Archive for the ‘hobbies’ category

The Workbench

September 11th, 2009
The Workbench

The Workbench

I finally got my workbench set up a the new place.  Total cost: $10 (for an IKEA countertop from the AS-IS department—the only reason we go to IKEA)  The workbench superstructure is recycled from the crate in which they moved our china cabinet.  Now it’s time to sort through the junk box(es)!  I’d like to pick up some more test equipment, but I’m (clearly) out of space for that at this time.

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Resume of a Master Dumpster Diver: the Early Years

February 21st, 2009
Dumpster

Dumpster

With transition imminent in our lives, I have begun packing up some of my things that I don’t use much right now. It’ll save some time and headaches when we finally figure out where we’re going and begin the moving process. Coincidentally, my good friend Matt recently moved cross-country and elected to dispatch the majority of his tinkering resources via Craigslist. You see, Matt and I share a common vice: we are master dumpster divers.

I was reminded of this reality as I have been trying to center myself with respect to what’s important in life last week week. I have a lot of stuff, frankly, an embarassing amount of stuff. And, although I use a surprising amount of it, I really don’t need it. But, this post is about collecting the stuff, not getting rid of it. I’ll save that for a later post.

As I began sifting through some of the goodies tonight, a confluence of thoughts began to swirl in my head. I’ve had resumes and vitae on my mind for quite a few months now since I’ve been looking for employment (if you hire engineers or scientists, particularly for RF/signal processing/remote sensing/upper atmospheric/space research and development, I’m your man). And, I was poking through the rubble of my home “office,” which is actually my office, hamshack, and workshop, plus Sarah’s desk and books and the place that Sarah and I cram stuff into when company comes. Suddenly, it hit me: my entire resume can be read through my collection of odds and ends.

Dumpster diving, to borrow the analogy from Nelson Muntz, is like “kicking butt” in the sense that it might not involve any kicking at all. Likewise, you have to get to the stuff before it gets to the dumpster. This is the first rule of dumpster diving: Know who to ask, how to ask, and when to ask. The second rule is don’t get greedy. I learned both of these rules at a tender young age.

You see, the house I lived in between the ages of three and nine was next to the Village of Millersburg’s street department garage. Of course, this was a great boon for a child of my age to see all of the equipment and workers coming and going. Mom and Dad may remember this story differently; but, this is my recollection.

Although I was fascinated by all aspects of construction work, the one thing that I obsessed over more than anything else was signage. Some kids are experts on dinosaurs, I was fascinated by road signs. I coveted the road sign poster on the wall at the BMV. Mom had inquired about obtaining one for me to no avail. The other thing I coveted was a road sign or two of my own. A friend had a stop sign in his room; but, I was looking for something more exotic, maybe a yield sign. My poor mother worked some connection she had at the Street Department to get a discarded sign. She told me that we could go down to the sign depot and pick one out in the morning, which was probably a mistake.

I rose particularly early the next morning and, after locating the sign depot, collected a few signs for myself. When you’re a kid, street signs don’t look big and heavy on their posts. But, when you get up close, they rival your personal geometry. So, I left a trail of signs I couldn’t carry back up to the house. I don’t remember the details of what happened next, other than that we had to return all of the signs and get “approved” ones. I hope somebody thought it was funny; goodness knows I learned a lesson that day about the difference between dumpster diving and theft of city property.

A few years later, Mom had an antique dealer come through the barn behind the house and the signs caught his eye. She let him have them for a song. I was incensed at the time, although in retrospect, it was probably better to not profit too much on them.

The basement of the Inventor’s Hall of Fame once hosted an area where kids could dismantle old hardware. We were fortunate to visit when some racks of AT&T Long Lines hardware had been recently donated. I think I carried a half-dozen plastic sacks of relays, waveguide, transistors, meters, and other assemblies out of there that day. Although I have sifted through most of that by now, the juiciest pieces still remain in my inventory, ready for use. I still don’t think that the docents knew what hit them when the budding master dumpster diver rolled in.

Although I dabbled off and on in the barter of used electronics and such in high school, the dumpster diving began in earnest again in college, where I met guys who weren’t afraid to actually climb into real dumpsters to fish things out. Those were good times. Most of the stuff we pulled out of the dumpsters was building materials, which we used to spruce up our living spaces. Blocks from a demolished (the Young Building of Philosophy and Relgion, a grievous sin against architecture and HVAC) academic building allowed us to put an “upper deck” couch behind the regular couch in our apartment for stadium seating. This was great for watching movies, or at least watching my roommates play Mario Kart 64 with their pharmacy notes on their laps…right.

One of the other great successes was DuddiNet and the Tower of Power. I dragged an 8-foot relay rack (rescued from the scrap heap at a summer job) into my dorm room and filled it full of computers and networking equipment. I asked the university IT people if they had any leftover rolls of CAT5 cable and they gave me as much as I wanted. We pulled our own network in the dorm. At that time, the dorms were 10baseT with hubs. So, it was a real bottleneck if you wanted to move some data (use your imagination here) around. We put in a private switched 100baseT network that connected four rooms on two floors.

In more recent years, I’ve scored some terrific stuff just by paying attention when spaces are being cleaned-up. For instance, that’s how I got my HP vector voltmeter and my oscilloscope. And, indirectly, through Dad, it’s how I got some more Greenlee punches and a set of metal-marking stamps. Anyhow, in order to protect “sources and methods,” I’ll decline from disclosing too many details about my more recent activities…I haven’t swiped anything from a forbidden dumpster, though. Promise.

» Read more: Resume of a Master Dumpster Diver: the Early Years

Hobby, Passion, Obsession?

December 13th, 2008
Bus Stop

Bus Stop

When does a hobby become a passion?  When does a passion become and obsession?  I missed the bus the other day taking long-exposure shots at the bus stop (none of which came out good enough for the web—need a tripod).  I sprinted two blocks and caught the bus at a stop light.

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Playing Pool: Implications for Engineering Education

November 4th, 2008
3 ball

3 ball

As I have written before (in the old WordPress version of the blog which I will eventually import into the present one), I have spent about the last six months learning to play pool. This has been a fascinating experience.  We have a player in our league who is almost always disruptive and socially a misfit.  But, he’s a phenomenal shooter.  He throws three sheets to the wind, takes absurdly low-probability shots, and makes them with frightening regularity.  Why?  I suspect it’s because he not only has the skill to make shots, he’s confident that it’s the right shot to take.  In the Scientific American article The Expert Mind, Philip Ross quotes chess master José Raúl Capablanca as saying, “I see only one move ahead, but it is always the correct one.”  This is also the root of the “don’t second-guess yourself” on standardized tests and the thesis of Malcolm Gladwell’s book Blink.

It would be hubris to suggest that confidence alone yields success (look no further than the White House for a counterexample).  However, the combination of experience, analysis, and confidence, act in synergy to produce results.  The challenge is to create an environment or a curriculum that prepares confident students without watering-down the process.  Confidence in engineering education is not limited to simply being confident that you can solve a given homework problem.  Confidence is understanding how you and your education fit into the engineering process.

Perhaps the most important take-home lesson for engineering educators is to subject yourself to humbling learning experiences from time-to-time.  This would make all of us better teachers.

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Miscellaneous

October 27th, 2008

Just some miscellaneous news from happenings over the past month…first, the good news…

I passed the oral exam on Tuesday.  So, I’m officially ABD now.  There is a light at the end of the tunnel.

Nikon released the 50mm f/1.4G AF-S SWM prime lens at the end of September.  I guess I wasn’t paying close enough attention.  This is good news for D40 owners such as myself.  But, the price is almost as steep as the Sigma f/1.4 30mm and 50mm HSM lenses.  The 30mm lens would be a better all-around choice.  Perhaps Nikon will come out with something a little shorter by the time I’m ready to buy.  Until then, I’ll keep using the 50mm f/1.4 AF-D that I have on indefinite loan from work.

I managed to destroy the drivers in my recently-repaired TS-930S.  I considered swapping the drivers from my second radio into this one.  But, when I took that radio apart, I found that the capacitors had swollen.  So, I have parts on order to fix that.  UPS says they’ll be here today.  I requested a quote for the NTE236 replacement for the MRF-485 drivers.  They want almost as much for the NTE236 as RF Parts does for the MRF-485.  I think I’ll get the MRF-485s.

We had high winds yesterday (Sunday).  I lost the 80-, 40-, and 20-meter dipoles.  Sarah said, “Do you expect that (80-meter) antenna to last the winter?  It just broke in September.”  She’s right.  I’m not sure I’ll repair it if it breaks again.   It’s less than a week to the CW Sweepstakes and I only have one working radio (FT-840) and antennas for 10 and 15 meters.  The forecast calls for 65 and sunny on Thursday.  So, I’ll probably take the day to work on antennas.

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The problem with the gym

September 26th, 2008
Feet

Feet

Sarah has suggested several times that I should consider working-out.  A few weeks ago, she finally prevailed and I started going to the gym while she was doing water aerobics.  For me, going to the gym is a little like watching a childrens’ Christmas pageant.  You know it’s the right thing to do; but, it’s a little painful and worst of all, it’s mind-numbingly boring.  I had a good work-out today.  I actually was happy to be there for the first twenty minutes or so.  Have I pushed through the burn of boredom?  Time will tell.  I did feel like a million bucks when I finished.  I do enjoy that feeling.

» Read more: The problem with the gym

Food

August 24th, 2008
Vegetables

Vegetables

Last night after cleaning the garage, we went out to a chain steakhouse (we almost never go anywhere like this) because we were hungry and didn’t want to cook. As we were leaving, we were discussing how the food was good, but it really just wasn’t that fabulous.  I guess you’ve grown-up when you can cook better for yourself than someone else can…

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False Precision: A Life Lesson from Tinkering

July 12th, 2008

hp3310a-web.jpg

I’m a tinkerer.  I’ve collected some basic test equipment and tools that allow me to work on many things, mostly electronic and mechanical.  I have a cheap digital multimeter; but, the rest of my test equipment, like the HP 3310A function generator pictured above, is analog.  Unlike digital equipment, where it’s no big deal to add extra digits to a read-out, analog equipment usually offers no more precision in its read-out than it’s capable of resolving.

Recently, I was talking to the guy who was the grader for an RF circuits class I took a few years ago.  He was telling me how amazed he was that students would calculate the required inductance for an inductor to five digits of significance.  And, they would write it in scientific notation: 3.1562E-6 Henries.  We laughed.  Nobody can make an inductor that precisely!  Yet, we can calculate (and often measure) it that precisely.    Tinkering, the process of getting something working, often does not require great precision.  Sometimes that’s easy to forget when you have a powerful computer and a lab full of pricey test equipment.

It turns out that a lot of things in life do not demand immense precision.  Heck, we might be better off without digital precision…

This is How We Roll: A Life Lesson from Travel

July 11th, 2008

acapulco-street-web-bw.jpg

Even though we did a little too much of it this Spring, I enjoy traveling and seeing new people and places. Certainly, I have been an impatient traveller at times. But, some of the best times I’ve had traveling have been the “eh, stuff happens” times, the times when I’ve just “rolled with it.” Taking the wrong bus. Streets closed on the way to the airport. Delayed flights. Traffic jams.  Missed flights. They have been adventures, not always stress-free, but I’ve survived.  Luck favors the prepared.  Are you prepared?

Turn the Big Knob: A Life Lesson from Ham Radio

July 10th, 2008

radio-key-web-bw.jpg

Ham radio is a great hobby and I’ve met numerous interesting people through it.  But, perhaps more so than some other hobbies, it has its share of sociopaths and nuts who tend broadcast and discuss their intolerant, backwards, or just plain nonsensical viewpoints on the air.  There’s even a saying, “If you don’t like what you hear, turn the big knob on the front of your radio.”  I am torn by this sentiment.  It represents a “tragedy of the commons” that dooms the entire hobby.  At the same time, giving feedback to the belligerents usually only eggs them on.

There are some people who are worth your time and there are some who are not.  There are even some times when good people try to jerk your chain.  Know when to turn the big knob.