I recently picked up a surplus battery-powered motor assist for a bicycle, and it's a lot of fun. Due to lower power you have to start peddling to 3mph and then it can run the bike for 10 miles at 10mph (for normal weight people, not me.)
A lot of older computers that people are ready to throw away can be decent linux boxes, in schools or in other charitable locations.
I'm not the first to think about it, since I see a bunch of patent filings related to it, but how hard would it be to have a sensor for windshield fog. Seems to me you could bounce light (UV perhaps which water scatters, though other colours might work) off the windshield to detect if there's fog on the inside and use that to control the defogger.
In this new category, "What a great idea" I will document interesting ideas I have seen in my travels. Things that make you go "why didn't I think of that?" Some may be new, others just new to me.
At a recent symphony concert, I came out at intermission to see a table laid out with drinks and snacks, each with a little numbered placard. People had placed and prepaid orders before the show, and thus could get their drink without any line.
Recently, Joel on Software wrote an essay on good programmers and how they are qualitatively different from average ones. This is not a new realization, and he knows it and references sources like "The Mythical Man Month." It was accepted wisdom decades ago that a small team of really brilliant programmers would make a better product than a giant team of lesser ones.
Mapping programs, and fancy GPSs come with map databases that will, among other things, plot routes for you and estimate the time to travel them. That's great, but they are often wrong in a number of ways. Sometimes the streets are wrong (missing, really just a trail, etc.) and they just do a rough estimation of travel time.
Recently there was a big fuss (including denouncements from many I know) over a U.S. effort to do away with the leap second. People claimed this was like trying to legislate PI to be 3.I am amazed at the leap the the defense of the leap second. I would be glad to see it go. All our computers keep track of time internally as a number of seconds since some epoch, typically Jan 1 1970 or 1980. They go through various contortions to turn that absolute time into the local time. This includes knowing all the leap-day calculations
This is a tricky puzzle question I thought up some time ago, but I figured I would blog it.
As people who study physics know, the acceleration a falling body undergoes if dropped (in a vacuum) at the surface of the earth is known as "g", or 9.8 meters per second per second.
This is so close to 10 that most students and people doing back of envelope calculations often use 10 as the value of a "g". It's easy. Fall for one second and you're going 10 meters/second.
Ok, this idea will make no sense to those who have not gone RV camping. RVs have 3 water tanks -- one for fresh water, one for the toilet sewage (known as "black water") and one for the other drains (shower, sinks) known as "grey water." When you camp in unserviced campsites for a while you become very aware of the capacities of your tanks.
However, the RV uses the fresh water tank to "flush" the toilet. It seems to me that with a small extra water pump, one could use the grey water, or a mixture -- grey with a final spurt of fresh to rinse the bowl.
RVs don't really flush the toilet, that would use way too much water. You rinse the bowl after #1 and you pre-fill the bowl before #2 and rinse later.
I blogged earlier about my being in the Silicon Valley 100, a group generated by a marketing company to send out free stuff to hopefully influential folks. In that posting, I link to Dan Gillmor's reaction to the program, where he writes about how "spooky" it is to him. I didn't agree that it was that spooky, but there is a definite irony to the fact that I recently got a set of books via the SV100, and in that set was Dan's own book "We the Media."
On 9/11, we all wondered how 19 men had lived for a year among us and still given their lives to carry out such acts. Now people wonder even more at how young native British men would give their lives to kill random fellow Britons.
But there is something different here that troubles me. Most suicide terrorists ostensibly use this tactic because there are targets you can only attack if you give your life. Suicide was an essential part of flying a plane into a building.
I wrote before on the ideal car dock for an MP3 player but the truth is we could use something even simpler sooner. On my recent trip, we brought the cassette adapter but there was no tape player in the rental car. We forgot the FM transmitter, but that's not as good anyway.
So right away let's see a small headphone plug on the car stereos to do a nice aux input, especially if you are taking away the tape. Duh.
As I noted earlier, last weekend I was at Oregon Country Fair, which is a great time. OCF has permanent facilities and has become more popular than it wants to be. All the booths, including food, have to be juried in and can in theory be kicked out to allow new ones in if popularity drops.
This results in much, much better food boths than you see at a typical random fair with vendors coming in simply if they pay their money.
And I wondered, can we extend this concept into the everyday restaurant world? For example a food mall, where the restaurant tennants are regularly judged for quality, and kicked out if they don't make the cut. Where you are assured a good meal at a reasonable price. If the idea works, people would go to this mall and make it worth the effort by the restaurants to stay.
This might work the same way movieplexes took over from solo cinemas. People go to a movieplex for the hot movie, but it often is sold out, so they go to a 2nd or 3rd or sometimes even 10th choice of what they want to see. This sells a lot more tickets and avoids people driving home without a movie at all -- though in my case I still sometimes bail out. Here, you could go to the restaurant mall with a particular restaurant in mind, but know that if it's too busy a fine meal is assured unless the whole mall is packed. There could even be a central line for "the next available restaurant."
Has this been done before? And what about going further and combining facilities...
All my sites were off today as I did an emergency switch of servers.
The whole story is amusing, so I'll tell it. I used to host my web sites with Verio shared hosting, but they were overpriced and did some bad censorship acts, so I was itching to leave. One day my internet connection went out, so I went onto my deck with my laptop to see what free wireless there was in the area. One strong one had an e-mail address as the SSID, though it was WEP-locked. Later, I e-mailed that address with a "hi neighbour" and met the guy around the corner. He had set the SSID that way to get just such a mail as mine. (I have a URL as my SSID now for the same purpose.)
My neighbour, it turned out, knew some people I knew in the biz, and told me about a special club he was in, called "Root Club." The first rule of Root Club, he joked, was that you do not talk about root club. Now that I'm out, I can tell the story. Root Club was started as a group of sysadmins who shared a powerful colocated web server, and all shared the root password and sysadmin duties.
Having completed a long fly-n-drive road trip, I have some lessons and observations.
If you will be driving a lot, use a rental car even if leaving your own city. We put 3000 miles on our rental car for $300 -- far less than the depreciation cost would have been on my own car.
It's great to have a cooler in the car, you can buy perishables and get cold drinks when you want them, but forget about those $5 styrofoam coolers for any long trip. Within a few days ours was leaking, we fixed it by putting a plastic bag inside and out, but they are not very sturdy. There are collapsible coolers and we have one but didn't have luggage room. You can buy a cheap solid cooler for under $20 at wal-mart or Costco, but it seems wasteful to throw it away. If you have extra luggage, you can fill a cooler with stuff, duct tape it and check it as luggage, however.
When you take pictures on the road, you would love to have the latitude and longitude coordinates of each picture stored with it. Indeed, if combined with a digital compass clever software could even tell you what landmark was in the photograph. (ie. if standing on rim of Grand Canyon looking north, it's probably a picture of the canyon.)
I recently visited the Oregon Country Fair, which among many other things has entertainment acts which pass the hat to earn their living. (OCF only costs about $13 to attend, not enough to pay much if anything to acts.) This is a pretty common setup.
Last year at Burning Man, I built a free phone booth out on the desert. Using VoIP, 802.11, batteries and a satellite uplink, it sat there on the playa floor and let you make free calls anywhere in the world. I blogged about that story, but there was an untold part of the story.