Christopher Merle

Que sera, sera, whatever will be, will be, but first I need more coffee.

Category: Technology (page 1 of 6)

Stand up for Net Neutrality

July 12 is the day of action, read more over at EFF.org who is dedicated to fighting for your online rights. There is absolutely no reason to create a two tier system for the internet for the haves and have nots. Back in the late 1990’s a lot fiberoptic cable was laid in this country and to this day  most of it is not being used. The real problem is the last mile problem that is getting the high speed connection from the internet backbone into the home. Infrastructure is a shared resource we all benefit from.

The internet backbone is the 21st century of the interstate highway system. The highway system is a great example of a public-private partnership.  We own our vehicles and our taxes pay for the roads that everyone can use. Now we have seen an increase in toll roads that are encroaching on that public road system. The internet backbone is mostly privately owned now, but in reality should be treated as a public utility just as the highway system is.

Net Neutrality like the highway system lets you access the internet regardless of whether you have a in expensive PC, a mobile device, or a top of the line gaming system. As a freelancer my work is dependent on the internet, and small business it the main job creator not big business. If I had to pay more to access the internet and my clients too they would have less incentive and not participate fully in our vibrant economy which would no longer be vibrant without our active participation.

It is also vital for free speech and is as much a First Amendment issue. The internet is now without it’s dangers and predators, but we with net neutrality active and tech savvy citizens can spread the word easier to help protect their families and communities.

Raspberry Pi Print Server

We have two printers in our house, an old Brother laser printer and a newer HP color laser printer. The newer printer has built in wifi and we can print via wifi directly or through the home wifi network. I did have a Raspberry Pi print server set up and working with my old Pi (model B version 1)  and could print via wifi on it. I recently purchased a Raspberry Pi Zero and wanted to set it up as a print server.  Install the following packages:

 sudo apt-get install cups

and then configure user pi

 sudo usermod -a -G lpadmin pi

[Note– It is recommended that you change the default password of pi to something more secure or replace the pi user with another user name  with a strong password as I did for better security]

I have a Brother HL-2140 and you can get the Linux drivers from Brother
http://support.brother.com/g/b/producttop.aspx?c=us&lang=en&prod=hl2140_all

However, it turns out they don’t work on the Raspberry Pi as it uses an ARM chip to run it’s flavor of Linux and not an i386 based Linux, so you’ll need to use HP’s HPIJS driver – PPDs for compatible PCL-5e-based non-HP laser printers

https://www.openprinting.org/driver/hpijs-pcl5e

You can select your printer in this case the Brother HL-2140 and it will generate a PPD file, but it won’t on it’s own as you’ll need to install the follow packages.

 sudo apt-get install hpijs-ppds printer-driver-hpijs

You’ll need to add the driver via the browser. Go to localhost:631 or whatever the IP address is on your network to access the CUPS web interface. Connect the printer via USB to the Pi. Speaking of USB, I recommend getting a Zero4U 4 port USB hub which piggybacks onto the Raspberry Pi Zero in this case v1.3. Make sure which Zero version you have to get the right hub.

http://www.uugear.com/product/zero4u/

I also purchased a case, a wifi dongle, and a mini-HDMI to HDMI cable. I had a USB keyboard, USB mouse, and monitor with HDMI to connect to the Pi Zero Once you have the Pi Zero configured and connected with a wifi dongle and the IP address you’ve assigned it.

My next step is to get a short USB cable and a way to secure the print server to the printer, probably a velcro strip or something.

How much did it cost? The Zero costs $5, but I needed a power supply ($8), wifi dongle ($12), and SD Card ($10). I paid about $18USD for the Zero4U USB hub, plastic case and shipping from the Czech Republic. I’m not counting the other accessories I bought (mini-HDMI to HDMI cable) or needed (USB cable), but just for the making the print server itself it cost about $53. I’m going to leave out the countless hours of frustration getting it to work because I couldn’t get CUPS to work on the Zero to print. It would talk the printer. I could see it try to do something but nothing would happen. It wasn’t until I got the hpijs packages installed that I was able to get it to print. I’d set up CUPS before on laptops. When I started this project wireless print servers were a little more expensive, but I just found one on Amazon for $40. So I didn’t save any money, and I wasted a lot of time getting it to work. So if you just need a wireless print server for an old laser printer, then just buy one, but if you are into Raspberry Pis then this is what I did.

Podcasts Archive

Thanks to the new features of WordPress I don’t need to use PodPress plugin anymore. You can check them out under the Podcast parent page in the menu across the top. I do not have an active podcast. This is an archive of a two podcasts, one I did for a now defunct science fiction convention, the other was related but not not tied to any convention. They were recored between 2006 and 2009 and are there for posterity.

I need to some additional cleanup and rearrangement of this site, but I’ve made a good start.

Site Cleanup

I tried and failed to update my site to WordPress 4.6. I did update it by uploading 4.6 files via FTP. It overwrote all the bad files and now the site is running again, but I noticed my admin is slow. I’ve deleted a number of outdated plugins. I’m in the process of deleting other material as well. I’ve deleted my photo pages, and once I download all the pictures I’d uploaded I’ll be deleting the gallery plugin. It’s not needed anymore. I plan to keep my archived podcasts, but I’ll see If I can reformat them in a way to not use the podcast plugin.

Nothing to Report

Well, I do have a Raspberry Pi now. Got it at PyCon 2013. Took a bit of effort to get it on the Wifi but that’s all over now and it works great. Need to play with it some more, and figure out what to do with it.

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