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2016/08/18

Raspberry Pi 3 as Time machine

The Raspberry Pi 3 + external 4TB drive setup, originally I tried to set it up as Plex server. And the CPU is just not powerful enough.

I decided to convert it to a NAS for Time machine purpose.

Follow this post to install netatalk and other related setup.

Note that it's wrong info about afp configuration (Edit the file /etc/afp.conf) section.

To configure afp, you should edit

sudo nano /etc/netatalk/AppleVolumes.default

, as stated in this post (File sharing with OSX).

To share the storage with Window machines, install samba.

2016/08/14

Raspberry Pi = Plex + NAS server

update: So far the Raspberry Pi 3 is not powerful enough for me. It takes several minutes for a movie to start streaming a mp4 file to ATV in the same LAN. It just not good enough, yet.

My mac is getting old, can't work on it as CPU go up to 100% while family is watching.

The plan is to move the Plex server to Raspberry Pi. It should be a economical replacement for the media function.

The solution seems mature, references can be found easily. I ordered the new board, prepare the SD card, and format my 4TB external USB drive to ext4 format. As the board arrives, I will get my hand dirty and note the process here.

References:

2016/07/27

Phidgets 1048 on OSX

I got the Phidgets 1048 temperature sensor to hookup Roastmaster app and Quest m3s roaster.

The plan is exactly like Raintroy suggested. You would install the old OSX driver (2.1.7.20140227) on a mac. The board is powered by the computer via USB. The iPad is connected to the same wifi as the mac. From there, Roastmaster app can read from the sensor via web service.

Using a 2 years old driver doesn't sound to exciting to me. And yes, it bring trouble to the setup. As you complete the driver install, the testing program would show Attached: Nothing.

To fix the bug, you need to make sure:

1. Install latest phidgets driver (and than override it by install the old driver required by Roastmaster)
2. Make sure Java using mac's original:

$ java -version
java version "1.6.0_65"
Java(TM) SE Runtime Environment (build 1.6.0_65-b14-468-11M4833)
Java HotSpot(TM) 64-Bit Server VM (build 20.65-b04-468, mixed mode)

Both Apple and JDK have the instruction:

Hopefully the info helps if you have the same problem.

Other references:
Phidgets OSX doc:
http://www.phidgets.com/docs/OS_-_OS_X#Quick_Downloads

2016/05/20

Aeropress 愛樂壓創辦人演講

重點：

the longer you brew, the bitter it get. 泡越久就越苦。
水溫：中焙或深焙：175℉ (80℃)；淺焙：185℉ (85℃)。
咖啡粉刻度：粗細依個人喜好(可細到expresso，或一般手沖刻度)，建議espresso刻度或fine-drip。
水量：兩匙咖咖，沖到刻度二。
攪拌：count to 20，大約10秒。
不建議水加滿，會太苦。
aeropress咖啡冠軍得主大部分用正向沖法，不用inverted method
他是喝深焙的。

最後來看一下2014 Aeropress冠軍：

2013/10/24

SVN 1.8 on OSX 10.9 (Mavericks)

This post is about how to compile the latest SVN source (1.8.3) on OSX Mavericks (OSX 10.9).

References

Sam's Updating to SVN 1.8 for Mac OSX 10.8. This is about building in OSX 10.8.

Requirement

Xcode command line tool: can be download at Apple's dev center or install command line tool without Xcode.
Setup the Tool chain: sudo ln -s /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/ /Applications/Xcode.app/Contents/Developer/Toolchains/OSX10.9.xctoolchain The key is to link the toolchain to reflect new version # of Maverick, which is 10.9.
The SVN source: can be download form Apache SVN project.
Here's straight way in command: cd ~/Downloads/ curl -o subversion-1.8.3.tar.gz http://archive.apache.org/dist/subversion/subversion-1.8.3.tar.gz tar -xvf subversion-1.8.3.tar.gz

Build and Install SVN

Build serf

First we will need to build serf, included in the subversion package.

cd ~/Downloads/subversion-1.8.3
sh get-deps.sh serf
cd serf/
./configure
make
sudo make install

Build SVN

Go back up to the SVN source root, and build it using serf. Depend on your hardware, it might takes awhile. If you need a coffee, this is good time to do so once you start the make.

cd ..
./configure --prefix=/usr/local --with-serf=/usr/local/serf
make
sudo make install

Wrap it up

Now you've the new SVN 1.8.3 installed at /usr/local/bin. Make sure your path includes it. From there you should able to: svn --version And here you go:

svn, version 1.8.3 (r1516576)
   compiled Oct 24 2013, 02:38:35 on x86_64-apple-darwin13.0.0

Copyright (C) 2013 The Apache Software Foundation.
This software consists of contributions made by many people;
see the NOTICE file for more information.
Subversion is open source software, see http://subversion.apache.org/

The following repository access (RA) modules are available:

* ra_svn : Module for accessing a repository using the svn network protocol.
  - with Cyrus SASL authentication
  - handles 'svn' scheme
* ra_local : Module for accessing a repository on local disk.
  - handles 'file' scheme
* ra_serf : Module for accessing a repository via WebDAV protocol using serf.
  - using serf 1.2.1
  - handles 'http' scheme
  - handles 'https' scheme

2011/08/26

Undelete in Linux (ext3 file system)

I accidentally wide out my 200 and some gigabytes of mp3 (again) by rsync'ing between bad disk. Luckily I found this undelete program and recover most of them.

http://extundelete.sourceforge.net

Also check out this great article if you're techie: http://carlo17.home.xs4all.nl/howto/undelete_ext3.html

Install BootCamp 4.0

If you upgrade to Lion from Snow Leopard + Win7 bootcamp, you might find that you can't download new bootcamp 4.0 from Bootcamp Assistant. The way I go around it is by downloading it from Apple's CDN:

Download Bootcamp 4.0 Drivers, here's a link on some Apple CDN for the .pkg file containing the drivers (603MB): http://bit.fosk.it/bootcamp40
Open this file with 7Zip in Windows, and go through a few layers to extract BootCampESD.pkg\Payload\Payload~\.\Library\Application Support\BootCamp\WindowsSupport.dmg\0.Apple_ISO
Rename the file from 0.Apple_ISO to BootCamp4.iso
Extract the iso with 7Zip to a folder.
Open command prompt and navigate to the extracted folder, for example:
E: cd WindowsSupport\Drivers\Apple
From the prompt in that folder, run msiexec /i BootCamp64.msi

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