Author Archives: Marlon Hernandez

Presentation: Hello, I’m Marlon. Configuration Management Engineer

Presented At: UNT Southern California Cohort 2017 panel discussion for SLIS 5000 – Information and Knowledge Professions.

Title: Hello, I’m Marlon. Configuration Management Engineer

Description: I participated in a panel discussion involving a wide range of  information professionals. I discussed my career path and how my MSIS in Information Systems and GAC in Digital Content Management helped me achieve my goals. The slides are fairly basic and lack much detail.


Presentation: Implementing WorldCat Discovery in 3 Weeks (give or take a few months)

Presented At: 2017 West Coast WMS Users Group Meeting, May 19th 2017

Title: Implementing WorldCat Discovery in 3 Weeks (give or take a few months)

Description: The JPL Library registered its Discovery URL last year but only recently went live with the platform. This presentation covers how easy it is rollout Discovery and how to best avoid putting off the inevitable.



LITA Post – Digital Displays on a Budget: Content

This post was originally published on Library & Information Technology Association (LITA) Blog


In my previous post I showed how we turned a Raspberry Pi into a digital display device by installing a Video Looper application. Now let’s take a look at how to fill that display with content. First, do yourself a favor and read fellow writer Leanne Mobley’s wonderful post on design resources for librarians. She provides a great overview of tools out there that can add some polish do your content and provide a starting point.

The focus of this post is how I used Microsoft PowerPoint to create the content for our Digital Displays. I went with PowerPoint as it met two major requirements: low cost and user familiarity. Like most projects I create, my aim is to be able to hand this off to another user and bring them up to speed quickly. By going with a program that is available on every system on lab, it reduced the headache of transferring licenses or vetting software that is platform neutral; as we have users on Mac OS and Windows. Additionally, there are tons of resources available online that can introduce users to PowerPoint, cover advanced topics, and a robust reference/support site.

With that said I’ll look at:

  • Availability – What versions of PowerPoint have export and where to get it.
  • Templates – Why they are important and how to create them.
  • Working in PowerPoint – Covering simple one slide movies and how to utilize animations to bring your video to life.
  • Raspberry Pi – Geared towards those using the Video Looper technique I covered in my previous post.
  • Fine Tuning – The importance of viewing on end device and being okay with tinkering.


While I do love that Raspberry Pi holds onto the dream of Libre Office, as this was my primary writing program while college, by now the Microsoft Office Suite has become the de facto productivity package, so most users should have access to a version of it. In order for this project to work you would need to have access to at least PowerPoint 2007, as this is when the video creation option was introduced. Unfortunately, PowerPoint web users (available through Office 365) will not have the video creation option.



Creating a new video from scratch each time can seem like a daunting task. Indeed, the first batch of videos can take up hours of your day. To reduce this added stress, I opt to create templates for each video category I have. In addition to making it easier to update for each new video, templates also allow your videos to maintain a consistent look, which is great for extending your existing branding. If your library or institution has a style guide, I highly recommend sticking to it to help reduce the amount of work.

For example, here is the New Book template I use:

It contains library information that remains static; the book cover and call number which are the most prominent features; and, to add some animation, I have book review quotes slide in every 20 seconds. The entire movie lasts one minute, which is plenty of time to digest each quote and not completely annoy patrons.


I use to create my templates, but really any design program or even PowerPoint itself can be used. The templates just need to be:

  1. Easily imported into PowerPoint
  2. Editable text and image areas
  3. Configured to house static information

The reason for #1, is that I like to make each template the background image of a slide. I have LucidPress export the template as a PNG and then, in PowerPoint, set that PNG as the slide background. Going back to the New Books movie, here is the background image I use.

For #2, we want the template to do the heavy lifting. It needs to show where the customized text boxes and images should go. Here is a workflow that works for me:

  • Repurpose: Start with a flyer from previous iteration of the category, such as a past event. This will give you a great starting point, as you will not have a blank page mocking your efforts.
  • Scrape the need-to-know information of category and try out a few placements and ideas. I clump bits of info together and move them around, while keeping the main image as centered as possible to keep it as the focal point.
  • Aim for a template that has as few editable sections as possible; when you have +5 areas you need to update for each new video, you really aren’t saving that much time with a template. Going back to the New Book template, for every new book I only have three sections to update: Book Cover, Review Quotes, and Call Number. It took me an hour to create the template and takes about five minutes to create a video for a new book. The template should let the user easily know where the custom text and image areas are.

Finally, #3 is about on making use of static information areas as this is the best way to utilize a template. For example, each of my templates has a section where I list the library’s Name, Website, and Email. This is partially done for branding purposes but it also prevents the slide from being too empty. With this static info in place I don’t have to shy from just using a single image and block of text. Additionally, static information can also include color schemes and category headers, which makes it much easier when figuring out how the rest of the image should look. Reuse any content that makes your job easier and lets users know that all of the slides in this video are connected.



Working in PowerPoint

Video Creation

What we want to do is have PowerPoint create an MPEG4 of the presentation, complete with timings and animations. If you already have a presentation that you think is ready for the big screen, you can try it out by simply:

  1. Click File
  2. Export
  3. Create a Video

PowerPoint will then create the video and save it to the selected directory. Depending on your computer’s processing power and the length of the presentation, you might want to give it a few minutes to process. Just keep an eye on the progress bar at the bottom of the screen and do not close PowerPoint before it completes.

Basic – Single Image Video

For simple displays, such as an event flyer, you can get away with making a single slide presentation with a set display time. Keeping things simple makes it much easier to update the slide for every new event. Pick images and titles that let you slim down the description. Did I mention Leanne’s design resources post is a great starting off point? Definitely check it out for places to find those eye-catching images and color schemes. Since I am using the generic library logo, I went with a simplistic color scheme for this Upcoming Event template:

As you can see, it has slots for just the facts; title, brief description, date, and time. I try to design flyers that are easily digestible. Here is the filled in template.


For these basic videos we can leave it as a one slide presentation and have it display for one minute. To do this:

  1. Click File
  2. Export
  3. Create a Video
    • Adjust the adjust the Seconds Spent on Each Slide option to 60.
  4. Create Video

The end result is a static 1-minute upcoming event flyer.


For videos that need to display a large amount of information, take advantage of PowerPoint’s animations and slides transitions. It can be a simple text box appearing after 20 seconds. Going back to the New Book template, I have each quote in a separate Text Box. Each box is set to appear for 20 seconds and disappear when a new one appears. This can be done by:

  1. Opening both the Animation Pane and Selection Pane. This makes it easier to select items:
    1. Animation Pane: Animation Tab -> Advanced Animation -> Animation Pane
    2. Selection Pane: Home Tab -> Editing -> Select -> Selection Pane
  2. Select Textbox 1
  3. Animation Tab -> Add Animation -> Appear
    • In the options panel, found in the Animation Pane, select Start After Previous
    • In the same options panel select Timing… and for Delay insert 3 seconds, or whatever you want the initial delay to be.
  4. Select Textbox 1
  5. Add Animation -> Disappear
    • In the options panel select Start After Previous
    • In the same options panel select Timing… and for Delay insert 20 seconds. This will make Textbox 1 disappear after 20 seconds.
  6. Select Textbox 2
  7. Add Animation -> Appear
  8. The file is now ready for video creation
    • File -> Export -> Create a Video
      • Adjust the adjust the Seconds Spent on Each Slide option to 1 minute.
    • Click Create Video

The end result is a 1 minute video with two textbox that appear 3 seconds and 23 seconds into the movie.

I use this technique to create videos that have multiple slides with varying bits of information on each slide, such as a How To for the 3D Printers or general information, like service desks available in the area and their hours of operation. As I said before, any flyer can be turned into a movie.

Raspberry Pi

Once you have your video all ready to go it is simply a matter of loading it onto a USB stick and starting up the Raspberry Pi. The Pi will detect the videos and play as usual. The Video Looper plays the videos in alphabetical order, you can use this to your advantage by using a file naming scheme to sets up the videos in a particular order. For example, I go with:

  • 01 – General – Welcome
  • 01 – New Book – Name of Book
  • 02 – Event – Summer Movie
  • 02 – New Book – Name of Book

As you can imagine, with that naming scheme the videos play in the exact order. This was particularly useful when the archives wanted to display three videos back to back.

Fine tuning

Finally, I have some words of advice culled from creating videos for the past few months.

Try it out, at least once. You won’t know how the video will turn out until you actually see it on the end device. I’ve had videos that look amazing on my laptop only to have the video show up with wonky colors or screwy text sizes. Before you throw out the video or mark it as done, load it up and even edited it on the fly while watching the video on the big screen.

Don’t be afraid to test out variations, even with a single change. This is similar to the first but you should not wait until you have a finished product. I have around 5 different versions of my “Welcome to…” videos that have large changes, such as fonts and colors, or just even a single line of text. I am not wedded to any video being the “Final” version and that is okay. It is an iterative process.

Listen to patrons and notice their movements. Like most user experience books teach us: it is valuable to see how your patrons interact with your displays. Some patrons will be vocal about the videos being too distracting, it is how I figured out I should avoid videos that last less than a minute. Others will simply continue to glance up at the screen at every video change, while it is great that they notice the videos it can also be a sign that it is distracting them from their work.

Thank you

Well that wraps up this two post look at how to create a Digital Display on a Budget. I hope there were at least a few takeaways for you.

This is also my final post for the LITA Blog, it has been an absolute pleasure sharing some of my experiences and projects. I’d like to thank my fellow writers for the wonderful experience, in particular the amazing Brianna Marshall for bringing me onto the blog. So long, and thanks for all the fish!

Presentation: Raspberry Pi projects at JPL Library

Presented At: Socal Code4Lib Quarterly Meeting, September 12th 2016

Title: Raspberry Pi

Description: Raspberry Pi projects I’ve tinkered with at the JPL Library. These include using Video Looper for digital displays and a  customizing a Patron Kiosk for a quick lookup of the JPL catalog .


Resources Discussed

Video Looper Install Instructions

Patron Kiosk –

Secure Shell (SSH) setup on Raspberry Pi, from –

Image Backups for Raspberry Pi, from –

Raspberry Pi Guides at


Note: The speaker notes contain details. Download a copy for full presentation.

LITA Post – Digital Displays on a Budget: Hardware

This post was originally published on Library & Information Technology Association (LITA) Blog



At the JPL Library we recently remodeled our collaborative workspace. This process allowed us to repurpose underutilized televisions into digital displays. Digital displays can be an effective way to communicate key events and information to our patrons. However, running displays has usually required either expensive hardware (installing new cables to tap into local media hosts) or software (Movie Maker, 3rd Party software), sometimes both. We had the displays ready but needed cost effective solutions for hosting and creating the content. Enter Raspberry Pi and a movie creator that can be found in any Microsoft Office Suite purchased since 2010… Microsoft PowerPoint.

In this post I will cover how to select, setup, and install the hardware. The follow up post will go over the content creation aspect.

Hardware Requirements


Luckily for us, this part took care of itself. If you need to obtain a display, I have two recommendations:

  • Verify the display has a convenient HDMI port. You are looking for a port that allows you to discreetly tuck the Raspberry Pi behind the display. Additionally, the port should be easily accessible if the need arises to swap out HDMI cables.
  • Opt for a display that is widescreen capable (16:9 aspect ratio). This will provide you with a greater canvas for your content. Whatever aspect ratio you decide upon, make sure your content settings match. This graphic sums up the difference between the aspect ratios of widescreen and standard (4:3 aspect ratio).

Raspberry Pi



There are plenty of blog posts and documentation that cover the basics of what Raspberry Pi is and what is fully capable of. In short, you can think of it as a mini and price effective computer. For this project are interested in its price point, native movie player, and operating system customization prowess.



There are three main iterations available for purchase:

Obviously I would recommend the Pi 3, which was just released in late February, over the rest. All three are capable of running HD quality videos, but the Pi 3 will definitely run smoother. Also, the Pi 3 has on-board Wi-Fi and Bluetooth connectivity, on previous versions this required purchasing add-ons and used up USB slots.

However, these prices are only for the computer itself. You would still need, at the minimum, an SD card to store the operating system and files, power adaptor, keyboard and mouse, and an HDMI cable. The only advantage of selecting the 2 is that there are several pre-selected bundles created by 3rd party sellers that can lower the costs. Make sure to check the bundle details to confirm it contains the Raspberry Pi iteration that you want.


Here are some recommended bundles that contain all you need (minus keyboard and mouse) for this project:

Keyboard & Mouse

Most USB keyboards and mice will work with a Pi but opt for simple ones to avoid drawing too much power from it. If you do not have a spare one consider this Bluetooth Keyboard and Mouse Touchpad. The touchpad is a bit wonky but it’ll get the job done and the portability is worth it.

Physical Setup

Getting the Raspberry Pi ready to boot is fairly easy. We just need to plug in the power supply, insert Micro SD Card with the operating system, and attach a display. Granted this all just gets to you a basic screen with the Pi awaiting instructions. A mouse, keyboard, and network connection are pretty much required for setting up the Pi software in order to get the device into a usable state.

Software Setup

The program we use is the Raspberry Pi Video Looper. This setup works exactly how it sounds: the Raspberry Pi plays and loops videos. However, before we can install that we need to get the Raspberry Pi up and running with the latest Raspbian operating system.

Installing Raspbian

Using personal SD

If you decided to use your own SD card, see this guide on how to get up and running.


If you bought a bundle, chances are that it came with a Micro SD Card pre-loaded with NOOBS (New Out of Box Software). With NOOBS we can just boot up the Pi and select Raspbian from the first menu. Make sure to also change the Language and Keyboard to your preferred settings, such as English (US) and us.noobs

Once you hit Install, the NOOBS software will do its thing. Grab a cup of coffee or walk the dog as it will take a bit to complete the install. After installation the Pi will reboot and load up Raspi-config to let you adjust settings. There is a wide range of options but the two that should be adjusted right now are:

  1. Change User Password
  2. SSH – If you want remote access, you will need to Enable to SSH. For more information on this option see the Raspberry Pi Documentation.

After adjusting the settings, the Pi will boot the desktop environment. Because the NOOBS version loaded onto the card might be dated, the next step is to update the firmware and packages. To do this, click on the start menu and select the terminal and type in the following commands:

  • sudo apt-get update
  • sudo apt-get upgrade
  • sudo rpi-update
  • sudo reboot

Once the Pi reboots we can continue to the next phase, installing the video looper.

Installing Video Looper

For a complete guide on installing and adjusting the Video Looper, see Adafruit’s Raspberry Pi Video Looper documentation. In short, the installation process is all but three terminal commands:

After a few minutes the install is complete and the Video Looper is good to go! If you do not have any movies loaded your PI will now display “Insert USB drive with compatible movies”. Inserting a USB drive into the Pi will initiate a countdown followed by video playback.

Using Video Looper

Now that the Pi is all set you can load your videos onto an USB stick and the Looper will take care of the rest.  The Video Looper is quite versatile and can display movies in the following formats:

  • AVI
  • MOV
  • MKV
  • MP3
  • M4V

If your Pi fails to read the files on the USB drive, try loading them on another. I had several USB sticks that I went through before it read the files. Sadly, most of the vendor USB stick freebies were incompatible.

Lastly, the Video Looper has a few configuration options that you adjust to best fit your needs. Of those listed in the documentation I would recommend adjusting the file locations (USB stick vs on the Pi itself) and video player. The last one only being relevant if you cannot live with the loop delay between movies.

Unit Install

IMG_20160706_072126                After the Video Looper Steup we can now install the unit behind the display. We opted to attach the device using Velcro tape and a 0.3m Flat HDMI cable. Thanks toe the Velcro I can remove and reattach the Pi as needed. The flat HDMI cable reduces the need for cable management . The biggest issue we had was tucking away the extra cable from the power supply, a few well placed Velcro ties. Velcro, is there anything it can’t solve?

Wrap Up

Well if you’ve made it this far I hope you are on your way to creating a digital display for your institution. In my next post I will cover how we used Microsoft PowerPoint to create our videos in a quick and efficient manner.

The Raspberry Pi is a wonderful device so even if it the Video Looper setup fails to live up to your needs, you can easily find another project for it to handle. May I suggest the Game Boy Emulator?

Presentation: Integrating local user data with WMS reports

Presented At: 2016 West Coast WMS Users Group Meeting

Title: Integrating local user data with WMS reports

Description: WMS provides a great snapshot of your user data, but what happens when that data has grown stale? In this presentation I show how the JPL Library Has used Microsoft Access in various data cleanup projects and how it can add new dimensions to stock WMS reports.



Note: The speaker notes contain details. Download a copy for full presentation.

Begin Transmission Interview

Lindsay Cronk recently interviewed me  for the LITA Blog. We covered a range of topics, from my motivations for pursuing a career in the library field to my techniques on answering obscure reference questions from the public. The entire process was amazing and I enjoyed every minute of the interview.

LITA Post – 3D Printer Handyman’s Toolbox

This post was originally published on Library & Information Technology Association (LITA) Blog

On this site, we have discussed how 3D Printers can enhance various aspects of your library’s programming and how to create important partnerships for implementation. Indeed, 3D Printers can improve the library experience for all involved. However, what happens when that printer comes to a screeching/beeping halt? After two years of maintaining our printers, Makerbot Replicator 2 and Tinkerine Ditto Pro, and thanks to the kind donations of library patrons, I have assembled a toolbox that has eased daily maintenance and disassembly.

The post is broken up into sections covering tools for the following aspects:

Each section also looks at pricing for these tools and alternatives.

Tools for: Plate


Not all of us can afford to wait for flexible platforms and we must make do with laying down some painter’s tape to ease the object removal. At first we would use standard-sized tape which would require about 8 strips to fully cover either platform. A few months ago someone graciously donated a roll of 3M ScotchBlue Painter’s Tape Superwide Roll that has made it just a two strip process:Tape

As you can see, the Superwide covers the majority of the Makerbot plate and a single strip of regular sized painter’s tape finishes the job.

Layout is also important. We place the thinner strip at the forefront where both printers clear their extruders before starting a print job. This allows us to replace the highly-used section of the platform at near daily intervals while the larger portion is only replaced when there is significant wear. This is also a cost saving measure as the Superwide variety can be nearly $50 per roll, and minimizing its replacement is vital. Utilizing this method allows me to stretch two rolls for four months, despite the printers actively printing out 3-4 jobs per day. If you are tight for funds, there is also 3DXTech’s XL Blue Painters Tape worth considering, which is half the price but with mixed reviews.


Both of our printers use PLA 1.75MM filament and while that does give some Scrapersflexibility in removing items from the platform, it can still be a pain to remove flat thin objects. Paint scraper to the rescue! At first we tried a cheap plastic scraper set (the red ones) but their edges were too soft. Upgrading to a metal 1.5 inch scraper provided much better results. While it does have a tendency to damage the tape, thus reducing the re-usability of said tape, it provided enough strength to wedge a gap in mere seconds. As for pricing, metal 1.5 inch scrapers can be found for less than $5.

Tools for: Fine Tuning Prints

For print jobs that required a bit of polish, we turned to three trusty friends: scissors, X-ACTO knife, and sandpaper.


The small scissor allows you to cut through thin pieces, such as supports or excess filament. The X-ACTO knife is called in for situations like stubborn raft pieces. Finally, the sandpaper can smooth out imperfections. Combined, all three will give your print a much finer look and prevent broken nails. Additionally, all of these pieces are easy to come by and should be no more than a few dollars each.

Tools for: Gripping

PincersThese tools are recommended for any situation that requires a delicate and firm grip. For the most part this occurs when small bits of filament are left in and around the extruder. In these situations we use a wide range of tweezers and pincers. These tools are easily found in any craft store or online. We found the flat head tweezers to provide the best grip on filament. Once again, these tools are quite affordable at around $3-5 each. Pick up one for now and add to your collection as required.


Tools for: Disassembly

The web will likely have an abundance of video and text resources on how to fix the exact issue for your printer. Avoid the temptation of these “quick fixes” first and check your manufacturer’s support site. I found quite a few answers to our Makerbot2 problems on their excellent support site. However, you should also be aware that the day will come when you will need to disassemble the magical device.

For the most part, 3D Printers come with everything you need. What they can lack are clear instructions on how to disassemble, let alone what tools you need, and even such great resources as fail to cover this vital maintenance aspect. It should be noted that the following tools are only needed if your warranty is already void. Some provider’s warranties will not even let you disassemble simple housing areas. Read those warranty guidelines that might be conveniently located in the bottom of the now discarded box, or on their support sites. All clear?

SCREWDRIVERS – Phillips & Flathead

Alright, so the first thing you want to purchase is a screwdriver set that contains Screwdriver_Seta variety of bit sizes. This allows you to tackle devices whose manufacturer decided that a different size was required for the shell, extruder, panels, board, and warning label. Again, you should really read any and all support documentation before attempting to use these tools. Our aptly named Precision Screwdriver Set, which covers 1.0mm through 3.0mm, has opened up a few areas on the machines. Just do a quick search on Amazon and find a set that fits your budget and needs, such as the $7 Herco HE826 Precision Screwdriver Set or $5 for the Stanley 66-039 6-Piece Set.


We also ran into areas, namely the extruder, which required a screwdriver with hex bits. BitsFor these advanced areas (did I mention you should really read those support documents?) we turned to the 54 Bit Driver Kit from’s store. This set also includes a flexible driver that made it easy to work with in the printer’s cramped areas.

The set is perfect for 3D Printers as it also contains flathead and Phillips bits of all sizes. It can easily cover the majority of your disassembly needs. At $25 it is definitely the pricier of the three sets but I highly recommend it due to the quality of the tools and the diverse sizes.

Final Cost

After all that, you are probably asking yourself: “how much is this going to cost me?” Let me break it down for you in a handy table.




3M ScotchBlue Painter’s Tape Superwide Roll


Metal 1.5 inch Scraper


Small Scissor


X-Acto #2 Knife


Flat Tweezer


54 Bit Driver Kit







3DXTech’s XL Blue Painters Tape


Metal 1.5 inch Scraper


Small Scissor


X-Acto #2 Knife


Flat Tweezer


Stanley 66-039 6-Piece Screwdriver Set




The contents and size of your 3D Printer Toolbox will come down to your needs and the model you use. I am allowed some freedom in dissembling our printers to fix small issues, like filament jams, and the high use of our machines means I am changing out the plate tape every few hours. Both of these requirements are reflected in the higher quality (and thus higher priced) emphasis of the plate and disassembly sections. You might find that your printer needs finer tweezers to reach certain areas and for other functions. A 3D Printer is a massive financial and time investment, so remember to save some funds to ease your interaction with them.

Building the ABV


The Archivist’s Beer Vault (ABV) is a database that I have worked on since my second semester at UNT. Initially it was just a simple beer database built using a fairly low tech software for SLIS 5200 Introduction to Information Organization. For my term project in SLIS 5707 Data Modeling for Information Professionals we were tasked to devise a multiple entity database and create it using Microsoft Access, with some hints of SQL. Converting the ABV into a multi entity database was a bit perplexing but once I figured out the entity-relationship diagram it was smooth sailing. Later in SLIS 5717 Dynamic WWW Control Structures, I learned about how to query SQL databases using PHP. Little by little more functions that I envisioned during my initial brainstorm for SLIS 5200 became realities. It currently stands as a mix of a fictional store front and a database with far more detail than presented. I am still figuring out how to best display certain data so elements like Distributor information are sitting idle. For now the only real functions are purchase and adding beers to the database.

There is more information about the structure and design of the database on the site itself and in the presentation below.



Screenshot - STYLES Welcome to the Archivist s Beer Vault



Presented at UNT LISSA’s All School’s Day 2015 event, this slide show contains a look at the development of the database and provides a complete site demo.