Studio711.com – Ben Martens

Patent Approved!

Years ago, I wrote up a patent application at work. It had to get approved by my management chain, and then a team of lawyers at the company interviewed me. They wrote up a 50-page version of my 2-page explanation and then sent it off to the US Patent Office. Years later, the patent office replied saying that they agreed that my invention was unique and patentable. The Microsoft lawyers contacted me for an update to decide if it was still worth patenting, and they decided to go for it. After more waiting, there’s now an official patent recorded with my name on it: US 11,475,017 B2 “Asynchronous data enrichment for an append-only data store.” If you go to their search tool and search for “((US-11475017-B2).did. AND USPT.dbnm.)”, it should return our patent as the only result.

This isn’t going to change my life or make the company a ton of money, but there’s something very satisfying about having my name enshrined in the USPTO as the inventor of a brand-new idea!

benmartens December 12, 2022 Geek

COVID-19 Day 1000

One THOUSAND days of the pandemic. Where are we now?

In my county, somebody is still dying every day from COVID. It’s a big county and I don’t fall into the categories of people likely to die from it (5x more likely to die if you’re not vaccinated and boosted, 23x more likely to die if you’re over 65), but still, I don’t want to be involved in the spread of the virus in any way. It’s still the third leading cause of death (behind cancer and heart disease), and in 2022, we’re going to end up with more COVID deaths than we had in 2021. It will be about the same as Alzheimer’s (#4) and accidents (#5) put together.

All three of us were happy to get the new “bivalent” booster shot. Those shots offer protection against both the original virus that causes COVID-19 and the Omicron variant BA.4 and BA.5. We were pleasantly surprised by how full the appointment schedules were to get one. If you haven’t scheduled yours yet, now is the time! With good habits around keeping up to date with the shots, staying home when we’re sick, and lots of at home testing, we should be able push this farther down the “causes of death” list than #3!

P.S. Wondering if you’re eligible for a booster shot? Check the CDC COVID page and click “Find Out When to Get a Booster.” If you haven’t had the updated booster shot yet and it’s been more than 2 months since your last shot, then the answer is probably yes!

P.P.S. Did you know that most insurances cover 8 at-home test kits per month for free? Just walk into your favorite pharmacy and they’ll get them for you.

P.P.P.S. Consider scheduling a flu shot as well if you haven’t had one yet. We’re in a very bad flu season and it’s ramping up earlier than normal. It’s the worst since 2009 or 2010 depending on whether you use reported cases or hospitalizations, respectively.

benmartens December 8, 2022 Commentary

Artificial Accountability Partner

Back in January, I wrote about using a habit tracker app to help me keep up with my back exercises. Every morning at 8am, I get a notification on my phone asking if I’ve done those stretches yet. It’s amazing how much that little question keeps me honest! And now that my streak is over 300 days, it’s even more encouraging for me to spend a little time on those stretches.

A few months after I started that, I decided to try it on a couple other habits too. I set up one that asks me how many pops I’ve had that day and then there are three others that say “Did you have zero/one/two alcoholic drinks today?” Both of those habits slowly creep up over time if I don’t pay attention. There’s always an excuse about why I deserve to have a pop at lunch or why I should have a drink before bed or how I’m on vacation so I can splurge a little. But having those stats in front of me and knowing that I’m going to have to answer those questions every evening is a great motivator. My pop consumption has come down from a peak of two per day to two per week! And with all the camping trips, grilling, and vacations in the summer, it’s easy to fall into a pattern of having a drink every night, but that’s going well too.

I’ll be putting that habit tracker to the test in December. I bought one of those beer Advent calendars. I’m excited to try all those different beers but I’m already bummed about how it’s going to impact my habit tracker stats! Hopefully that feeling continues into January and I can bring the stats back up quickly.

benmartens December 5, 2022 Commentary

2022 Christmas Ornament

Every year about this time I write about how every year about this time we put up our new ornament for the year. This year’s ornament comes from our trip to Hawaii. There was a Christmas shop right on the main drag through Waikiki.

I’m not always big on traditions, but I do love this one. It’s fun to look at the tree and be reminded of lots of great family adventures! You can see our past ornaments in these posts: 2021, 2020, 2019, 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2008-2010

benmartens December 1, 2022 Family

Launch Windows

We have been excitedly following the Artemis 1 mission as NASA prepares to send humans back to the moon. That coupled with all the SpaceX launches we’ve watched led Elijah to ask how launch windows are calculated. Instead of guessing at the rough idea, it seemed like a good opportunity to learn something.

For something like a trip to Mars, it seems more obvious why there would be a launch window. If the two planets are on opposite sides of the sun, the trip would take much longer than if the two planets are close together. JPL has page that explains this and here’s an animation from the Wikipedia entry for “launch window.” In this example, earth is blue, Mars is green, and the Mars lander “InSight” is purple. The timing of the launch is critical to get the correct trajectory to Mars and the launch window only opens every 26 months.

(Side note: InSight has been collecting data on Mars for four years and we’re within days/weeks of the mission ending. The solar panels have gotten so covered in dust over the years that it barely has enough power to even communicate with the orbiting satellites. You can read more about the end of life preparations on the NASA site.)

But what about launching to low earth orbit? It turns out there are a lot of factors which are listed in an article from Kennedy Space Center:

  • When meeting up with an object like the space station or aiming for launching a satellite in a specific spot, the timing is important for the same reasons as described above.
  • Atmospheric conditions (e.g. wind and temperature) can impact the performance of the rocket and how much fuel will be burned.
  • Launching a few minutes early/late can require extra fuel to adjust the trajectory. How much extra fuel is available when the other factors are taken into account?
  • Collision avoidance is included to give the rocket the best chance of reaching its goal without hitting any space debris.

All these factors (and more) need to be analyzed for all possible launch times within the window to ensure mission success. Loading more fuel on board might be one way to expand the launch window, but that can have other effects on the mission. Everything has to be balanced for success.

benmartens November 28, 2022 Science

Visited States

One of the main goals of this blog is to document my life. When I wrote the National Parks post a couple of weeks ago, it got me thinking that I should make a similar post about all the states that I’ve been to. LONG time readers might remember that I did this back in 2003, but I’ve added a few more since then.

The states are a little trickier because doesn’t it count a little different if I live in a state for 10 years versus stopping in a state for a 2 hour layover? I decided to break it down into four categories:

  1. I lived there. (Green)
  2. I visited there. In most cases this means I spent at least one night there, but in a couple days it just means I spent a full doing tourist activities and then slept across the border. (Purple)
  3. I drove through the state (Yellow)
  4. I stopped for a layover (Blue)

I was debating whether to include the “layover” category at all because it hardly seems like it should count, but it turns out that there aren’t many states in that category anyway.

By my count, I’ve been to 39 states + Washington DC if we ignore the layover states. Holler if you know of anything I’m missing on here!

If you want to make your own map like this, check out mapchart.net.

benmartens November 24, 2022 Travel

Xfinity Mobile – 16 Month Review

Time flies when you’re… saving money? It’s been 16 months since we ditched Verizon and went to Xfinity Mobile. As a quick recap, Xfinity Mobile uses the same cell network as Verizon but it’s cheaper and lets you easily switch your plan from month to month with no contract. Because it’s Xfinity and because the deal is so good, it feels like there should be a catch… but there’s not.

For the last 16 months, we’ve averaged $25.78/month total for our two lines. Not per line. Total. Granted we use a small bandwidth plan of 1GB shared between the two lines per month, but for our usage, that’s fine. In those months when we just use the 1GB, our bill is just under $20. We had one month where we bumped up to 3GB and another where we bumped up to both lines with unlimited data. If we had stayed with Verizon, and if Verizon hadn’t increased prices over that time (HAHAHA), we would have spent $78.50/month including my 20% employer discount. So we’ve saved $843.52 or over $50/month and our service has been the same.

To make it even better, the cost for the Xfinity Mobile plans has gone DOWN over time. It used to be $40/line/month for unlimited data but now it’s only $30/line/month. So if/when we change up to that again in the future, it will be an even easier decision and that’s getting cheap enough where I wonder if we should just use that all the time.

If you have Xfinity internet, give Xfinity Mobile a hard look. Unless they don’t support the phone you like, I can’t think of many reasons to not use them.

benmartens November 17, 2022 Commentary

Battery Backups

We don’t lose power a lot here anymore, but we have a lot of power flickers. Those rapid shifts in current can be bad for electronics, not to mention that it’s annoying when I’m in a meeting and my computer reboots because the power blipped a second. I started protecting my equipment with battery backups and now I have five of them spread around the house:

  1. My home theater is all on one. When the power goes out, my projector, Xbox, and sound system keep running for a while.
  2. Our home networking gear is all on a bigger unit than it needs to be. I can run our cable modem and WiFi for about 45 minutes. This is helpful not just for keeping the modem from resetting in a power blip, but it also lets me continue my work meetings for a while even if the power goes out.
  3. My main desktop machine and monitors are on one.
  4. Our downstairs TV is on one.
  5. The most recent addition was one for the 3D printer. We had a power blip in the middle of a long print and that meant I had to start all over.

These units give me a little piece of mind about protecting the units from changes in voltage but they’re also nice to smooth out the blips. What I really want is a whole-house system that smooths my power and provides some battery backup but those are not really targeted at home users yet. I expect that will change over time with all the research going into battery tech.

I have a mix of devices from CyberPower and APC, but most of them are either the big 900 watt units or the smaller 550-600 watt units. I like to put a Kill A Watt meter on whatever I’m going to buy the backup for to see how many watts I need and then I give it plenty of headroom (like 2-4x). There are calculators online that will help you translate all that into runtime, but like I said, in most cases I’m trying to protect against the 1-5 second outages so as long as I have a few minutes of runtime, that’s enough.

These battery backup devices only last a few years before the battery dies. The battery is a major component of the cost so in the past, I’ve usually replaced the whole unit to avoid frustration, but with five of them in the house, that’s a lot of extra unnecessary replacements. In the last power outage, I discovered that two of my devices had batteries that wouldn’t sustain the load anymore. I replaced one of the big 900w batteries and now the unit works great! The old batteries take some work to dispose of properly but I had that problem when I’d replace an entire unit anyway. I need to get better about remembering to periodically unplug each of these units from the wall while things are running to ensure that the battery is still good. Some of them do a self-test but it doesn’t seem to always catch bad batteries properly.

These units have other benefits too. When the power goes out for longer than a few seconds, I walk around turning most of the units off so save battery power. I can run lamps and charge phones for hours with them and I’ve even though about taking one of them camping when we’re off grid for a long time.

benmartens November 14, 2022 Gadgets

Ninjago Sword Prop

As we approached Halloween, we went through a lot of ideas for Elijah’s costume. Since we haven’t done trick-or-treating for the last couple of years, we decided to let him get an actual costume. He chose to be the green ninja from Lego Ninjago. I couldn’t resist making part of his costume so I set out to make a dragon sword to go with it.

I wouldn’t have gotten far if I hadn’t found an existing model, but luckily Thingiverse came through for me. I pulled that model into Fusion 360 and spent hours trying to figure out how to cut it nicely on the CNC machine without taking forever. I was able to apply a lot of learnings from my Luther Rose project.

The final product was carved out of a scrap 2×4 and I did it in two separate halves. If I had it to do over again, I think I would learn how to program in a cut that I can flip over halfway through because the seam between the two pieces was visible even in the finished product.

Once the pieces were glued together, I applied a few coats of a filler primer with sanding in between. The sanding took a long time with all the nooks and crannies. Thankfully, Elijah got interested in the project at this point and helped with the sanding.

We finished it off with a couple coats of high-quality gold paint. The final product looked amazing! It makes me want to do another one at the biggest scale that my CNC could handle…

benmartens November 10, 2022 Maker, Woodworking

Choosing An EV With Enough Range

Welcome to another Tesla Tuesday!

Range is a key factor when picking an EV. Until superchargers are as ubiquitous as today’s gas stations, EVs do require extra planning. So how much range do you need?

For normal daily use, the only factor to consider is whether you will comfortably make it home at the end of the day so it can charge overnight. I underestimated how much I would love knowing that my “tank” was full every single morning! On a road trip the range can impact how many stops you make along the way.

Just like in a gas car, your driving style can dramatically impact your range. We average around 250 Wh/mi (watt hours per miles) which means our 75KWh battery is good for 300miles. The EPA estimated range is 330 miles, but that number always seems to be high for all cars.

As the car gets older, the batteries are going to lose some effectiveness. There are lots of studies about this, but data suggests that we’ll lose 5% of our range after 50,000 miles and then another 5% by the time we hit 150,000-200,000 miles. At 50,000 miles, our range will be an estimated 285 miles of real-world driving.

Most current battery technologies do not like to be charged up to 100% or drained to 0% (though Tesla has some models that do like to be charged to 100%.) The Tesla manual suggests charging to 90% and not draining below 10% for regular use. This knocks our 285-mile range down to 228 miles.

It’s not just driving that will impact your range. The car is using battery all the time. Teslas all can record from four cameras around the car while they are parked, and your battery management system might be running various fans to heat or cool the battery. If your day involves a lot of sitting in parking lots, plan for another one mile of loss per hour. There’s also a feature called “Cabin Overheat Protection” which makes sure the temperature in your car never gets above 105. If you have that enabled on a sunny day, you’ll be losing battery to run the air conditioner. Let’s assume we’re parked in the hot sun at work all day and knock off another 15 miles. That brings our example down to 213miles.

Heating and cooling the passenger compartment can use a significant amount of energy too so you’ll want to build in some buffer for that as well.

We put about 75-85 miles per day on the car so ~200 miles of range is plenty. It gets charged up every night and we’re ready to go the next day. The only time I really think about range is when we’re taking a longer trip.

So why am I sharing all this? It may sound like I’m hating on EVs, but my goal is to encourage you to get the biggest battery you can get if you’re thinking about an EV. Even if you’re only planning to use it for your normal daily routine, take your normal daily mileage and double it. Use that number when you’re considering various vehicles. Assume you’re only going to comfortably get ~1/2 to 2/3 of the EPA rated range.

We don’t think about this as much with gas cars because it’s easier to stop and fill them randomly. But on the flip side, if current battery ranges are more than enough for almost everyone’s daily commute, would the market really going to pay for even bigger batteries? What’s the incentive for car companies to shove bigger batteries in the car when that’s already a huge part of the cost of the car? A better fix is getting people to realize that they have more than enough battery for daily use and getting the fast-charging network built out more for long trips. This whole post will probably feel silly in 20 years.

benmartens November 8, 2022 Electric Vehicles