We found that our ROV’s thrusters are not powerful enough, and the circuit board seems not very stable. Maybe in the waterproof box there is too many circuit board, and the wire we call “杜邦線” is not fixed enough, so as all connectors.

Also we didn’t do our best to waterproof our box, sometime it doesn’t work, so the circuit board is dangerous.

The algorithm between ROV and controller is not good enough, so all the action cannot be done at the same time. The coming ROV should use a Joystick with PC, and control ROV using RS485, maybe we will use XBOX360′s controllers.

the frame of ROV should be made with metal, Macau Science Center maybe can help us to do that.

Inertial Navigation System is my project this year, and it can help ROV know it’s position, also it can make sure your ROV is stable, and it can make your ROV float and sink more easily. But there is a lot of problem here…..

In this trip we met the Hawaii team and we became very good friends. I had learn a lot of thing form them, we play together and the don’t mind my poor English skill, i will never forget your friendship. I hope that we will meet again in next years ROV competition, and grow up together.

yeah!!!!!

At there i have made many friends and also insight many excellent projects around the world.

Especially Pin exchange, I have made many friends, collected much pin and took many photos, the pin made my coat is shining, i like it very much!

In the Intel ISEF night at Club Nokia, at there i have made a very good friend Chelsea, she talk to me so much, tell me how to dance and understand about my poor English. Actually i feel nervous at that night, but she was sure that i can do my best, she encourage to me so much! thank you so much! Maybe we will meet again in next year. I hope that i can understand more about your project.

and also, Leon introduced a friend also called Leon to me, he had built a very good robot to help people to recycle the resources, but unluckily his battery had been confiscated so that it can’t work, and he is not good at English just like me but there are no interpreter  can help. He is not good at electronic so he put a big computer in his robot, but he is good at Mechanical, because in his robot i can see there is many think done very well and neat,  i should learn something form him especially about Mechanical.

finally we have got the 4th awards!! thank you all!

Wallace >> your business cards design is very good!! and your clip for ROV made many judges laugh HAHA!

NapX >> your opinion is very good and you help me a lot

Chongman >> you are so cool but you have gave me so many support.

Madao >> you are good at making GUNDAM module and you paint our ROV so Attractive!!

Leon >> with your fluent English that we can met the judges so success and the report is very great!

Bear >> you did too many things that i can’t make a summary to you :S

Bernard >> you are good at design and poster, and also you gave us lots of support, encourage us so much!

classmate&Miss Lao >> you tell me how to talk in English that people know me, that is very important

Official HKYSTIC >> you gave us many detail, thank you very very much.

Sin >> you know me very much, i don’t know how to say, i have many storys want to tell you.

Mum and Dad >> without your support, i can’t do that well.

Thomas SIR >> if i haven’t join with you when i was 15, i think i don’t know what is science, you pay out very very much and you never want to ask it back, thank you very much sir, you are the best teacher i have seen!

I love you all!

I love Science!

I love ISEF!

actually i had made Version 2, but we don’t have time to make a video…

and there is my twitter, follow me on here

but now it can’t work underwater, I’ll buy an underwater ultrasonic sensor, I hope that it can work underwater.

But I should finish another projects now.

i think that many of you may know the elements about how the LED Matrix run, at here, i will not talk about it.

Actually i had used 24 transistors (2N3904) to drive the LEDs, and with 330 ohms.

about ATmega8, it just need 4 pins that you can control this board easily, because SPI, i use SPI link 4 74HC595 to ATmega8′s SPI port(PORTB), three of 74HC595 is controlling which line’s LEDs should be control and another one is control the LEDs which has been selected.

you may found the schematic in the video, but it just a simulation, so i hadn’t make transistors in that schematic.

anyway, if you need the source code or something about this you can mail to me: nsmvgpdf@gmail.com

OK, i’ll not talk too more, just show you the demo.

photos:
http://www.facebook.com/photo.php?fbid=1472709254052&set=a.1472708734039.2067676.1123263030#!/album.php?aid=2067676&id=1123263030

and the board i made:

amizing !!

transistors are amizing
they can do many many things
many kinds of amplifier or switch
and digital some thing
i will learn more about it
thats so interesting!

If there has some books about PIC that you think is good, please comment that book’s name or send to me thanks

this time i just want to share a Three Axis Micromachined Accelerometer

http://www.facebook.com/home.php?ref=home#!/album.php?aid=2067864&id=1123263030

I just ADC in ATmega 8 to read this module’s voltage

process that data and control servos

more imformation you can find in that video’s detail~

so like this video~