February 26, 2010

Perpetuum Mobile and the Ecstasy of Gold

For years, I would hear this one song in commercials and never knew what it was. But it would show up from time to time, usually somehow technology related. It sounds a little like Philip Glass. If you heard it you would recognize it right away. So tonight I was watching TV and a commercial came on for the restaurant Carrabbas and there was the music! I hoped it wasn't too new to Google and searched the internet, knowing there are sites where people identify music in commercials. The answer popped up in no time! And from the responses this post got, I wasn't the only one that had been looking for the name of this for a long time. Anyway, I'd never heard of the song or the group. The song is "Perpetuum Mobile" and it is by The Penguin Cafe Orchestra. You can see them playing it on YouTube. They have some others here and here. They made this one using a dial tone.

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February 14, 2010

Wash Sale

I've known about wash sales for a while and what I always thought it meant was when you sell a stock at a loss and then buy it back within 30 days. The IRS sees this as just a way to harvest some losses without actually changing what you invest in, a move done solely for tax purposes. So what they do is say you have to defer that loss until you sell the shares permanently. But when I have shares bought at different times and then sell some of those shares, I would rather show a gain than hassle with deferred losses from a wash sale.

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February 12, 2010

Snow Showers

Today we were forecast to get snow showers. I don't know how or if snow showers are any different than just getting snow. But eventually we did get some pretty good snow. Downtown we watched as it snowed more and more and even started to build up. At about 4:30 our boss came through and said he hadn't gotten the message that we had been dismissed at 3:00. In the city, the snow was nice, but not that impressive. But as I rode the train home I started seeing how it had built up in the trees. Here is a picture I took from my front yard looking across the street. It was really pretty.

snowday.jpg

Last Light of the Ox

Last Friday I ordered my first programmable flashlight, the Akoray K-106. This light has a lot of fans at Candlepower Forums and it was the first direct-shipped budget Chinese light I thought about getting back in November when I was thinking about getting some lithium ion batteries. You may recall that the first LED flashlight I got was a Fenix L2D, which could be converted to a L1D that takes 1 AA battery. That light has six modes but is not as bright as the L2D with its 2 AA batteries. However, if you up the ante further by inserting a single 3.6V lithium ion battery, you lose all of the lower modes and the light is stuck on High. For this reason, I wound up buying the budget Uniquefire S10, but I blew it out when I tried a lithium-ion battery. So I was still looking for a 1 AA light that could handle a lithium ion battery properly.

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February 11, 2010

DX and KD reviews

Here is a list of product reviews I have written on DealExtreme and KaiDomain. They don't have a way of looking them up on their site (or editing them once you have written them, which isn't so great), unlike Amazon which KaiDomain bases its web design on.

Flashlights

Trustfire XP-E F23 1xAAA flashlight, DX sku.24291

Ultrafire WF-504B 1x18650 flashlight with XR-E R2 drop-in, DX sku.24200

Uniquefire S10 1xAA flashlight, KD ID 10303

Other things

18650 Charger, DX sku.6105

Universal NiMH/Li-ion Charger, DX sku.14885


February 5, 2010

Cheap 18650 Li-ion Charger

I bought a cheap charger from DealExtreme for my 18650-size lithium ion batteries. My other cheap charger will charge most 18650's (though some are probably too long to fit), but it uses a lower charge rate that would take forever to charge up an empty battery. For instance, the small charger uses a 300mA charge rate and an 18650 battery is 2400mAh, so it would take 8 hours to charge that battery at a constant 300mA. And my big flashlight uses two 18650's and the little charger can only charge one at a time.

So I found this other charger for $7.92 shipped that has two independent charging bays, supposedly charges at 1000mA, and stops charging at 4.20V like it is supposed to.

http://www.dealextreme.com/details.dx/sku.6105

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February 1, 2010

Ultrafire UMC WF-1200L

I did a lot of research lately on bright flashlights. One general thing is that to get more light you need a bigger LED. Luminus is a company that makes large LED's called the SST-50 and SST-90 which have LED's of 5 mm² and 9mm² respectively. But these are new, pretty expensive, and take a lot of current to power to their full potential. There are two older models of LED that take 4 smaller LED's and put them on a chip together to act like it is one big LED. These are Seoul Semiconductor's P7 and the Cree MC-E. There are some budget lights that use P7 and MC-E's, but these still cost about $30. One thing with the bigger LED size is you need:


  • A bigger reflector to focus all the light

  • A lot of battery power to drive the LED's to full power

  • Good heatsinking to carry a lot of heat away from the LED

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January 27, 2010

Ultrafire WF-504B with XR-E R2 Drop-in Review

I was interested in getting a flashlight that could accept P60 drop-ins. After reading Don's review at jayki.com it seemed like the 504B would be a good choice for a host because he felt like the heat-sinking was good and he liked the button. It looks good too and it is able to tailstand. I figured since the anodizing on these is Type II instead of the more durable Type III that I would be better off with the natural aluminum version because it wouldn't show if any of the finish flaked or wore off. I liked the shiny finish in the pictures (looked like stainless steel) more than the shiny black finish (it seems like black should be more of a matte finish than glossy).


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January 25, 2010

AeroPress Coffee Maker

I got the fancy coffee maker I wrote about earlier. It's just a collection of plastic pieces. If you saw them, I don't think you'd guess they are for making coffee. They almost look like medical or lab equipment.

I'm not sure if it is because I am using twice as much coffee, or if the thing really works, but it does seem like the coffee is better. If I followed their instructions they would have me using 4 times as much coffee as I use in my Mr. Coffee. So to make it stretch further, I am increasing the stirring time and adding more hot water. The water is probably a little hotter as well. I know if I used freshly ground beans, it would go way up in quality, but I don't have a grinder or any beans, so that is something I may do later.

I have made coffee with it three times now. The most time-consuming part is heating up the water in the microwave. It takes about 3.5 minutes to get 8 oz of water to the right temperature. While it is heating up I can load a small filter in the bottom of the maker and measure out the grounds. Then wait on the microwave. As a hungry Homer Simpson said on meatloaf night "Isn't there anything faster than a microwave?!" So then you pour most of the water into the maker, stir, and just set the plunger in to make a good seal, but don't press. Now add some milk to the rest of the hot water from the microwave and put it back in the microwave for another 30 seconds or so. The reason you put the plunger in first is otherwise the water will all gravity feed through the filter. So then you press and you find out you press the water out pretty quickly and most of the time you're just pressing air through the filter. It seems kind of silly to press air, but it does help in the cleanup because the plunger is like a squeegee down the inside of the other chamber. Once you've done that, add the rest of the hot water to the cup (the coffee has drained directly into the mug).

One thing is you don't get that coffee smell in the kitchen, which I guess is good because maybe that lost flavor is going into the cup instead. Once you are done it seems like there are a lot of parts. There is the plunger, and then the container and the filter cap plus the stirrer and you have to have a second mug to heat the water in originally. With the Mr. Coffee there is just the basket and the coffee pot and they all go back together to air dry. So I don't think cleanup is as easy, but you can heat up water any way you want, so you aren't dependent on electricity. Some people have a special boiling hot water tap and that would really speed things up. In fact, this would be ideal for people like that. There are a ton of reviews on Amazon and some people take this to work with them because the community coffee isn't that good and they want to make their own.

January 17, 2010

A Good Cup of Coffee

Today I was researching coffee for some reason. So I started off researching french press coffee makers where you pour hot water over some coffee grounds and then force a strainer down over all of that and wind up with coffee on top and grounds trapped at the bottom. The nice thing is this is a pretty simple machine and they are cheap. People swear by these. I was watching a show on Discovery about coffee (maybe that's what set this off) and a couple of the experts said that is their favorite way to make coffee. The problem with the french press is the filter is pretty porous and it lets fine grinds past, so you end up with cloudy coffee with some sediment. You can avoid that by grinding the coffee to end up with bigger chunks. Sounds simple, but most grinders can't do that and you end up with some big chunks and some little ones in economical grinders. So french press lovers say you need to spend $200 on a special burr grinder that will only produce big chunks of beans. So much for economy: a $15 coffee maker requires a $200 grinder.

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