The last couple of weeks I’ve been busy building a Raspberry Pi 2 Raspberry Pi 3 connected to my Trimble GPSDO using the 1 PPS output. The Trimble unit synchronizes with the atomic clocks onboard the GPS satellites, and the precision is fantastic! I bought the GPSDO to get a 10 MHz lab reference for my measure equipment, but after reading an article about Time-Nuts, people obsessed with measuring time as accurately as possible, and one of my friends showed me pictures of their new Stratum-1 NTP server rack he helped design, I was hooked.
Why should I trust Google Services?
Official Blog: A second spring of cleaning:
We launched Google Reader in 2005 in an effort to make it easy for people to discover and keep tabs on their favorite websites. While the product has a loyal following, over the years usage has declined. So, on July 1, 2013, we will retire Google Reader. Users and developers interested in RSS alternatives can export their data, including their subscriptions, with Google Takeout over the course of the next four months.
I don’t get it. So they count heads, and see that not as many people use Google Reader as they’d like. But the only people I know that use RSS on a daily basis are the one that counts. Bloggers, journalists and tech leaders. You know, the people that write and influence the rest of the heard. How can you not make money on the data Google gets by their reading habits? You want me to have to spend all day reading assorted ramblings on Google+ or Twitter to find some nuggets? I don’t have the time for that. [Read more…]
Raspberry Pi as a Squeezebox Logitech Server
I love my music playback setup that consists of a couple of Squeezebox V3 players in different rooms so I can listen to music in lossless format wherever I am in the apartment. With the iPeng HD app on my iPad, I have a nice interface for controlling the players with album art and other nice features. But the best part is that I can playback high resolution audio directly on my iPad using the Camera Kit USB adapter and an HRT HeadStreamer DAC portable USB headphone amplifier. But I wanted a small, cheap and eco-friendly server for hosting my music files and wondered if I could use the Raspberry Pi. And here’s my findings.
Ubuntu Server WordPress with W3 Total Cache install
Initial installation Ubuntu Server
Last time I configured my web server with Ubuntu Server, I had problems finding all the instructions on what and how to install everything needed to get a WordPress blog with W3 Total Cache, CDN, Apache2 MPM Worker and fcgi working. So this is my attempt to write down the steps needed to get the server going. You might find it of interest if your needs are similar to mine. Here’s the requirements for my WordPress blog.
- Apache MPM Worker threaded version
- APC PHP Opcode optimizer
- All the required modules for W3 Total Cache
- Graphics libraries for Mint statistics
vsftpd on Ubuntu server 530 login incorrect error – fixed
When setting up my new web server I had a problem when installing vsftpd on Ubuntu Server 12.04 LTS. After doing the sudo apt-get install vsftpd and enabling login for local users, I got a “Server 530 login incorrect error” when trying to connect with a local user. The settings for disabling anonymous login and allowing local users where set in /etc/vsftpd.conf.
[cc lang=”bash”]anonymous_enable=NO
local_enable=YES
write_enable=YES[/cc]
But the ftp server still refused to let me login with any of the users on the system. I tried remove and reinstall, but the problem persisted. Finally I found a thread where others had the same problem. And here’s how to fix the problem.
[cc lang=”bash”]
sudo apt-get remove vsftpd
sudo rm /etc/pam.d/vsftpd
sudo apt-get install vsftpd
[/cc]
This fixed the problem for me. The only reason for me to have an ftp server on my machine is to do automatic updates of WordPress. The machine is behind a firewall so port 21 is not open to the world. For file upload I use sftp.