solve it.

Place:
Laboratory 2nd year for Electric and Electrical ( Faculty Engineering and Building Environment)

Date:
1 Oktober 2009

Time: 10.30am-12.30pm
2.30pm-5pm

Task leader:
Chong Kim Soon

Assistant:
Yii Wen Wen

Working flow process:

First, we construct the given circuit using the circuit maker to obtain the theoretical values. However, we unsuccessful to stimulate the circuit because the relay part cannot operate in normal way. It take quite long time for us to find the problems and we decided to do hardware first then will settle the stimulation part after that.

We construct the hardware of the circuit and testing using the equipments IDL and testing. LED which as an output is observed for its brightness. If LED is on with the colour lamp then the circuit is considered successful.



Getting the actual value of the component .













This picture which show all the equipment that we used.













Construct the circuit on the breadboard.











Finally, we make the hardware successfully been constructed. We troubleshooting the circuit and the stimulation part in order to solve the problems we obtained.

*What an tiring day!! But the lucky is we manage to get the output LED to light up. And about the stimulation part and the soldering work, left it for next day’s worries.

The earth will still going on even though you face some obstacles in your life~
The only way to manage the obstacles well is to having an optimistic mind~
Hopefully the lucky star will bless us all with its special power *^^*