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ok anyways...back to the subject at hand...waterproofing you ask...well i've decided to put the entire completed project in a waterproof lock and lock like container...it's the simplest solution i can think of at this time...but if anyone else has a better idea i'd love to hear it

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...No back pedaling here, you commented on constrictive input and I think I asked a reasonable question. Thank you for your input on my terse comments, I sometimes get testy. I will tone it down in the future. To answer your questions, from your comments and my experience I believed you were not an Engineer. To answer your question if I am an Engineer, I have two Engineering degrees and a degree in a foreign language. Thank you for asking because my answer allows me to look like an arrogant braggart.

I agree that asking a question to warn someone of the complexity of their project is a good idea. The way you put it didn't come across that way to me, but hopefully that's how the OP took it. Whatever the case, he seems to be getting along nicely with the progress on his idea.

 

I have to say -- whether you believed I was an engineer or not, to make a comment like you did was not only inappropriate, it didn't make sense. I'm not sure why you felt a need to question my credentials though, especially in this context. Had I recommended a particularly risky course of action for the OP, and used my engineering credentials to try to convince him, then I could see why you might ask that.

 

When I was simply making a point about encouraging someone rather than just telling them they didn't know enough to try a challenging project -- that really has nothing to do with the scientific method or my abilities as an engineer. If I've missed where you are coming from, please let me know.

 

I appreciate your being willing to acknowledge that you came across in a poor fashion, so I'll leave it at that.

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ok...just like i think it was capt. bob said on here...2p10t swiches are extremely hard to find...the only thing close i've found is a guy on ebay selling 3p12t switches...which will work...but now i've found some 1p10t switches...but would have to double up on and eliminate the toggle switch...

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no i correct that...i will keep the toggle switch but will have to use 6 1p10t switches

Since you are going that route, would you give any consideration to eliminating the N - W selection function and wiring so ALL 6 of the rotary switches have to be set correctly before the solution is revealed. Both sets of coordinates must be right or you get nothing. It certainly would take a LOT longer to try EVERY possible combination in a brute force attempt.

 

Note: What is to prevent someone from opening up your box and figuring out the correct switch positions from the hard wiring?

Edited by Cardinal Red
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What is to prevent someone from opening up your box and figuring out the correct switch positions from the hard wiring?

Nothing, unless you decide to encapsulate the circuit in epoxy, which isn't a bad idea to prevent corrosion.

That's pretty much standard procedure for electronics subjected to harsh environments.

(Just be careful not to seize the rotary switches when doing this).

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yes i considered eliminating the toggle switch for that function exactly...both combos would have to be correct in order for the LED to light up...and like i said...i will have hints on the cache page as to what the combo's will be...example for N (Houston, Tx area code)...it could be either 281, 713, or 832....this way the cacher isn't sitting there for hours trying to get the correct combo and be tempted to "break" into the box...i do know however that the cachers in my area would do no such thing...i've met 90% of them and speak to them on frequent occations...i can't say for sure what any other cacher would do though..so epoxy would be a nice backup plan...

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Don't you have the Battery Terminal polarities reversed? The Battery is inserted backwards if those polarities are corrected, right?

 

The diagram for the battery is reversed, the labels are correct.

 

If you reverse the polarities on the battery, you'd better flip that LED over as well!

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back on topic:

 

the bigger question is how do you make sure the first solver doesn't leave it in the "solved" position for all future seekers? Seems like some sort of reset at power down is in order. Could linear pots be used to index a 5 digit led? Sorry i'm not an engineer, just suggesting that a more digital system could reset itself at power off.

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back on topic:

 

the bigger question is how do you make sure the first solver doesn't leave it in the "solved" position for all future seekers? Seems like some sort of reset at power down is in order. Could linear pots be used to index a 5 digit led? Sorry i'm not an engineer, just suggesting that a more digital system could reset itself at power off.

 

well first off...i should have put more thought into this before i titled the topic because after much advice from very knowledgable people i have decided to use rotary switches instead of pots....and to answer your other question...i guess i will have to take my chances and make sure to note on the cache page and the container to reset all the switches to the off position before leaving...also i will be placing this cache very close to my house so i will be able to provide daily maintenance if need be...

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ok...this is the latest and greatest of the project...i have only put in one rotary switch so far because after leaving the electronics store we realized that two of them were missing the nuts....in the second picture i show the battery test indicator due to the fact that i will not be able to wire the combo test indicator until i know where i'm going to place the cache and until i install the rest of the switches...next step is figuring out a good way to place the labels on the face of the container...

 

container.jpg

 

containertest.jpg

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Ohm.... while this idea certainly has potential, I'm surprised that I don't see more resistance to it. While I love to see creativity, maintenance and expense are two things that need to be considered. Is this going to be hidden out in the woods, where rain, dirt, leaf mould, snow, rabid cachers, and cold will take their toll?

 

(Edit: Watt was I thinking... of course you have considered those things.)

Edited by knowschad
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Ohm.... while this idea certainly has potential, I'm surprised that I don't see more resistance to it. While I love to see creativity, maintenance and expense are two things that need to be considered. Is this going to be hidden out in the woods, where rain, dirt, leaf mould, snow, rabid cachers, and cold will take their toll?

 

(Edit: Watt was I thinking... of course you have considered those things.)

 

haha...yes i have...and i have come to the conclusion that this container will be in another completely waterproof container and close to the house so i may provide maintenance if need be...however i am working on getting permission to place this on a building outside a masonic lodge nearby...we have another cache in town that's at another masonic lodge and the masons actually keep routine maintenance on it....quite nice of them if you ask me

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Ohm.... while this idea certainly has potential, I'm surprised that I don't see more resistance to it. While I love to see creativity, maintenance and expense are two things that need to be considered. Is this going to be hidden out in the woods, where rain, dirt, leaf mould, snow, rabid cachers, and cold will take their toll?

 

(Edit: Watt was I thinking... of course you have considered those things.)

 

haha...yes i have...and i have come to the conclusion that this container will be in another completely waterproof container and close to the house so i may provide maintenance if need be...however i am working on getting permission to place this on a building outside a masonic lodge nearby...we have another cache in town that's at another masonic lodge and the masons actually keep routine maintenance on it....quite nice of them if you ask me

 

VERY COOL

 

Had a read through this thread when it first popped up but didn't get involved because this kind of thing is way beyond my level of competence (most things are).

 

Assumed it was one of those ideas that would never be put into practice (sorry I doubted you ).

 

But suddenly the thread comes back up and look what you have made!

In such a short time!

How cool is that!

You WERE serious!

 

I would love to find that device to play with in a cache and it's great when someone puts real effort into creating something new and different basically for the entertainment of others.

 

Can't help you with construction ideas but just wanted to add my words of encouragement and ask you keep us posted with pics as the project goes on, as I'll never be able to come and hunt for it in real life.

 

Only one thought - to do it justice, could you find an engraver who could engrave the labels on for you with a white infill? Something like they do on those pet ID discs whch are usually engraved black on a brass disc.

If you could find someone who could do the same but in white it would look really smart and wouldn't wear off.

Just an idea.

 

Good luck with the rest of the project - I'll be watching with interest.

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Ohm.... while this idea certainly has potential, I'm surprised that I don't see more resistance to it. While I love to see creativity, maintenance and expense are two things that need to be considered. Is this going to be hidden out in the woods, where rain, dirt, leaf mould, snow, rabid cachers, and cold will take their toll?

 

(Edit: Watt was I thinking... of course you have considered those things.)

 

haha...yes i have...and i have come to the conclusion that this container will be in another completely waterproof container and close to the house so i may provide maintenance if need be...however i am working on getting permission to place this on a building outside a masonic lodge nearby...we have another cache in town that's at another masonic lodge and the masons actually keep routine maintenance on it....quite nice of them if you ask me

 

VERY COOL

 

Had a read through this thread when it first popped up but didn't get involved because this kind of thing is way beyond my level of competence (most things are).

 

Assumed it was one of those ideas that would never be put into practice (sorry I doubted you ).

 

But suddenly the thread comes back up and look what you have made!

In such a short time!

How cool is that!

You WERE serious!

 

I would love to find that device to play with in a cache and it's great when someone puts real effort into creating something new and different basically for the entertainment of others.

 

Can't help you with construction ideas but just wanted to add my words of encouragement and ask you keep us posted with pics as the project goes on, as I'll never be able to come and hunt for it in real life.

 

Only one thought - to do it justice, could you find an engraver who could engrave the labels on for you with a white infill? Something like they do on those pet ID discs whch are usually engraved black on a brass disc.

If you could find someone who could do the same but in white it would look really smart and wouldn't wear off.

Just an idea.

 

Good luck with the rest of the project - I'll be watching with interest.

 

well thank you for your encouragment...and i will be posting pictures of the end result whenever i may be able to get it done....the engraving idea interests me...if i had the money to do something like that i would definatelly go that route...however i might be doing the decaling the capt. bob mentioned for starters and see how it lasts...you never know...i might be making more of these little boxes

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what about a separate instruction sheet with a visual layout and everything labeled...i kind of like the idea of someone comeing across a blank cache box...might add the the puzzle factor...good idea? bad idea?

 

I think some basic indication of what the device is, but maybe keep it a little cryptic.

For me, full instructions would spoil things a bit.

I'd quite like to be faced with the 'black box of mystery' and have to work out for myself what I had to do with it to get the coordinates I needed.

Sometimes it is nice to be faced with a challenge 'in the field' rather than one to sort out in the comfort of your armchair.

 

One of the most rewarding puzzles I have done is one that the cache page was just a QR code (I had never even seen one before).

Once I worked out what todo with it I was really pleased to get a set of coordinates.

Went to find the cache and it was exactly where the coords said it would be.

When I opened the pot to sign the log I found....a laminated QR code. Nothing else.

 

Of course I knew what it was by now but there I was in the middle of the moors.

 

It was great fun working out that by taking a photo of the code with my digital camera, then going back to the van and using my laptop to upload the image to a web based QR code decoder I could get the next set of coordinates there and then without having to go home.

 

There was no hint in the cache description that there was another bit of decoding to do before the final cache.

 

First reaction when I found the 2nd code : *%$@@ !

Reaction when I had sorted it all out : Brilliant fun !

 

So my vote would be to keep the information and instructions to a minimum and let people work it out for themselves.

 

After all, you can always add hints later on.

 

Keep going with this one, it's coming together really well !

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well thank you for your encouragment...and i will be posting pictures of the end result whenever i may be able to get it done....the engraving idea interests me...if i had the money to do something like that i would definatelly go that route...however i might be doing the decaling the capt. bob mentioned for starters and see how it lasts...you never know...i might be making more of these little boxes

 

Might be worth having a word with your local trophy engraver (sports shop?) and explaining what it is all about.

 

Sometimes people can be quite helpful when they are presented with something a bit different to their normal mundane day to day work. And sometimes they might do you a good deal if they are interested in what you are doing and want to be a small part of it.

 

No harm in asking :)

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yeah...i love a nice challenge...i just finished installing the other two rotary switches and knobs....so this is what i'm thinking....

 

you come up to the first cache and open the container...and you see something something that says

 

1 = (6 numbers ie: 275194)

2 = (6 numbers ie: 490851)

3 = (6 numbers ie: 693812)

N coords

W coords

 

note: the 6 numbers is due to the fact that the only rotary switches i could find only have 6 positions...each number is relavent to a single position...ie: position one on the switch = the number 2, position two (one click clockwise) = 7...and so on...

 

so with that said you have these strings of numbers written down or memorized..(haha)...and you go to the next set of given coordinates....this is when you come upon the little "blank" box (with a diagram labeling the battery test indicator, the combo test indicator, the toggle switch to switch between solving the N and W coords, and the rotary switches 1, 2, and 3 from left to right)...N and W coords will be missing three numbers...the others will be given...

 

the hint on the cache page and possibily the title will be area codes (three numbers for three rotary switches)....lets say hint for N = houston, tx area code...well you have 713, 281, and 832...so you have three different combo possibilities for N...lets say 281 is the 3 missing numbers from the final N coords....you would simply dial the three switches to read

 

1st = 2

2nd = 8

3rd = 1

 

275194

490851

693812

 

and the same goes for finding the W coords...toggle the toggle switch down and then use the same string of numbers....lets say the three missing numbers for west are

 

713

275194

490851

693812

 

and there you go...you have now solved the puzzle and know the missing numbers of the final stage...these numbers i used are only examples and will not be used...i won't know the missing numbers until i find where i'm going to hide the final stage...

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yeah...i love a nice challenge...i just finished installing the other two rotary switches and knobs....so this is what i'm thinking....

...

 

You lost me a bit with the area codes part, but it is early and I haven't had a coffee yet.

 

To avoid complete confusion, I would label the switches with letters and give the missing coordinates letters.

 

So you would give: N50 AB.C23

and then label the switches A, B & C

then

W004 CA.B45

 

That would still take a lot of working out - long enough to sit and have a sandwich - as there are lots of combinations!

 

Does that make sense (apart from the N50 and W004 bit, which are the northings and westings where I live :o )

 

Like I said, it is early here!

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yeah...i love a nice challenge...i just finished installing the other two rotary switches and knobs....so this is what i'm thinking....

...

 

You lost me a bit with the area codes part, but it is early and I haven't had a coffee yet.

 

To avoid complete confusion, I would label the switches with letters and give the missing coordinates letters.

 

So you would give: N50 AB.C23

and then label the switches A, B & C

then

W004 CA.B45

 

That would still take a lot of working out - long enough to sit and have a sandwich - as there are lots of combinations!

 

Does that make sense (apart from the N50 and W004 bit, which are the northings and westings where I live :o )

 

Like I said, it is early here!

 

you've kind of got the concept...i'm only using area codes because it's 3 number combos that i could use for the hints...in my area we have three different area codes...that way there's not soooooo many number combo's to run through...

switches would remain the A, B, C label and the six numbers would go around the switch...each number for each position...for example i would give

 

N50 49.ABC

W004 94.ABC

 

lets say the missing numbers for N are 123....you would dial the three switches to represent 123...A = 1, B = 2, C = 3...press the red button on the left (the combo test indicator and the LED would light up...if the combo is incorrect nothing will light up)

you would then toggle the toggle switch on the left to the down position and then solve for W the same way...

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but i'm also thinking if i decide to leave the box blank then the cacher would have to remember the numbers given for each rotary swith and count the clicks to find out what possition they are in....so lets say the numbers i give for switch A are 568902....possition 4 on the switch would equal the number 9

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you've kind of got the concept...i'm only using area codes because it's 3 number combos that i could use for the hints...in my area we have three different area codes...that way there's not soooooo many number combo's to run through...

switches would remain the A, B, C label and the six numbers would go around the switch...each number for each position...for example i would give

 

N50 49.ABC

W004 94.ABC

 

lets say the missing numbers for N are 123....you would dial the three switches to represent 123...A = 1, B = 2, C = 3...press the red button on the left (the combo test indicator and the LED would light up...if the combo is incorrect nothing will light up)

you would then toggle the toggle switch on the left to the down position and then solve for W the same way...

 

I'm with you now.

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but i'm also thinking if i decide to leave the box blank then the cacher would have to remember the numbers given for each rotary swith and count the clicks to find out what possition they are in....so lets say the numbers i give for switch A are 568902....possition 4 on the switch would equal the number 9

 

That could be more frustrating than satisfying :o

 

With all the possible combinations of 3 switches each having 6 possible positions the task could be complex enough without having to remember which position was which number.

 

Just my opinion.

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note: the 6 numbers is due to the fact that the only rotary switches i could find only have 6 positions...each number is relavent to a single position...ie: position one on the switch = the number 2, position two (one click clockwise) = 7...and so on...

 

First off, I think your idea is great!

 

Now, with the 6 position rotary switches, it brings the number of combinations down to 216 (if I'm calculating correctly) which is quite reasonable. That's just hard enough, but still possible to brute force by holding the "check" button down and cycling through in sequence.

 

Another variation that occurred to me this morning is to wire all the incorrect switch positions together and feed them through the "check" button to a RED LED and the correct switch positions together to a GREEN LED. With this variation, we could elliminate the "check battery" button and still give an indication to the cacher that the battery was good even if they had the wrong combination.

 

// CtC

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note: the 6 numbers is due to the fact that the only rotary switches i could find only have 6 positions...each number is relavent to a single position...ie: position one on the switch = the number 2, position two (one click clockwise) = 7...and so on...

 

First off, I think your idea is great!

 

Now, with the 6 position rotary switches, it brings the number of combinations down to 216 (if I'm calculating correctly) which is quite reasonable. That's just hard enough, but still possible to brute force by holding the "check" button down and cycling through in sequence.

 

Another variation that occurred to me this morning is to wire all the incorrect switch positions together and feed them through the "check" button to a RED LED and the correct switch positions together to a GREEN LED. With this variation, we could elliminate the "check battery" button and still give an indication to the cacher that the battery was good even if they had the wrong combination.

 

// CtC

 

i thought about this as well and i love the idea...the only downfall....my dad and i went to a local electronics store that sells used parts and the only rotary switches we could find were 4 pole 6 position switches...each deck has 2 poles on it...so all together there are a ton of pins that i would have to connect to the red LED to make that work...i tried finding 2 pole 10 position switches but they are very rare...there's only one source i know of right now that is selling 4 of them on ebay from overseas...and i might get them for the next box i make....and about the number of combo's...i'm going to use area codes as hints....for example...the hint for N will say "a houston, tx area code"...in houston we have 3 different area codes 281, 713, and 832...so one of those combos of numbers will be the missing numbers in the N coords....i will do the same thing for the W coords but with a different city for the hint....possibily a city that has 5 area codes...this will also save battery life but still keep the puzzle at a somewhat difficult rating...(dial in 281, test, nothing, dial in 713, test nothing, dial in 832, test, LED lights up....you have your missing number for N)...these will not be the numbers i use though because i don't know where i'm placing the final yet...

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For labels: Craft stores like Michael's or AC Moore sell rub-on transfer letters. They come in several sizes and fonts, and if one is careful when applying them the results look very professional.

 

i'm really considering what capt bob had posted....dry transfer decals or something on the lines of what you just said...after putting the letters on i may end up putting on a coat of poly u or clear coat paint...

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My electrical knowledge is extremely lacking, so I didn't have any good advice to give, but I wanted to say that I really admire your creativity, and this is extremely cool :o

 

thank you for your encouraging words...but honestly i don't think i could have done this without the help of some people on here that drew up a schematic for my idea...(see earlier posts)

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I have no idea what you guys are talking about - none

 

I'm just wondering if the finished product here is going to look like a bomb. All the little flashing lights and all...I dunno someone's gonna 9-1-1 that thing.

 

It's going to be inside a cache box, which I imagine will be suitably identified as such with all the stickers and notices. And the lights will only come on when someone plugs a battery into it.

 

The guy's doing ok. In my opinion.

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I have no idea what you guys are talking about - none

 

I'm just wondering if the finished product here is going to look like a bomb. All the little flashing lights and all...I dunno someone's gonna 9-1-1 that thing.

 

It's going to be inside a cache box, which I imagine will be suitably identified as such with all the stickers and notices. And the lights will only come on when someone plugs a battery into it.

 

The guy's doing ok. In my opinion.

 

thanks man...and yes it is going to be in another box with proper labeling...i might even put "this is not a bomb" on it...HAHA...kidding on that one...but the green LED light will only light up in two situations...1. if there is a good battery and you press the test battery button...2. if you have the right combination dialed in and you press the test combo button...

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just added a geocache label at the top left and labeled the rotary switches with A, B, and C

 

Thanks for the update, that's looking superb.

 

Wish I could make something that looks that tidy. Mine would be all scratched already where I'd thrown it against a wall in frustration. And the letters wouldn't be on straight :)

 

You've done really well (and I don't mean that in a patronising way).

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just added a geocache label at the top left and labeled the rotary switches with A, B, and C

 

Thanks for the update, that's looking superb.

 

Wish I could make something that looks that tidy. Mine would be all scratched already where I'd thrown it against a wall in frustration. And the letters wouldn't be on straight :)

 

You've done really well (and I don't mean that in a patronising way).

 

well again..i really appreciate it...pretty soon i'll be taking some pictures with the canon t2i...and i'm hoping it will be complete by then...

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