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181  Forum 2005-2010 (read only) / Bar Sport / Re: The mystery of the website traffic SOLVED on: September 10, 2010, 10:22:57 pm
Cool, so if I hit refresh you get another hit, or probably two as the image displays twice!

Yep, that's how it works. It gets really bad if you post a picture on your WS that goes viral and every blog and their dog decides to link it. Our commercial site has a hotlink disallow in the htaccess file because of being treated as an image repository.
182  Forum 2005-2010 (read only) / Bar Sport / Re: How does this work? (Voltage question) on: September 13, 2010, 12:09:26 am
The RedRock Solar Panel control system uses the photovoltaic properties of LEDs as sun position sensors for the linear actuator controller that keeps your panel facing the sun. The LEDs are positioned with about a 90 degree angle between their axii and the differential in voltage feeds into a Schmitt trigger array that drives an H-bridge.
183  Forum 2005-2010 (read only) / Bar Sport / Re: Ouch... :( on: August 17, 2010, 11:56:18 pm

I can one up you on that. I was working in the summer heat drinking off a half gallon of water an hour keeping my coveralls well saturated with sweat (salt water, see where this is going?) and decided as I was getting a bit tired to throw my leg up over the log truck stinger I was welding on and sat straddle the thing. I struck an arc and burned off the first stick, reached into my leg pocket for the second and stuffed it into the jaws of the electrode holder. I kind of don't really remember what made contact, but the grounding was through some rather sensitive parts. Let's say I knew better, but the importance of keeping yourself out of the circuit even when dead tired and not thinking too clearly will always be remembered.

The worst was grabbing a propane torch with a faulty valve that sat idling in the middle of the shop floor. The third degree burns and pain that resulted were only equaled by passing a kidney stone a year later. Ice is your friend, alcohol to disinfect and get yourself a bottle of that aloe stuff, wrap a washcloth around as much ice as will fit, coat it with the aloe gel, grab hold and swear as necessary.
184  Forum 2005-2010 (read only) / Bar Sport / Re: What was your first OS? on: April 22, 2010, 01:15:25 am
Apple II, Trash80, CP/M
185  Forum 2005-2010 (read only) / Bar Sport / Re: Smallest servo? on: July 05, 2010, 02:21:03 am
Smallest Hitec servos

HS-35HD Ultra Nano  Size in Inches:      0.74 x 0.30 x 0.62
186  Forum 2005-2010 (read only) / Bar Sport / Re: Find the Arduino in this circuit[ch8207] on: April 22, 2010, 12:13:10 pm
Don't let the magic smoke out!

Thanks to paying tribute to an old army/navy explanation of how electronics really works. All ICs and other componoents contain a finite amount of smoke, which if released causes circuit failure.  smiley-grin

187  Forum 2005-2010 (read only) / Bar Sport / Re: One of those days... on: June 06, 2010, 03:21:24 pm

Yep, offsite backup storage is very important. A bank safety deposit box for long term, home lockbox for the transient day-to-day with exchange to the safety deposit box the next day kind of takes care of that. As well as internet storage of your choice if you trust them...
188  Forum 2005-2010 (read only) / Bar Sport / Re: One of those days... on: June 05, 2010, 04:29:56 pm
The joy of the impermanence of digital data in the real world.  ;D

Tape backup? Seriously, even when buying the most expensive equipment and tapes, I always had it fail when it was most needed and ended up using a secondary backup system to do restores.

DVDs are untrustworthy unless you do a less than maximum speed write to allow the laser time to burn the bits and then do a data verify after the disk is written.

Which leaves you to using some sort of USB hard disk method to do backups, preferrably two separate ones so you don't get bitten by hardware failure of either device (once again bloating expense and time required).

And have yet another system where you can do periodic data restoration and comparison to make sure your backup method A) works and B) is capable of restoring the data to a new system. Nothing stunk so much as having the need to restore an old tape and finding that in the duration, head wear and tolerance meant the tracks were displaced so the tape was unreadable, despite the fact you could read one done last week. One particularly painful restore required about 5 retensions to get one good read off the tape, after which it failed completely to be readable. DAT cured that problem, only to bring on a new set of failure modes.

I've come to believe in data spew, throw it in as many locations as possible and rebuild the core storage from the distribution when the system failure occurs. If something happens and takes the whole building out, you're not much going to care anyway.

And also learn to recognize garbage data needs to just be bitbucketed. If it isn't there, it ceases to be a concern.
189  Forum 2005-2010 (read only) / Bar Sport / Re: Recovering a hosed Cisco router on: May 31, 2010, 01:12:30 am
Heh, the intuitive nature of IOS  ;D and the real secret as to why Cisco router propellerheads used to make a lot of money. Not because what you're doing is complex, but because the command line can be quite obtuse. Try working with Tadiran phone systems sometime "spew emoticon needed". Glad you got it working...
190  Forum 2005-2010 (read only) / Bar Sport / Re: Recovering a hosed Cisco router on: May 29, 2010, 11:19:53 pm
Welcome to the used Cisco market. Consider yourself lucky they'll offer you a service contract on old equipment. It used to be impossible to get one unless you bought new equipment and kept proof of ownership if you let it lapse. It's likely the equipment specific IOS is available from them, but then you pay :o; my ASA-5505 started out at $100 and is $75/year. But then I use it for work...

Or, you could buy a second working one off e-bay and follow these instructions
191  Forum 2005-2010 (read only) / Bar Sport / Re: where to buy 24 awg stranded wire? on: May 22, 2010, 08:08:01 pm
Old monitor extender, serial and printer cables, everything's converted to USB and there are plenty of them that haven't been thrown out yet. Good source of 22 or 24 gauge stranded.

It's probably too late for that treasure trove known as serial terminal wiring, I've pulled a couple hundred feet of 25 and 9 strand serial cable out in LAN conversions over the years.
192  Forum 2005-2010 (read only) / Bar Sport / Re: Coding under influence... on: April 24, 2010, 09:48:13 pm
From watching programmers during the early days of personal computing...

Coding under the influence of Cannabis, eh who gives a darn, we'll get the project done sometime this decade.

Coding under the influence of Alcohol, after 20 recompiles, finally realize the syntax error is a misplaced curly brace and two missing semicolons so blindingly obvious your toddler would have found it, still doesn't work as the logic is out of whack. Dries out the next day and smacks forehead after looking at a 20 layer deep nested if statement and realizing it can be replaced by 10 lines of code.

Coding under the influence of Crystal meth and cocaine, starts out well, lots seemingly gets done, blows up somewhere around 14 hours later and all work has to be completely redone two days later when the person has come down off the jag. Needs to become a yard maintenance person after about three years as their mind no longer functions well enough to code. smiley-lol
193  Forum 2005-2010 (read only) / Bar Sport / Re: Java Circuit Simulator on: February 07, 2010, 05:46:51 pm
And every time anyone in the future asks about driving relays, I will give them this post to explain what the clamp diode does...

Shows how inductive kickback gets harmlessly routed when the switch opens, instead of hammering your 5 volt device with a 100 volt pulse.
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