GOOD LUCK TO ALL FYP PRESENTER
ALSO TO BOTH OF US =)
Self Preparation
Assalamualaikum wbt.
This week will be our scary week because we will be assessed about our project (Infrared Audio Headphone Link for TV). This can be checked through fyp website.
This week will be our scary week because we will be assessed about our project (Infrared Audio Headphone Link for TV). This can be checked through fyp website.
We will some brainwash, read all of the components information on the project so that we can handle questions from both assessors. Research, research, and research again.
Final Touch-up
Assalamualaikum wbt.
We have labelled the casing so that our assessors will understand more about this project.
We have labelled the casing so that our assessors will understand more about this project.
Poster & Brochure
Assalamualaikum wbt.
In the Final Year Project Presentation Day, students should have the poster and brochure (optional) to be presented to both assessors to make them clear about the project.
Poster & Brochure need to be designed with own creativity.
In the Final Year Project Presentation Day, students should have the poster and brochure (optional) to be presented to both assessors to make them clear about the project.
Poster & Brochure need to be designed with own creativity.
Rough design of brochure
Real poster
Real brochure
Testing Hardware
Assalamualaikum wbt.
Now, as the hardware setup is done, this is the third time testing. Hopefully there will be no last minute error occur upon this project project.
Switch OFF
Switch ON
ON
Transmitter ON
Finally our project is successfully function. We hope that, before the presentation day, there is nothing unexpected error happen to this project.
Hardware
Assalamualaikum wbt.
As the circuit is done with testing and function well, so that, we can focus on the hardware development stage.
As the circuit is done with testing and function well, so that, we can focus on the hardware development stage.
Receiver circuit
Transmitter circuit
Second Attempting
Assalamualaikum wbt.
After we done on the second circuit construction, it it the time to test whether the circuit is functional or not.
The transmitter is supplied by 18V DC adapter.
The receiver is powered by a 6V battery consisting of four AA cells connected in series.
Hopefully, our project will run smoothly.
After we done on the second circuit construction, it it the time to test whether the circuit is functional or not.
The transmitter is supplied by 18V DC adapter.
The receiver is powered by a 6V battery consisting of four AA cells connected in series.
Hopefully, our project will run smoothly.
IR LED emits red light to send the signals
Testing the distance
Alhamdulillah... Both of the circuit that we test works well. The transmitter sends the signal while the receiver receives the signal as what we want.
Results:
Adapter
Assalamualaikum wbt.
We need to use 12V AC or 15V DC to 18V DC as a supply, so because of that, we have to buy an 18V DC with rating 1000mA adapter at Jalan Paser Puteh, Ipoh Perak. I (Ezzaty) when to Jalan Pasir Puteh with my father to buy the adapter.
Price: RM60
Today's Task Status: Success!
We need to use 12V AC or 15V DC to 18V DC as a supply, so because of that, we have to buy an 18V DC with rating 1000mA adapter at Jalan Paser Puteh, Ipoh Perak. I (Ezzaty) when to Jalan Pasir Puteh with my father to buy the adapter.
Price: RM60
Today's Task Status: Success!
Reconstruct Circuit
As we do the troubleshooting, in the end, we decide to reconstruct the circuit by making another one circuit because we have no much time and no other better choice. So, we started to trace the PCB circuit from the magazine by using software (trace both PCBs on drawing software - SAI Paint Tools).
After finished tracing both PCBs , we proceed to construct the circuit. We buy another set of transmitter and receiver circuit and then construct the component. So now, here we got two pair of transmitter and receiver circuit!
Troubleshooting
Assalamualaikum wbt.
Last week, we have tested both circuit but unfortunately it doesn't work well which are, lots of noises produced and LED of transmitter unit (to show power) doesn't show up. We proceed to the troubleshooting process to detect the reason behind these problems. We realized that the soldering is not very neat and the soldering iron we used is less of flux (cheap product). We did some research on flux, if soldering iron isn't shiny, it's a sign that it's been re-flowed without using flux, and probably has internal oxidation.
Last week, we have tested both circuit but unfortunately it doesn't work well which are, lots of noises produced and LED of transmitter unit (to show power) doesn't show up. We proceed to the troubleshooting process to detect the reason behind these problems. We realized that the soldering is not very neat and the soldering iron we used is less of flux (cheap product). We did some research on flux, if soldering iron isn't shiny, it's a sign that it's been re-flowed without using flux, and probably has internal oxidation.
Problems detected:
- Capacitor: At first, we tried to reduce the number of capacitor in both circuit. However, it doesn't work (produce lots of noise). Then we add another two 100uF capacitor the stabilize the the sound and reduce the noises.
- Photodiode BP 104: Soldered with inverted polarity.
It was so lucky because we detected the problems. So, fix it!
First Attempting
Assalamualaikum wbt.
Done with the construction on the PCB Board, we proceed on testing the circuit. The circuit is supposed to be supplied with the 12V AC @ 15V DC suplier. At first, because of we do not have exactly 15V DC,we use the 12V DC and also 6V DC to test the circuit.
The circuit is tested, but then there are several problems occurs which is the signal is not transmitted to the receiver exactly like what it used to be.
Problems detected:
- Lots of noises
- LED of transmitter unit (to show power) doesn't show up
- Grounding are too far ( the breaks of small lines of carbon on PCB)
Next step: Troubleshooting
Survey Time
Assalamualaikum wbt.
Before we proceed with buying the component, we did a whole research on our project. We went to many places that sell electric and electronics components and devices to make sure the prices of each component is relevant and work will work efficiently (quality). There are a few places that very popular among E&E students to buy the devices and component as well such as Jalan Pasar at Kuala Lumpur and Jalan Pasir Puteh at Ipoh, Perak. It is easier for us to go to Jalan Pasar than Jalan Pasir Puter at Ipoh to buy components.
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Before we proceed with buying the component, we did a whole research on our project. We went to many places that sell electric and electronics components and devices to make sure the prices of each component is relevant and work will work efficiently (quality). There are a few places that very popular among E&E students to buy the devices and component as well such as Jalan Pasar at Kuala Lumpur and Jalan Pasir Puteh at Ipoh, Perak. It is easier for us to go to Jalan Pasar than Jalan Pasir Puter at Ipoh to buy components.
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Shop name: Nixie Electronics (Malaysia) Sdn Bhd.
Location: No 34, Jalan Landak, Pudu, 55100, Kuala Lumpur, Wilayah Persekutuan
Phone: +603 - 2148 3277
Circuit construction
Assalamualaikum.
According to the Gantt Chant, this week is the week where we suppose to solder all the components to the Transmitter and Receiver unit on PCB. At this stage, we are unable to detect any problem that occur in the circuit because we only focus on the soldering activity.
We put so much hope that these circuits that we solder tonight will be alright without having any error or defects.
According to the Gantt Chant, this week is the week where we suppose to solder all the components to the Transmitter and Receiver unit on PCB. At this stage, we are unable to detect any problem that occur in the circuit because we only focus on the soldering activity.
We put so much hope that these circuits that we solder tonight will be alright without having any error or defects.
Done with soldering all the components on the PCB
Next Step: Test & Troubleshoot
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