3,535 reputation
1019
bio website embedinc.com/olin
location Littleton, Massachusetts
age 57
visits member for 1 year, 5 months
seen 21 hours ago

Electrical engineering consultant specializing in microcontrollers and the circuitry around them. Master of engineering in EE from Rensselaer Polytechnic Institute in 1980.

We are certified Microchip design partners, and have been in the top catagory consistantly since around 2000. Various free downloads related to developing PIC firmware and other things are available at http://www.embedinc.com/pic/dload.htm.


Jan
10
comment How much heat can a candle lantern provide while winter camping?
@Russell: Oops. I was thinking 8x3 and somehow managed to write 8x4, then propagated that error further down. That is all fixed now. 8x3 feet is very small when considering the dissipation surface of a tent. Keep in mind we're talking about a tent, not a bivvy sack or the like, meant for winter use. Also, the dissipation area will be more than the footprint area. Again, I was being conservative with the numbers to point out that it clearly won't work. If you disagree, show where the math or the logic is wrong. Claiming "doubt" is no useful information at all.
Jan
8
comment Can I mix fuels when using the MSR whisperlite international stove?
@Nisan and whatsisname: Any stove capable of burning white gas is capable of burning regular gasoline as these are chemically mostly the same thing. The issue is the additives which can cause problems, some over the long term. As Nisan says, it's "not recommended", and as whatsisname says, burning white gas is "better". We are all saying the same thing here, so I don't understand the objections.
Jan
7
comment Can I mix fuels when using the MSR whisperlite international stove?
@Nisan: It seems like you are just repeating what I said. What point are you trying to make?
Jan
6
answered Can I mix fuels when using the MSR whisperlite international stove?
Jan
6
comment How much heat can a candle lantern provide while winter camping?
@sgd: Saying snow has any particular R value makes no sense. Perhaps some particular type of snow at a particular depth may have a reasonably repeatable R value, but just "snow" doesn't. In any case, for this snow to matter in the analisys above, it would have to cover the tent. A tent covered in snow would be better insulated than one that is not, but only for temperatures below freezing. Snow is essentially a infinite heat sink at its melting point.
Jan
3
comment Kepler Track: Brod Bay to Iris Burn Hut in one day?
What is the total distance you are planning on hiking in one day? The lettering is hard to see on the chart. Also, it you're not in such great physical shape, fix that before you go. Just running a few miles at lunch time or whatever can make a lot of difference.
Jan
3
awarded  Enthusiast
Dec
29
comment Adequate Shoes for Travel
Hey, us American's aren't that dumb. We also know all Canadians wear plaid flannel shirts, carry large axes, end sentences with "aye", and are named "Nanook".
Dec
28
comment Is it dangerous to sleep in a tent alone in a forest in -20?
The tent size issue for heating makes no sense. The 30 W or so your body puts out raises the temperature in even a small tent a insignificant amount. See the recent discussion of a candle raising the temperature, and that was assumed to put out 100 W.
Dec
27
awarded  Nice Answer
Dec
26
awarded  Nice Answer
Dec
26
comment What dried vegetarian foods have the highest ratio of calories to volume?
Peanut butter may be a very dense food in terms of sustinance per pound, but it is also serious bear bait. Anything you manipulate it with will have a smell. It's not quite as bad as frying bacon and eating it in your tent in the evening, but I wouldn't take peanut butter to bear conntry.
Dec
26
comment Adequate Shoes for Travel
If it was southeastern Iowa urban village I might know, but sorry, don't know anything about Canadian urban villages.
Dec
23
awarded  Excavator
Dec
23
answered Water-resistant shoes for Trekking in New Zealand
Dec
23
revised What are the advantages and disadvantages between gas, liquid and solid fuel?
added 136 characters in body
Dec
19
answered Should I be more careful about postholing during winter hikes?
Dec
19
comment How long does mayonnaise last unrefrigerated in the back-country?
Mayo, really!? Some things simply aren't appropriate for backpacking trips. My answer is to bring something else. There are plenty of foods. Is it really that big a deal to not have mayo for a few days? You wouldn't bring cans of diet coke, milk, ice cream, and a lot of other stuff either. What's the big deal?
Dec
19
revised Trail maintenance: what is considered inappropriate when maintaining a trail?
added 1843 characters in body
Dec
18
comment What is the proper way to tarp tent to avoid condensation?
@Russell: Radiational cooling is a lesser effect, and pretty much a non-issue under a heavy canopy of leaves. Also, light or dark in the visible range does not necessarily map to reflectance in the IR range, which would be used by radiational cooling. Blue means it reflects at the short blue wavelengths and not at the longer red ones, so quite possibly is quite dark in IR.