tech.faħmu.net http://fahmu.net/tech Technological Stuff Sun, 25 Dec 2011 01:20:47 +0000 en hourly 1 http://wordpress.org/?v=3.2.1 iPhone 3GS Battery Replacement http://fahmu.net/tech/?p=129 http://fahmu.net/tech/?p=129#comments Sat, 24 Dec 2011 20:08:15 +0000 admin http://fahmu.net/tech/?p=129 Just did a battery swap on my iPhone 3GS using parts and guides from iFixit. I recommend buying their recommended #00 screwdriver, spudger, suction cup in ADDITION to the screwdriver and spudger that come with the battery- found them useful. Here’s a stop motion video.

3GS Battery Swap Video

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CTR-35 tearapart http://fahmu.net/tech/?p=130 http://fahmu.net/tech/?p=130#comments Tue, 26 Jul 2011 19:19:18 +0000 admin http://fahmu.net/tech/?p=130 I wanted to know what was inside…

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ctr35 login bookmarklet http://fahmu.net/tech/?p=126 http://fahmu.net/tech/?p=126#comments Fri, 08 Apr 2011 22:23:52 +0000 admin http://fahmu.net/tech/?p=126 (Note: You can’t test this out from here because of the XSS filter, just doing its job. See http://pastebin.com/k5eePA7R for the source and the same explanation.)

The following link: ctr35login

…is a bookmarklet that will login to your Cradlepoint CTR35 router. I found that I can save it as a bookmark, and then access it from my iPhone via synced bookmarks. Easier than typing in the password everytime. Note, that you will need to replace YOURPASSWORD with your password, unless of course your password is ‘YOURPASSWORD’ in which case, it shouldn’t be.

If you have trouble, view the source of this post, save the relevant HTML off to a file, and modify the password there. One could replace ‘cp’ with the router’s IP, for example.

Thanks to StackOverflow for the initial idea of using a dynamic form.

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Smoothie wrench http://fahmu.net/tech/?p=125 http://fahmu.net/tech/?p=125#comments Thu, 03 Mar 2011 20:51:42 +0000 admin http://fahmu.net/tech/?p=125 Problem: bottom of Bosch blender won’t open.

Solution: hardware tape and bolts.

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Table Stilts http://fahmu.net/tech/?p=121 http://fahmu.net/tech/?p=121#comments Fri, 24 Dec 2010 17:07:46 +0000 admin http://fahmu.net/tech/?p=121 Problem: card table lower than main table. Extra seats needed for Christmas feast.

Solution: 4×4 cut to length, with hole drilled several inches depth to provide a sturdy base, and rubber foot at bottom to prevent skid.

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Magic cap datarover 840 http://fahmu.net/tech/?p=111 http://fahmu.net/tech/?p=111#comments Tue, 31 Aug 2010 02:28:02 +0000 admin http://fahmu.net/tech/?p=111 Briefly powered up the magiccap datarover- hoped it would make a callerid speakerphone. Ended up not supporting callerid and not working great as a speaker phone. Maybe it will come back as a desk phone in the future.

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Video/Audio mount http://fahmu.net/tech/?p=99 http://fahmu.net/tech/?p=99#comments Tue, 25 May 2010 00:03:57 +0000 admin http://fahmu.net/tech/?p=99 Before:

Blue Lines

After:


More pictures of video/audio mounting in my photoset

More pictures of video/audio mounting in my photoset

LCD panel: Vizio
LCD mount: Barkan
HDMI over Cat5: Unknown brand, from Central
IR remote control: Impact, from CablesToGo

So, running through the wall are a small cable for the IR remote, and two Cat5 (Ethernet-type) cables for HDMI. These all run to the AppleTV in the closet on the other side of the wall. Now we can control music/movies from the iPhone remote, or using the IR remotes which feed the AppleTV and the stereo receiver (amplifier).

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Wedding Streaming http://fahmu.net/tech/?p=89 http://fahmu.net/tech/?p=89#comments Wed, 28 Apr 2010 16:21:15 +0000 admin http://fahmu.net/tech/?p=89 Folks have asked how we did our wedding stream. Well, I’ll tell you.

Streaming Test at Rehearsal
(More pictures on Flickr)

First, here are the raw ingredients:

  1. Something to stream.
    • I used a yellow rubber duck as a test subject. The ultimate goal, of course, was to stream a wedding.
  2. A way to get video into the system:
    • For testing, I connected a DV Camcorder directly into my Mac.
    • For the actual wedding, we used a wired feed from the church’s existing remote camera/switcher into a Canopus AVDC-100, a slightly older but high quality S-VIDEO to DV (firewire/i1394) capture device.
    • One could use a USB (or firewire) webcam also, but beware of distracting autofocus.
  3. A way to get audio into the system:
    • Ideally, you would use the audio component of the video input. The Canopus box, for example, supports locked audio, where the audio is synchronized exactly to the video in the firewire stream.
    • If you are using a DV camcorder (or USB/firewire webcam) it may have its own audio source.
    • However, there was/is a bug where Flash for Mac couldn’t handle DV audio without crashing. So, I ended up using the “Audio In” input on the mac, and later a separate USB Microphone, to work around this. And, in the case of the USB Microphone, to provide better audio input for a mobile/handheld operation.
  4. A service (server) to stream the video.
    • I used ustream.tv – it worked quite well, and in the free mode shows only minimal ads. There are probably other services out there.
  5. Don’t forget a network connection!
    • I used the church’s ethernet connection in these two cases (including our own wedding).
    • I used my verizon EVDO modem as a back-up.

Now, let me give some recommendations.

#1 Have an outside contact. Find someone who is willing to be online during the rehearsal and wedding, and (if applicable) to be the “moderator” for the live chat.

#2 Test, test, test. This one bears repeating. Test at home with a rubber duck. Test early on the day of the rehearsal (by streaming to someone actually , to see if it works at all or if you need to run out to Radio Shack for the elusive “one more connector”. Test by streaming the entire rehearsal to someone (not everyone!!). Start the stream early at the wedding, to see if everything’s working.

#3 Check your bandwidth and connectivity. Make sure to test throughput, and be aware of bandwidth/transfer limitations on your plan or device. One friend’s wedding I wasn’t able to stream because even though there was a connection through either Verizon and AT&T modems, but the available bandwidth to the server wasn’t enough to support streaming. So, it was a wedding that wasn’t streamed live. Some of this you won’t know until you get to the site.

If your streaming service lets you make choices on video/audio bandwidth vs quality, you might tune those for yourself and your viewers. Decide your tradeoffs for audio vs video. Don’t send more data than your stream/service provider can handle. Don’t send more data than is comfortable for your viewers ( on cable, DSL, dial-up, …??).   

#4 Consider audio quality. If you can get a feed from the sound mixing board, that’s going to give better sound than through a camera microphone, but you need to make sure the input level is good- not too high to overdrive, not too low to be inaudible.

#5 Decide who the audience is. Are you going to stream for a few friends? For anyone who happens by? Are you going to post the stream on the web such as on a blog post? If so, does the video player embed properly?

#6 Only have a public online chat if someone will moderate. Don’t let the wedding stream turn into a free-for-all if it has public access.

#7 Have backup plans. If possible, have a couple of ways to get online, maybe a couple of different computers to use.

#8 Enjoy the wedding! You’re at a wedding! It might be more important to sing along with the hymns and watch the bride’s entrance, than to check on the latest viewer stats. If it’s important, get someone off-site to be the “concierge”, hosting the chat, fielding technical questions, etc. It might be good to have a non-family member non-friend actually running the stream during the wedding, if possible. But, it’s definitely possible to enjoy the wedding even from behind the console.

If anyone has more questions, feel free to post a comment here, and I’ll try to reply.

See more pictures on my Flickr photostream

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Canon EFS 18-55mm lens rebuild http://fahmu.net/tech/?p=93 http://fahmu.net/tech/?p=93#comments Wed, 28 Apr 2010 15:46:22 +0000 admin http://fahmu.net/tech/?p=93 I rebuilt my sister-in-law’s Canon EFS 18-55mm autofocus lens which had a bad run-in with a tree. I suspect the tree was OK, but the lens wasn’t quite as happy. It was ‘bent’ to one side, and couldn’t zoom or focus at all. It turned out that it was off the plastic ‘tracks’ inside. The surgery was a success and it is back in use today. The only casualty (besides some hair-raising moments) was that the manual focus component stopped working- I damaged or didn’t reassemble the “clutch” correctly.

canon af lens
See the entire set on Flickr

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Site update http://fahmu.net/tech/?p=94 http://fahmu.net/tech/?p=94#comments Wed, 28 Apr 2010 14:47:40 +0000 admin http://fahmu.net/tech/?p=94 Looks like I deleted some of the photos from previous posts. I’ll try to recover those, sorry.

Look for a few more posts on this site.

Also, our family blog has some more tech-related posts.

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