Articles by "improvement"
Showing posts with label improvement. Show all posts

at Wednesday, November 12, 2014

Like many of you, I am so happy to received my first Nuvoton. But after that initial happiness, I begin to wonder what can I do to it.

I look left, look right, look top, look bottom; and have no clue what I can do with the board.

Maybe I try this? How about doing that? Hmm... need to solder. Really mafan lor (troublesome).

How I wish it is like Arduino with the header connectors soldered on.... DING!!! I shall add connectors to my board, so that I could make use of my existing Arduino sensors and modules.

I go to Sim Lim and found the connectors in less than 10min. After facing some difficulties aligning my connectors with Bluetac, I decided to design a jig for soldering XD


Now waiting to print it tomorrow and solder my connectors =)

Below is how it will looks like when it is done  ^_^

If you want to print your own jig, you can download HERE or HERE.


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at Monday, June 30, 2014

Should had finished it last Saturday. Was busy kaypo at Maker Block..LOL

Will post more details on how to download after I collect my test print a few days from now =)

What's difference between Google's and mine?
  1. Google used magnets and cardboard for construction; mine used 3D print and screws. Shapeway version doesn't need screw at all.
  2. Google used Velcro and rubber band to secure the phone; mine just need rubber bands.

 What do you need?
  1. A pair of 25mm Round Magnifying Glass
  2. 4 M3 x 7 or M3 x 10 Countersunk Self Tapping Screws
For lens, a pair of 25mm Round Magnifying Glass does the job (about S$4 for 10. Please send me a pair if you brought them :D). Of course you can always buy the recommended lens by Google :p

For screws, I recommended BN 995 - DIN 7982 C Phillips flat countersunk head tapping screws, Article Number 1420836 or 1376721. You don't need screw for Shapeway version =)

Assembly Instructions:
  1. Use a screwdriver to secure the 4 screws. Not applicable for Shapeway version
  2. Apply some white glue on the rim of the lens. A bit will do.
  3. Slot the lens in
  4. Position your smartphone
  5. Secure with rubber bands


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at Monday, November 11, 2013
You probably heard I had been complaining how suxs my Asus laptop is; but is there a solution to end this problem? I think I might had the answer.

N550JV is known for poor ventilation. It can get heated up to more than 55°C. How I know? I brought a digital thermometer, so that I won't blow this crap again (it blown later that year).

Asus dropped a hint on what went wrong when I collect it. They replaced the WiFi module. After close examine, I concluded that the gap between the exhaust and WiFi cover are too near. It is causing back pressure, thus heating the entire aluminium chassis. It is not an isolation case. I used to have a Macbook Pro and it has the same problem. Unlike Asus, Apple divert the back pressure air to the base cover, which act as a giant heat sink. That's why never put your Macbook pro flat on the table. Tilt it a bit, so that the heat will dissipate.


It's fine if you are always in the aircon room but I don't have an aircon at home all the time. I have to put an external 4" fan to cool (Thanks to the in-genius design, Asus placed the air intake in the middle of the base cover, which will heat up the laptop even more if you use a laptop cooler due to air exhaustion.)

Let us begin. First I need to take some serious measurements by dismantle the part for measurement. My friend Jimmy is a seasoned technician, so things go better than we expected and end less than 30min =)

Next I CAD the WiFi Cover using Solidworks.


Once I had the Cover CAD, I can start improvements. I came out 2 designs, namely Type 1 and Type 2. Both got their pros and cons, depending on usage.

Once I am happy with my design, I modified one of the drawing, so that it is suitable to print on a RepRap printer. Reprap printed parts are not so precise but it is good enough to have a feel and proof of concept. After waiting for 2 weeks, Francis (Romscraj) passed me the part.

After verifying the part printed by Reprap printer and checked its strength, I tweak my design a bit to increase more air flow. Finally I am clear to print using Shapeway =)

It will cost approx US$35 per design on top of the US$25 shipping =(

The entire process took me almost a month. Unfortunately I didn't send it for printing.
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at Monday, April 29, 2013
Probably my most copied home improvement...LOL

More than 12 years since I installed these glasses in the washroom, I still see funny people in my neighborhood coming to my house and do measurement.

Each glass is 10mm thick and it can withstand 10kg load. Not once any of the glass give way since it is installed.

Ironically if one is to get an Interior Designer to design just the 3 piece glass configuration in his/her bathroom, it will cost >S$3000 @@ (figure from news)

It just cost me <S$100 for the 8 piece of glass and its brackets.

Close up on the bracket. You can see a translucent siilcon sheet that acts as a gasket.
Normal set up is a 3 piece, each 12" apart. Good for liquid soap & shampoo.
This is what I put in the laundry bay. It is 18" apart. It can handle 10kg of detergent.
Here's how when you place near a sink. You cut a square piece.
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