Posts in Category: Technology

Historic Harrisburg Website Redesign

I just recently launched a redesigned website for the Historic Harrisburg Association, a non-profit organization in Harrisburg, Pennsylvania. The redesign and launch solved many issues. The most important issue the website redesign solved was the fact that the previous content management system was not maintained and eventually lost functionality which brought the website down. The new Historic Harrisburg Association website is built on the WordPress content management system with the following features:

  • Event postings (with the ability for content managers to add, edit, and delete events)
  • Donations via PayPal
  • Event ticket purchasing with tiered pricing and quantities
  • Membership purchasing and renewal
  • Responsive theme that reacts to device browser dimensions

In addition to redesigning the website, I am also maintaining the website by monitoring the content management system and plugins for updates and security issues along with managing cloud-based backups.


If you have a similar project, contact me and let’s work together!

Roomba 440 Cordless Robot Vacuum Unboxing

I broke down and bought a Roomba, a robot vacuum. I’ve seen these Roomba robots appear on deal sites over the last few years and they always peaked my interest. Reading the comments and reviews on these gadgets I see some people say they are a waste of money and prone to issues. Yet other reviews praise these cleaning robots for their ability to clean floors while you carry on with your day.

The Roomba 440 came up on Woot and I decided to take the plunge and buy it. It showed up at my door a few days later.

Following is the un-boxing of the Roomba 440.








Finally, after a nice charge I set the Roomba 440 loose on my living room and dining room which consists of wood floors and a large area rug. The Roomba shipped with “virtual walls” which each take 2 C-size batteries. These “virtual walls” can be setup in a doorway which creates an invisible barrier in which the Roomba will not pass when enabled. I didn’t have any C-size batteries so I wasn’t able to test this feature.


The above photo shows what the Roomba 440 captured from my floors. Even though my dog Terry is of a non-shedding variety (cockapoo), he still leaves little tufts of hair around the house. The Roomba easily crossed the floors and under the dining room table cleaning hair and dust with ease.

Finally, here is my video of the Roomba cleaning my floor as Terry watches.

NASA Goddard Tour ‘n Tweet


Last week I had the privilege of a V.I.P. tour of the NASA Goddard Space Flight Center in Greenbelt, Maryland. It all started with a direct message from my friend Gene (@gbangert on Twitter). Gene and I had attended Yuri’s Night at NASA Goddard twice so far so he knows I’m a fan of NASA. I completed my registration for the event and waited to see if I would be chosen. I finally received the email that I was selected for the tour and quickly requested the day off work so I could attend.

Since the tour was on a Wednesday I decided it would be best if I drove down to Greenbelt, Maryland the night before and grab a hotel. That would allow me to avoid any traffic issues that could arise between Harrisburg, Pennsylvania and Greenbelt, Maryland on a workday morning. Luckily I found a hotel just a few miles away.


We all met at the NASA Goddard Visitor Center to start our tour. Above, Nina Harris (right) welcomes us and quickly remembers all of our names. Nina is a second-generation NASA employee.


We pass the time awaiting Dr. Jim Garvin for the Science on a Sphere presentation. Unfortunately, Dr. Garvin was stuck in traffic but made his arrival as soon as he could.


Dr. Garvin heads off the Science on a Sphere presentation.


A 3D view of our planet at night.


We begin our tour at Building 7. Nina explains that each building is numbered according to it’s age. Building 1 being the oldest, to the newest building which is in the upper 20’s I believe.


Inside we find employees working in a small clean room. I love this shot.


TIRS Satellite in the Spacecraft Test and Integration Facilities at NASA Goddard.

This facility contains cleanrooms for spacecraft integration and special chambers for environmental test of spacecraft. Thermal-vacuum chambers, a vibration platform, and an acoustic test chamber are located in this facility. There is also a full-scale model of the cargo bay of the space shuttle and a 4-story model of the Hubble Space Telescope.


The Space Environment Simulator was huge! One of the coolest devices I have ever seen. This is used to test satellites to see if they can withstand the temperature extremes of space. From 302 degrees F all the way down to -310 degrees F.

This three-story high thermal-vacuum chamber located in Bldg 10 features a 27-ft diameter by 40-ft high vacuum chamber capable of simulating temperature and vacuum conditions for virtually any satellite launch or orbit environment condition. This test chamber, recently upgraded at a cost of over $3M with 8 periphery-mounted cryopumps (to insure no test item oil contamination as is possible with diffusion pumps); a turbo-molecular pump (for chamber pressures below .00001 to .0000001-torr); and a new state-of-the-art MIMIC Control Panel for easy, safe, and reliable operation of the chamber. Shroud temperatures within the chamber can be controlled to -90 to +75C using gaseous nitrogen and to -180C with liquid nitrogen.


The High Capacity Centrifuge is used to test payloads to see if they can withstand the G-forces of a rocket launch. This device can test a payload up to 30 Gs. At this time the centrifuge is mostly used as a “closet” to store things. You can see the clutter sitting around the floor.


Employees are working on a way to refuel satellites in orbit which would extend their life. Once this is finished, they plan to make all of their research available to commercial opportunities which would bring down costs and find other uses for their research.


The Acoustic Test Chamber where a satellite is being prepared for audible testing.

It’s true that in space no one can hear you scream. Blastoff, on the other hand, can make quite a racket, which is why engineers use the Acoustic Test Chamber. In this 42-foot-tall chamber, technicians expose payloads to the noise of a launch with the help of 6-foot-tall speakers.

The speakers (more accurately called horns) use an altering flow of gaseous nitrogen to produce a sound level as high as 150 decibels for two-minute tests. That’s about the level of sound heard standing next to a jet engine during takeoff.

The speakers are still audible — at greatly reduced volume — outside the chamber, even through the insulation of massive metal doors.


The High Bay Clean Room (largest clean room in the world).


A wall of HEPA filters.

Before most Goddard spacecraft components are cleared for launch, they go through final checkups in one of many of the center’s clean room facilities. The largest, the High Bay Clean Room, can accommodate two space shuttle payloads at one time.

The High Bay Clean Room, often called the world’s largest, prevents dirt, dust and other contaminants from damaging spacecraft components, especially sensitive and carefully calibrated instruments. For example, unlike personal digital cameras, a smudge or speck of dust on the lens of a space telescope is extremely difficult — if not impossible — to clean, especially once the spacecraft reaches orbit a few hundred miles up.

A robust ventilation system and an entire wall of air filters help protect against these contaminants. The clean room ventilation system circulates almost one million cubic feet of air every minute through 9,000 square feet of HEPA filters located along one wall. The filters are not your typical off-the-shelf HEPA variety from the local home improvement store. These are specially designed to last several decades.


The Scientific Visualization Studio (SVS). This room consists 15 displays that are each run by a Linux system. Each system displays a video to the display and is in sync with every other system. All are served by a single Linux system that runs as a master. This allows for a huge visual display of data.

The Scientific Visualization Studio fosters scientific inquiry and outreach within NASA programs through visualizations (animations and artistic concepts based on scientific data). To that end, the SVS works closely with scientists in order to promote a greater understanding of Earth and Space science.

All the visualizations created by the SVS (more than 2,900) are accessible to the public. More recent animations are provided as MPEG-4s, MPEG-2s and MPEG-1s. Some animations are available in high definition as well as NTSC format. Where possible, the original digital images used to make these animations have been made accessible. Lastly, high- and low-resolution stills, created from the visualizations, are included, with previews for selective downloading.



More info on the tour can be found below: