Rich in NEPA
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Posts posted by Rich in NEPA
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~Rich in NEPA~
--- A man with a GPS receiver knows where he is; a man with two GPS receivers is never sure. ---
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quote:
Originally posted by thegeorgefamily:On my Garmin GPSMAP76S, there is a little circle that moves around the outer horizon ring on the sat status page.
Eric, I agree with EraSeek. I believe the open circle on the horizon ring does indeed indicate your current or last known heading when your GPS Information Page is set to display North Up. The Garmin manuals (hardcopy or online) don't seem to mention this.
Cheers ...
~Rich in NEPA~
--- A man with a GPS receiver knows where he is; a man with two GPS receivers is never sure. ---
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quote:
Originally posted by lowracer:Have a Nice Day!
Just make sure to have it approved first.
Cheers ...
~Rich in NEPA~
--- A man with a GPS receiver knows where he is; a man with two GPS receivers is never sure. ---
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~Rich in NEPA~
--- A man with a GPS receiver knows where he is; a man with two GPS receivers is never sure. ---
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~Rich in NEPA~
--- I'm not really a electrical engineer, but I did stay at a Holiday Inn Express last night. ---
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Originally posted by Prime Suspect:Despite what was posted here, NEVER purposely run down NiMH batteries all the way down. This can permanently damage them.
Howdy, PS! I'm not trying to be argumentative, but actually a single cell can be discharged completely without harming it. The problem comes when you are dealing with a "battery." (It really is a matter of semantics here.) By definition a battery is typically two or more cells connected in series and/or parallel. For example, if your GPSr, flashlight, radio, etc., takes 4 cells, those 4 cells taken together comprise the battery. In addition, it is very difficult and/or too expensive when building a battery to match the cells so that they all have exactly the same capacity. Therefore, when two or more cells are used in series in a battery and you run the battery down completely, at some point one of those cells will reach zero volts before the others. When this happens, that cell experiences a reverse voltage across it and, depending on the degree, it damages the cell reducing it's capacity and causing even more of a mismatch. Continued deep discharging will eventually kill the cell completely, and subsequently the entire battery itself (or in the case of your GPSr, the "set" of cells you are using in it) will become useless.
The general recommendation is to discharge a battery only to a level of roughly 0.9 to 1.0 volt per cell. Most recently designed electronic devices are designed to shut down automatically when this battery voltage level is reached. This prevents any damage due to inadvertent deep-discharging.
Hope this helps.
Cheers ...
~Rich in NEPA~
--- A man with a GPS receiver knows where he is; a man with two GPS receivers is never sure. ---
[This message was edited by Rich in NEPA on June 23, 2003 at 04:21 PM.]
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quote:
Originally posted by Renegade Knight:It would be best to explain what the heck it really is. My NiCAD's do have a memory effect due to poor usage habits. Call a rose by any other name and the result is the same. You bleed when you use it wrong.
The explanation is right there in front of your nose!
All you have to do is read.Once again let me state: you are NOT experiencing "memory effect" no matter what the manufacturers' advertising lackies try to convince you of. Overcharging, and to a degree overheating and overdischarging (when one or more cells in a "battery" is depeleted before the others, and the voltage across it reverses), causes voltage depression—i.e., loss of capacity due to damage to the cell which is for the most part irreversible. This is not the same thing as the so called memory effect. It affects all rechargeable battery technologies. To be fair, NiCad cells are actually a little more tolerant of abuse than NiMH cells.
Cheers ...~Rich in NEPA~
--- A man with a GPS receiver knows where he is; a man with two GPS receivers is never sure. ---
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Cheers ...
~Rich in NEPA~
--- A man with a GPS receiver knows where he is; a man with two GPS receivers is never sure. ---
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Cheers ...
~Rich in NEPA~
--- A man with a GPS receiver knows where he is; a man with two GPS receivers is never sure. ---
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The Hottest Setup on the market right now! Go for combo package with the new Powerex 2200mAH NiMH rechargeables.
Cheers ...
~Rich in NEPA~
--- A man with a GPS receiver knows where he is; a man with two GPS receivers is never sure. ---
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Rest assured it's definitely not me. I have much higher aspirations—like being King of the Planet. Then you'd see some REAL changes!
~Rich in NEPA~
--- A man with a GPS receiver knows where he is; a man with two GPS receivers is never sure. ---
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It's really quite simple.
There are (2 x pi) radians in a circle, such that:
1 radian = 180/pi degrees, or:
1 degree = pi/180 radians, or:
1 radian = approximately 57°17'44.9".
~Rich in NEPA~
--- A man with a GPS receiver knows where he is; a man with two GPS receivers is never sure. ---
[Edited typo—I meant " instead of ' for seconds above.]
[This message was edited by Rich in NEPA on June 01, 2003 at 06:19 AM.]
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~Rich in NEPA~
--- A man with a GPS receiver knows where he is; a man with two GPS receivers is never sure. ---
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--- A man with a GPS receiver knows where he is; a man with two GPS receivers is never sure. ---
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ALL SUMMER IN A DAY
By Ray Bradbury
"Ready?"
"Ready?"
"Now?"
"Soon."
"Do the scientists really know? Will it happen today, will it?"
"Look, look; see for yourself!"
The children pressed to each other like so many roses, so many weeds,
intermixed, peering out for a look at the hidden sun.
It rained.
"It's stopping, it's stopping!"
"Yes, yes!"
All day yesterday they had read in class about the sun.
About how like a lemon it was, and how hot. And they had written small stories
or essays or poems about it:
I think the sun is a flower,
That blooms for just one hour.
That was Margot's poem, read in a quiet voice in the still classroom while the
rain was falling outside.
"Aw, you didn't write that!" protested one of the boys.
"I did," said Margot. "I did."
"William!" said the teacher.
But that was yesterday. Now the rain was slackening, and the children were
crushed in the great thick windows.
"Where's teacher?"
"She'll be back."
"She'd better hurry, we'll miss it!"
They turned on themselves; like a feverish wheel, all tumbling spokes.
Margot stood alone. She was a very frail girl who looked as if she had been lost
in the rain for years and the rain had washed out the blue from her eyes and the red from
her mouth and the yellow from her hair. She was an old photograph dusted from an
album, whitened away, and if she spoke at all her voice would be a ghost. Now she
stood, separate, staring at the rain and the loud wet world beyond the huge glass.
"What're you looking at?" said William.
Margot said nothing.
"Speak when you're spoken to." He gave her a shove. But she did not move;
rather she let herself be moved only by him and nothing else.
They edged away from her, they would not look at her. She felt them go away.
The biggest crime of all was that she had come here only five years ago from
Earth, and she remembered the sun. And they, they had been on Venus all their lives,
and they had been only two years old when last the sun came out and had long since
forgotten the color and heat of it and the way it really was. But Margot remembered.
"It's like a penny," she said once, eyes closed.
"No it's not!" the children cried.
"It's like a fire, " she said, "in the stove."
"You're lying, you don't remember!" cried the children.
There was talk that her father and mother were taking her back to Earth next year;
it seemed vital to her that they do so, though it would mean the loss of thousands of
dollars to her family. And so, the children hated her for all these reasons of big and little
consequence. They hated her pale snow face, her waiting silence, her thinness, and her
possible future.
"Get away!" The boy gave her another push. "What're you waiting for?"
Then, for the first time, she turned and looked at him. And what she was waiting
for was in her eyes.
"Well, don't wait around here!" cried the boy savagely. "You won't see
nothing!"
"Oh, but," Margot whispered, her eyes helpless. "But this is the day, the
scientists predict, they say, they know, the sun . . ."
"All a joke!" said the boy, and seized her roughly. "Hey, everyone, let's put her
in a closet before the teacher comes!"
"No," said Margot, falling back.
They surged about her, caught her up and bore her, protesting, and then pleading,
and then crying, back into a tunnel, a room, a closet, where they slammed and locked the
door. They stood looking at the door and saw it tremble from her beating and throwing
herself against it. They heard her muffled cries. Then, smiling, they turned and went out
and back down the tunnel, just as the teacher arrived.
"Ready, children!" She glanced at her watch.
"Yes!" said everyone.
"Are we all here?"
"Yes!"
The rain slackened still more.
They crowded to the huge door.
The rain stopped.
The sun came out.
The children lay out, laughing, on the jungle mattress, and heard it sigh and
squeak under them, resilient and alive. They ran among the trees, they slipped and fell,
they pushed each other, they played hide-and-seek and tag, but most of all they squinted
at the sun until tears ran down their faces, they put their hands up to that yellowness and
that amazing blueness and they breathed of the fresh, fresh air and listened and listened to
the silence which suspended them in a blessed sea of no sound and no motion. They
looked at everything and savored everything. Then, wildly, like animals escaped from
their caves, they ran and ran in shouting circles. They ran for an hour and did not stop
running.
And then - - -
In the midst of their running one of the girls wailed.
Everyone stopped.
The girl, standing in the open, held out her hand.
"Oh, look, look," she said, trembling.
They came slowly to look at her opened palm
In the center of it, cupped and huge, was a single raindrop.
She began to cry, looking at it.
They glanced quietly at the sky.
"Oh. Oh."
A few cold drops fell on their noses and their cheeks and their mouths. The sun
faded behind a stir of mist. A wind blew cold around them. They turned and started to
walk back toward the underground house, their hands at their sides, their smiles
vanishing away.
"Will it be seven more years?"
"Yes. Seven."
Then one of them gave a little cry.
"Margot!"
"What?"
"She's still in the closet where we locked her."
They walked over to the closet door slowly and stood by it.
Behind the closet door was only silence.
They unlocked the door, even more slowly, and let Margot out.
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Congratulations, Andy, on your one hundreth find! We've run into each other a few times already and it's certainly obvious that you're a serious and dedicated Geocacher. You'll be at your two hundreth before you know it.
Cheers and Happy Bushwhacking!
~Rich in NEPA~
--- A man with a GPS receiver knows where he is; a man with two GPS receivers is never sure. ---
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quote:
LONDON (Reuters) ... The device, which will sit on the trolley handle, will get shoppers to within 20 feet of the desired item. "You may need to go down several aisles," Laidlaw said, "but after all, the thrill is in the hunt, not the item you take."Or, you can simply decrypt the hint.
Cheers ...
~Rich in NEPA~
--- A man with a GPS receiver knows where he is; a man with two GPS receivers is never sure. ---
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~Rich in NEPA~
--- A man with a GPS receiver knows where he is; a man with two GPS receivers is never sure. ---
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Congrats on your 200th! I know the feeling.
Cheers ...
~Rich in NEPA~
--- A man with a GPS receiver knows where he is; a man with two GPS receivers is never sure. ---
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Originally posted by Kewaneh & Shark:I wouldn't change any of the logs you've already made unless you know for sure that it is in fact destroyed. The rule of thumb that 'if you can't actually see it destroyed, don't log it a such' is a good rule to follow. If you're not certain, don't do it.
- Kewaneh
Howdy, K&S! What would your opinion of this one be? It's obviously someone's souvenir now. And, the stability of the setting was questionable to begin with, as you can see in the photos. TIA.
Cheers ...
~Rich in NEPA~
--- A man with a GPS receiver knows where he is; a man with two GPS receivers is never sure. ---
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Originally posted by Bugs and Mustang:This cache has 3 coordinates given to you and then a distance that each cache is from the unknown cache. Given this info it seems that it would be relatively easy to figure out.
It's easy to solve this problem graphically, and you don't even need a map to determine the coordinates of the unknown waypoint. Simply use a sheet of grid paper and scale the X and Y axes to include all the points. In this example each UTM grid square is 1km by 1km with 100-meter subdivisions. You could also add 10-meter subdivisions if your scale is fine enough. Most GPS receivers will resolve UTM coordinates down to 1 meter. You could also solve this algebraically, but I think this is just as good considering the inherent inaccuracies. Hope this helps.
Cheers ...
~Rich in NEPA~
--- A man with a GPS receiver knows where he is; a man with two GPS receivers is never sure. ---
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Nice going. Keep on caching!
Cheers ...
~Rich in NEPA~
--- A man with a GPS receiver knows where he is; a man with two GPS receivers is never sure. ---
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Originally posted by georgeandmary:It's a catch 22, you don't need a nice bike if you don't ride much, but maybe you don't ride much because you have a cheap bike.
Howdy, G&M! I couldn't have expressed it better! I've known quite a few people who really thought they wanted to ride, bought cheap bikes and then were so frustrated with shoddy components, bad shifting, crappy brakes, excessive weight, parts breakage and poor reliability, that they gave it up in no time.
Like the saying goes: "Cheap is cheaper." And I also believe that the typical excuse, "I don't wanna spend a lot of money 'cuz I don't know if I'm gonna like biking," really means: "I don't know what the hell I want!" Once they learn that to get good at something means lots of time and deliberate effort, that becomes the end of that.
Cheers ...
~Rich in NEPA~
--- "Sweat cleanses from the inside. It comes from a place a shower will never reach." ---
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Cheers ...
~Rich in NEPA~
--- People do not "drive" cars, they steer them. People do not "ride" bicycles, they drive them. ---
Waypoint Symbols
in GPS technology and devices
Posted
Howdy, Murph! If you're a do-it-yourselfer there's this hack-the-eTrex website that has a symbol set that you might find useful or interesting. Check out the "eTrex Hacker's Kit," too.
Cheers ...
~Rich in NEPA~
--- A man with a GPS receiver knows where he is; a man with two GPS receivers is never sure. ---