Show Posts - Pisami

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Topics - Pisami

Project development, ideas, and suggestions / Re: Toslink - spd/if audio

March 03, 2012, 08:33:03 am

I'm pretty sure there are lots of them... I googled for them, but didn't find schematics or so. If you plan to do a open hardware project, I'd probably buy one. (Kit preferred, at least the smd parts ;) )

Project logs / Teardowns

January 25, 2012, 12:46:21 pm

I want to share pics of my electronics teardowns. They are not the most detailed or finest quality, but I hope you find them interesting.

Most, if not all of the pics are hosted on my Flickr account, but if you know a better way to host them, let me know. I chose the Flickr, because at my opinion it wasn't so PITA as most others I knew at the time. I've been thinking of hosting them myself (by turning my Seagate Dockstar to a server?), but I'm not sure about that yet.

I'd like to hear your opinions whether to include the images on the forum or just the links to them?

#1: Mobira Power supply and Lead Battery -- From really "mobile" phone
http://http://www.flickr.com/photos/kuvakkeet/sets/72157629024140339/

Project logs / I need help to fix an old PSU

January 13, 2012, 08:52:59 am

I bought an really old (1988 or so) PSU from second hand store. It is a 13,X VDC 5A PSU for Mobira "mobile" telephone :D When I plugged it in, it only gives one volt or so, and screams with high freq. I don't even know what component it is that is screaming, some short circuit protection I guess. (My dad has similar PSU and it keeps the same noise when shoted, but it works...)

Image (more available on request):
http://http://farm8.staticflickr.com/7032/6688609081_aeccc3a02e_b.jpg

General discussion / New tools

December 13, 2011, 10:31:14 pm

Hi! I thought that it would be nice to see what kind of equipment people use. I got today a new soldering station and el-cheapo-dremel. If you like, please post some images/comments of your tools :)

Project logs / MP3 player earmuffs

March 06, 2011, 03:11:35 pm

This is one of the first projects I have ever made. I have partially broken radio earmuffs (radio doesn't work well) and partially broken mp3 player (vol-up smd-button missing). One day I decided to join them. I don't have pictures yet and it maybe won't be pretty, but it it works, I'm happy.

I don't have any idea what buttons I should use to control the player. I looked through Digikey catalog and it didn't help. There are so many choices and I only need few normally open, somewhat waterproof buttons which are easy to mount on curved plastic. I looked at Dealextreme too, but they seem to have only clicky flashlight switches.

If someone knows what to seek for or where, it helps a lot.

USB Infrared Toy / Is 3.3V UART possible with IR Toy?

October 26, 2010, 04:28:22 pm

Hi! I need a 3.3V serial port, and IR Toy has one. I tried to look from PIC manual and everywhere, but found nothing interesting. Then I measured 5.0V between TX and GND. Is there a software way to use 3.3V logic level or should I try something else?

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