Wednesday, May 29, 2024

Gmail Plus Addressing and Dot Addressing

If you have a Gmail account, you can take advantage of a feature known as plus addressing. Plus addressing, as the name implies, allows you to append a plus sign, followed by any series of letters and/or numbers, to your email address. This can come in handy if you want to determine who is sharing your email address or if you want to create special rules to route emails to different folders in your inbox.

For example, if your email address is JohnSmith@gmail.com and you are signing up for an account at Company123, instead of providing your regular email address, you can provide JohnSmith+Company123@gmail.com. All emails with plus addressing will still be sent to JohnSmith@gmail.com. However, if you later receive spam emails with that plus address, it will be obvious that Company123 shared your email address with them.

As another example, you can use plus addressing along with Gmail filters to automatically apply labels or to categories your emails. Let’s say that you want to add your name to the email distribution list for your child’s elementary school. You could submit JohnSmith+Elementary@gmail.com as your email address and then create a filter (or category) as shown in the next 2 images.


Perhaps a lesser known but related feature is dot addressing in which you have the option to add periods anywhere in your email address. Periods in Gmail addresses are simply ignored, so you can add any permutation of periods such as John.Smith@gmail.com or J.o.h.n.S.m.i.t.h@gmail.com. The same filters and categories can be applied to your dot addresses.

Read more in this Gmail blog. Have you found other uses for Gmail plus addressing or dot addressing? If so, let me know how you’ve taken advantage of these features.

Wednesday, May 22, 2024

Eleven Table Tennis Player Statistics

Did you know that you can track your Eleven Table Tennis (ETT) player statistics online? The statistic that is likely of most interest to most ETT players is their Elo rating. Other statistics of interest may be their historical match results and recent wins and losses. While you can view these stats in the VR game itself, there are also 2 websites that I know of where you can browse these stats.

The first is the official Eleven VR website where you can view the global leaderboard and individual user profiles. Here’s my Eleven user profile: https://elevenvr.net/eleven/903406.

The second is 11ClubHouse which has most of the features of the official Eleven VR website but also features the ability for the community to comment on each player in terms of friendliness (via the Fair-play-o-meter) and a guestbook where players can leave feedback on other players. Here’s my 11ClubHouse user profile: https://11clubhouse.com/903406/.

As you can see, after seemingly hitting a plateau, a few days ago I just reached an Elo of 2100 for the first time ever. I don’t know if I just had some fluke victories or if I’m really improving, but to me the wins and losses and Elo ratings are less important than just playing and having fun. Hope to see you in ETT!

Thursday, April 11, 2024

Capturing a Total Solar Eclipse

I was fortunate enough to experience the 2024 Total Solar Eclipse from Carmel, Indiana. While I was able to view the eclipse through my eclipse glasses, I also brought various recording devices to capture my surroundings from multiple perspectives. This blog entry provides some information about my setup.

Location, Location, Location. The first consideration, aside from being in the path of totality, was to determine the exact location from where I’d view the eclipse. I decided that in addition to directly recording the sun itself, it would be interesting to record the office building where I work—right before, during, and right after totality. From the parking lot (pictured above), I was able to get a good angle of the building, free from obstruction, as well as an unobstructed view of the sun.

Timing. For most people, an approximate time for the start and end or totality would suffice. Most eclipse viewers simply need to arrive before totality and might snap a few photos and videos to commemorate the event. I was slightly more constrained because I needed to ensure that I had sufficient storage space on my memory cards as well as battery life to capture my intended footage. To determine the precise start and end of the partial and total eclipse, I used the US Navy Solar Eclipse Computer. I grabbed GPS coordinates from Google Maps and entered them into the Solar Eclipse Computer but had to truncate them after 4 decimal places. I made sure to arrive shortly after the beginning of the partial eclipse which would give me an hour to get situated, look around, and set up all my equipment to prepare for totality.

GoPro. One of my recording devices was my GoPro HERO7 Black which I simply affixed to a 3D printed mount and placed on the hood of my rental car since it was one of the only objects above ground level. The purpose of the GoPro was to record a video of the office building and produce a timelapse video immediately before, during, and immediately after the 3.5 minutes of totality. I wasn’t able to attach the mount to anything, and despite there being a slight breeze, I was fairly confident that it would not move around during recording. Given my familiarity with my GoPro’s battery life, I began recording about 10 minutes before the onset of totality, as I was confident that I’d have more than enough RAM and battery life to capture all of totality and several minutes afterward.

Drone. My 2nd recording device was a DJI Mavic Mini. Its purpose was also to obtain a timelapse of the building but from a higher perspective. Approximately 7 or 8 minutes before totality, I flew the drone to 18 meters (59 feet) altitude, according to the flight data, and started recording. I simply allowed the drone to hover for the entire duration. While the drone stayed put for the most part, the 10x timelapse shows what looks like noticeable movement of the drone in all 3 axes which gave the building a “rubbery” appearance. I don’t know how much of this movement was due to the wind. In any case, I was happy with my timing, as the battery lasted through totality and plenty of time thereafter.

Camcorder. My 3rd recording device was a Canon VIXIA HF M301 camcorder with 15x optical zoom capabilities. Along with my eclipse glasses came a camera filter which was probably intended to be used with mobile phones, but the diameter of the filter was sufficient to cover the entirety of the camcorder lens. I used 2 pieces of clear tape to attach the filter to the camcorder so that it fully covered lens. I mounted the camcorder to a portable tripod and placed the tripod on a folding chair, mainly for the purpose of elevating it off the pavement of the parking lot so it was easier for me to make adjustments. Given that I had zoomed all the way to 15x, I discovered that I was only able to capture the sun for a few minutes at a time before it moved off frame. Therefore, I had to keep repositioning the camcorder before, during, and after totality. This meant that I was unable to capture a continuous uninterrupted video of the eclipse. Maybe next time I’ll consider investing in a solar photography tracking mount, but I was mostly satisfied with the results that I got without one. I noticed that when the sun was closer to the edges of the frame, the camcorder had difficulty auto-focusing on the sun, but that was not surprising.

The one obvious missing recording device was my Canon R6 full frame mirrorless camera which I alluded to here. I expected to have my hands full with all the recording devices above, and the addition of my R6 camera and another tripod would have added significantly to my luggage. Therefore, I made the difficult but practical decision to leave it at home. Maybe I’ll bring my “big” camera to a future solar eclipse. Overall, I was happy with the amount of planning that I put into this momentous occasion, and I was blessed with fairly clear skies and good weather, all of which amounted to an unforgettable event. You can enjoy my eclipse video here and below:

Monday, April 1, 2024

My Tesla Tried To Kill Me

This is NOT an April Fool’s joke, although I admit that the title is a bit tongue in cheek. You see, about a month or two ago, following a Tesla software update for our Model Y, I was stopped at a red light. I was the first vehicle lined up at the intersection (i.e., no cars between me and the traffic light). While my traffic light remained red, the traffic light in the next intersection ahead of me turned from red to green, and that’s when my Tesla’s Green Traffic Light Chime (Autopilot settings pictured above) kicked in. The “ding” is supposed to alert you to the traffic light turning green, and at the time I remember wondering if my car would have proceeded to run the red light into cross-traffic if Full Self-Driving mode was turned on.

I can understand why my vehicle made the mistake since the 2 intersections were not far apart from one another. However, I also know that Teslas have the ability to judge relative distances, so it should have known that the traffic light that was closer to me was still red. Perhaps it failed to see one of the 2 traffic lights which is equally concerning. Tesla began replacing its ultrasonic sensors with Tesla Vision in 2021, so our 2023 Model Y (purchased in December 2022) should have been equipped with the newer technology.

I’ve experienced many other false alarms when the Forward Collision Warning alarms (also in the Autopilot settings pictured above) would scream at me on narrow winding roads near the UCLA campus, thinking that I was going to collide with either parked cars on the side of the road or with oncoming traffic. Note that even with Forward Collision Warning set to “Late” I have still been experiencing lots of false alarms. I assume that the artificial intelligence that powers the collision warnings was trained in scenarios where the roads were not quite so narrow and curvy. At a minimum, this erodes my trust in the Full Self-Driving feature. I also feel that these false alarms are startling and can be potential distractions or even safety hazards.

We were notified a few days ago that we were granted a 30-day free trial of Full Self-Driving (Supervised).

Notice that it explicitly states “You and anyone you authorize must use additional caution and remain attentive. It does not make your vehicle autonomous. Do not become complacent.” I might experiment with Full Self-Driving, but at this point I am not sure if I will rely on it routinely, as I have witnessed far too many instances where the car has mistakenly interpreted driving situations. Even if it makes the correct decision 99.99% of the time, that is 1 mistake in 1,000 (these are hypothetical numbers, as I do not know the actual accuracy rates), and any individual trip may involve hundreds, thousands, or more decisions. I think my views will change as the technology improves, so stay tuned...

Sunday, March 31, 2024

World Backup Day

It’s that time of year again—it’s World Backup Day. Have you backed up your important files? I use 2 external storage devices to backup my files, although they are both at home so are vulnerable to theft and disasters. What method(s) are you using, if any at all?

View some of my other posts related to backups to understand why it’s a good idea to back up your files.

Sunday, March 24, 2024

Safely Viewing the Total Solar Eclipse

On April 8, 2024, a total solar eclipse will pass over portions of Mexico, the U.S., and Canada. While a path of totality that traverses San Antonio, Austin, Dallas, Little Rock, Indianapolis, Buffalo, most locations in the U.S. will feature at least a 50% eclipse of the sun. That means a lot of Americans will be trying to experience the eclipse, whether it be by viewing it directly and/or taking photos or videos of the eclipse as I did in August 2017.

The main focus of eclipse viewing is to do it safely. In short, you should never look directly at the sun because it can damage your eyes. However, with the right eclipse glasses and the proper use of them, you can safely watch the eclipse. Read Safe Viewing of Solar Eclipses and Watching a Solar Eclipse Without the Right Filters Can Cause Eye Damage for additional information.

If you have concluded that you will buy solar eclipse glasses, and if you’ve paid attention to the references above, you know not to trust just any pair of eclipse glasses. The American Astronomical Society has a list of vetted suppliers. Make your your eclipse glasses are made by a supplier on this list.

Sunday, March 17, 2024

Navigating National Parks

If you’ve visited a U.S. national park and hiked any of its spectacular trails, you may have been given advice to wear weather-appropriate attire, use activity-appropriate footwear, bring sufficient food and water, travel in groups (or let someone know your plan if hiking alone), and various other helpful recommendations. However, we sometimes overlook one of the most important aspects of visiting national parks: getting there.

Although most people have cell phones with map applications (e.g., Apple Maps, Google Maps, Waze), we may be lulled into a false sense of security that those mobile map applications will get us to our destinations. In the absence of cellular service, those map applications may fail to work. That is why I recommend bringing a dedicated GPS device. I’ve used a trusty Garmin nĂ¼vi 650 for decades, and because it relies of line-of-sight communication with GPS satellites, it always works—even when my phone has lost cellular service.

Additionally, whether you use a phone-based or dedicated GPS, I recommend verifying ahead of time that named locations on your GPS device accurately represent your intended destination. For example, depending on the application you are using, if you select “XYZ National Park” it might pinpoint the geographic center of the national park which might be in the middle of the wilderness, or it might pinpoint one of several park entrances which may or may not be the entrance that you had planned to use. While visitor centers may often have named locations that are geographically accurate, campgrounds, trailheads, and parking lots may be less likely to have named locations.

If there are no named locations that match your desired destination, then I recommend finding its GPS coordinates. Some National Park Service websites like this one and that one will provide you with GPS coordinates for common destinations. If you are not given GPS coordinates, then I recommend using Google Maps to locate your destination on a map and grabbing its GPS coordinates. On a desktop or laptop browser, simply single-click on a location on the map, and Google Maps will tell you its GPS coordinates.

Tip: if you are given GPS coordinates in degrees/minutes/seconds, it may be helpful to convert them to decimal degrees for ease of entry into your GPS. Read my blog post about converting GPS coordinates for more info.

Finally, if you found GPS coordinates, don’t stop there. In addition to writing them down and bringing them with you on your trip, enter them into your GPS ahead of time and verify that it is really your intended destination. Don’t wait until you are actually driving to try to figure out how to enter coordinates into your GPS device. Plus, once you’ve entered the GPS coordinates, it is likely that they will remain in your “recently used” list which might make them more easily accessible when you actually need them.

So in summary, when navigating your way to and within national parks, I recommend 3 things to increase your chances of successfully navigating to your destination:

  1. Bring a dedicated GPS device
  2. Obtain GPS coordinates if named locations are unavailable
  3. Enter and verify destinations in your GPS

With these tips in mind, hopefully you will spend less time getting to your destination and more time exploring our protected lands.