Tuesday, March 8, 2011

TG3 BL82 mod

In december 2010 I received a used TG3 BL82 compact mechanical keyboard. It was in pretty bad shape but I didn't want to throw it out so I decided to completely renovate it.

The idea was to swap switches for Cherry MX Blue and along the way swap LEDs as well. I got the switches from a fellow geekhack.org member and bought the orange diodes on eBay.

TG3 really has nice and clean soldering. All soldering and desoldering was done at 275C. Since I haven't done anything like this before, it took me almost 7 hours just to desolder the switches and diodes! I estimate that I spent a total of ~14 hours working on the project. Additional time was wasted with desoldering new diodes which turned out not to be bright enough.

The last ingredient was the transparent case I got from Deck thanks to another geekhack member.

You can find more pictures here.

Monday, February 14, 2011

Flea Market Finds #7

No updates for a while but this doesn't mean I haven't bought anything!

Recent finds:
- Diablo (PC CD-ROM), jewel case
- Diablo II (PC CD-ROM), jewel case
- A502/16; 512kB memory expansion for the Amiga 500
- Nintendo Game & Watch Life Boat w/ box & instructions

Tuesday, February 1, 2011

Video HowTo: Cherry MX stem&spring swap

A switch is held together by four latches (two to each side). The video shows how you can pop the switch open in 3 easy steps. I did this with a french Goupil G80-1861 keyboard which originally used MX Black linear switches. A Cherry G80-1000 served as a donor for MX Blue stems and springs.

Goupil G80-1861 stem & spring swap from Bojan Kotur on Vimeo.

The end result:

Tuesday, January 25, 2011

HTPC Cooling

I finally got my hands on one Scythe 100x100x12mm slim fan. It turns at roughly 1000rpm and practically cannot be heard. It only moves 15 CFM which means that the PC now gets hotter than before - approximately 60C . This is quite alright as far as I'm concerned so I'll leave it as is (for now).

Friday, January 14, 2011

HTC Touch Diamond 2 problem

This phone has been nothing but trouble since I got it. The joy of owning a sparkling new phone lasted just about 2 days. My first problem was that from time the time the phone just couldn't be woken up without removing and reinserting the battery. This turned out to be a software problem which I fixed after a while.

My second problem is that the "SMS received" sound sometimes doens't play until I turn on the screen. What's that all about? Probably firmware related...

The third and biggest problem is that the receiver speaker is acting up and I sometimes can't hear a thing. This cold be due to a cold solder joint or it could be a bad speaker. Definitely something I can't solve myself so I'll have the phone repaired. Hope it doesn't last long.

Saturday, January 1, 2011

AT5IONT-I fanless? Forget it!

Last night we watched a full HD movie and were in for an unpleasant surprise. Just when the movie was about to end, the computer turned itself right off. I suspected overheating so I checked the temperature readings in BIOS and they were extremely high (79C)! To solve the problem I temporarily mounted a slim 60mm AMD stock fan above the heatsink. Since it doesn't cover the whole heatsink, a real solution would be getting a slim 100mm fan which I'm going to have to order from the UK.

Conclusion: The board obviously cannot rely solely on passive cooling, at least not in a slim desktop case. You will have to provide for adequate ventilation or face potential problems with overheating.