HELP...Looking for a really smart person.

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I have an application puzzle for some smart guys or gals. I have a pool and the pool light went out. To fix the light, I have to waste 12K gallons of water. The light is below water level and we must drain about half the water out. The existing light is a flood light. Well, I feel wasting 12K gallons of water is such a waste of water and to only get 3 years of use out of the new bulb... I will have to waste another 12K... I considered upgrading the light to an led flood light when it struck me. What if I could use the existing 2 - 12ga with ground cable and control an AVR with these wires as well as supply power (dc).

So you smart guys or gals, is there a way to have two avr chips connected over a dc power lines using the existing wires that will supply power and control signal. I was thinking about using tri-color leds in conjunction with this arrangement so my wife will be happy ajusting the color to her hearts content. javascript:emoticon(':lol:')

Thanks in advance.
-Foxboroman-

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Not the correct forum for this post

I am sure the current light is on a GFCI for safety, I would not monkey with the wiring, suck the 12k of water out at the end of the season and put the LED flood in it's place if one exists. Replace the water.

Inexpensive alternative is to buy your wife some different colored swim goggles to change the color to her hearts content(That is me being a smart ass)

I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie

 

"The critical shortage here is not stuff, but time." - Johan Ekdahl

 

"Step N is required before you can do step N+1!" - ka7ehk

 

"If you want a career with a known path - become an undertaker. Dead people don't sue!" - Kartman

"Why is there a "Highway to Hell" and only a "Stairway to Heaven"? A prediction of the expected traffic load?"  - Lee "theusch"

 

Speak sweetly. It makes your words easier to digest when at a later date you have to eat them ;-)  - Source Unknown

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB, RSLogix user

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jgmdesign wrote:
Not the correct forum for this post

I am sure the current light is on a GFCI for safety, I would not monkey with the wiring, suck the 12k of water out at the end of the season and put the LED flood in it's place if one exists. Replace the water.

Inexpensive alternative is to buy your wife some different colored swim goggles to change the color to her hearts content(That is me being a smart ass)

Not the correct forum? Where is the right place to ask a general question about POE(DC) / IC2 communication interface with a tri-color led controller schematic? Also, where do I ask questions about DC GFI circuit protection?

About off season, I live in Florida and the pool is heated. So, I just waste water to change a bulb.

I like your idea of different colored goggles... But, how about I drain the pool through clear PVC and film the waste water draining in my lawn posting, it on youtube under "to all the worlds thirsty suckers out there..." and let them envy my rich American wasteful habits... (Me being mean sarcastic.)

Thanks for your input,
-Foxboroman-

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You did not ask about the GFCI, I mentioned it so as not to fry anyones butt

The general electronics forum is the one I was refering to

I like the Youtube idea

Jim

I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie

 

"The critical shortage here is not stuff, but time." - Johan Ekdahl

 

"Step N is required before you can do step N+1!" - ka7ehk

 

"If you want a career with a known path - become an undertaker. Dead people don't sue!" - Kartman

"Why is there a "Highway to Hell" and only a "Stairway to Heaven"? A prediction of the expected traffic load?"  - Lee "theusch"

 

Speak sweetly. It makes your words easier to digest when at a later date you have to eat them ;-)  - Source Unknown

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB, RSLogix user

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Foxboroman,

Usually these lights are called 'wet niche' lights and are removable without draining the water! In other words, you should find that after removing the light there is enough cord on connected to allow the 'wet niche' housing to be serviced OUT OF THE WATER at poolside! As far as the replacement goes, my folks used a fiber optic light kit on their pool. The light source is adjacent to the filter and even has a motorized color wheel. These light are completely safe and come with many different options! Remember, BE SAFE near that water!!

Good Luck, John

Just some guy

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Quote:

Not the correct forum? Where is the right place to ask a general question about POE(DC) / IC2 communication interface with a tri-color led controller schematic?

Huh? Was that tongue-in-cheek? Or do I need to roll out the surly curmudgeon?

You can put lipstick on a pig, but it is still a pig.

I've never met a pig I didn't like, as long as you have some salt and pepper.

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theusch wrote:
Quote:

Not the correct forum? Where is the right place to ask a general question about POE(DC) / IC2 communication interface with a tri-color led controller schematic?

Huh? Was that tongue-in-cheek? Or do I need to roll out the surly curmudgeon?

I did not mean any precieved ill will or malevolent tone. Should have used the Emoticons... I read over the different topics and did not see the where to post questions about a flux capacitor.

Seriously, I was thinking of using IC2 to connect two controllers (MEGA-something) over a single pair conductor that also serves as power leds to my TRI-color leds. So, tongue-in-cheek/ general idea/ stream of consciences/ cosmic dispersal of bovine dropping (like bs).

I feel like a caveman asking for instructions for building a house.

I am looking for someone that has done this task already or something similarly. I hate reinventing the wheel. Ugggg. So, I though a "smart guy" could help. Uggggg.

Can you help?

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That doesn't address the situation of 12k gallons of water, does it? That looked like the topic to me and to others.

Dig a trench behind the light for an access. You'll need it anyway for your LED light, right?

You can put lipstick on a pig, but it is still a pig.

I've never met a pig I didn't like, as long as you have some salt and pepper.

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Well, I guess I'm just not that smart... I'd just empty the pool, do the work that needs to be done, fill the pool back up and, be done with it.

You can avoid reality, for a while.  But you can't avoid the consequences of reality! - C.W. Livingston

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Assuming that the light is not surface serviceable, as mentioned by johnrk above. (I'd be surprised if it wasn't) I'd look at building a servicing box, that can be submerged into the water, and held against the wall, and then drained. once drained, the water pressure outside the box should hold it in place, an appropriate gasket around the edge, should minimize leakage back in. Now you have a dry access to the light, without draining a single gallon out of the pool.

Writing code is like having sex.... make one little mistake, and you're supporting it for life.

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Cool. The really smart person has spoken. As a lazy guy, much less work than the trench.

You can put lipstick on a pig, but it is still a pig.

I've never met a pig I didn't like, as long as you have some salt and pepper.

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I liked Carl's idea. Nothing fancy.

You can also work on those pretty lights for wife too :wink:

I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie

 

"The critical shortage here is not stuff, but time." - Johan Ekdahl

 

"Step N is required before you can do step N+1!" - ka7ehk

 

"If you want a career with a known path - become an undertaker. Dead people don't sue!" - Kartman

"Why is there a "Highway to Hell" and only a "Stairway to Heaven"? A prediction of the expected traffic load?"  - Lee "theusch"

 

Speak sweetly. It makes your words easier to digest when at a later date you have to eat them ;-)  - Source Unknown

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB, RSLogix user

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Or if you're REALLY lazy, simply stop topping the pool off with water weekly. Let the natural evaporation take care of the draining for you... you should get the water low enough in 4-5 months. :P

Writing code is like having sex.... make one little mistake, and you're supporting it for life.

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Water costs $6 for 1000 gal in Orlando.. 12K gallons would cost $72. Suck it up. Less than a service call.

Imagecraft compiler user

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The middle of the page gives instructions:

http://www.poolcenter.com/electr...

Regards,
Steve A.

The Board helps those that help themselves.

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> is there a way to have two avr chips connected over a dc power
> lines using the existing wires that will supply power and control signal.

I've only heard about it (so I cannot tell you exactly), but I think the LIN
bus is something like that. You might try googling for it. It's extensively
used inside of cars, and there are dedicated ICs available as transceivers.

Jörg Wunsch

Please don't send me PMs, use email if you want to approach me personally.

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communicate with controllers:
* Maybe you can use some IR transmitter
* radio transmitter
* frequency modulated over power lines...

Klaus
********************************
Look at: www.megausb.de (German)
********************************

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What about drilling a hole straight to the existing lights housing, and sticking lightning bugs in there? The housing should be sealed right now so there wont be any water leakeage at all. Then once the lightnong bugs die, a gialt anteater can suck out the carcasses. You then reload the chamber of death with new bugs. Spray paint the new bugs a different color as you want to be able to have variety. :wink: :twisted:

I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie

 

"The critical shortage here is not stuff, but time." - Johan Ekdahl

 

"Step N is required before you can do step N+1!" - ka7ehk

 

"If you want a career with a known path - become an undertaker. Dead people don't sue!" - Kartman

"Why is there a "Highway to Hell" and only a "Stairway to Heaven"? A prediction of the expected traffic load?"  - Lee "theusch"

 

Speak sweetly. It makes your words easier to digest when at a later date you have to eat them ;-)  - Source Unknown

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB, RSLogix user

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jgmdesign wrote:
What about drilling a hole straight to the existing lights housing, and sticking lightning bugs in there? The housing should be sealed right now so there wont be any water leakeage at all. Then once the lightnong bugs die, a gialt anteater can suck out the carcasses. You then reload the chamber of death with new bugs. Spray paint the new bugs a different color as you want to be able to have variety. :wink: :twisted:

Don't get out much, do you?
Let's build on this......
I like the lightning bug concept, but live bugs are too difficult to deal with. How about I drive really fast in my Mustang, super charger screaming all the way, with a big net out hanging outside the window. This should capture a good sample of bugs. Next, I will use the blender to mix a frozen margarita for you and me and then placed the bugs in the blender. I think the order of operation is important here. Next, we can extract all the chemilumenescent components from the bugs. So we don't waste anything, I will dry the remaining material and save it.
So, next we will retrieve the light bulb, drill out the element and fill the bulb with the chemilumenescent material. Then, plug the hole with candle wax and duct tape. This assembly will create an environmentally friendly renewable light source. This will save me from drilling holes in the pool like some have suggested and should not require any power. The power I save can be used to power a bug zapper to "collect more" bugs. Next, we can take the dried material (bug parts) and smoke them in our peace pipe.

What say you, want to smoke some dried bug material with me? Or have you had enough already?
javascript:emoticon(':lol:')

Seriously, will "TWI" work on over dc power lines?

Thanks for all you suggestions!
-Foxboroman- :lol:

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Koshchi wrote:
The middle of the page gives instructions:

http://www.poolcenter.com/electr...

Thanks for the information...I was out of town when the electrican installed the light. This is good info.
-Foxboroman-

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bobgardner wrote:
Water costs $6 for 1000 gal in Orlando.. 12K gallons would cost $72. Suck it up. Less than a service call.

it's not the money, it's the concept of wasting the water and the potential to use the AVR chip to control another chip over the existing power wire, all the while, powering the LED lights... Come on, I sure you can see the challenge in that? BTW: I happen to know you are one of the "smart" guys (I've read several of your posts). Can I use TWI to connect two AVR chips, say MEGA32, over existing 12GA wires? And, instead of powering the light with 120VAC, I will send 24VDC to the remote chip and light driver. By the existing light switch, install a NEMA X- RT box with the "master chip and 24VDC power supply" inside it. Remote chip and leds will be located in the existing light assembly. I am more a software guy than a hardware guy.

-Foxboroman-

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glitch wrote:
Assuming that the light is not surface serviceable, as mentioned by johnrk above. (I'd be surprised if it wasn't) I'd look at building a servicing box, that can be submerged into the water, and held against the wall, and then drained. once drained, the water pressure outside the box should hold it in place, an appropriate gasket around the edge, should minimize leakage back in. Now you have a dry access to the light, without draining a single gallon out of the pool.

Are you or were you a submarine Sailor? You are the man! javascript:emoticon('8)')
I called the builder about the "Wet niche" idea. But, I like your idea, being an X-submarier myself. It's got Sea Hunt meets "Voyage to the bottom of the sea" written all over it.
Thanks,
-Foxboroman(ss)-

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No I wasn't ever a submariner... just trying to find a creative way to get at the light, without draining the pool. Note that the wet niche thing is not an idea... it is in the building code... if your pool was built recently, they must have used it, if they built it to code.

As for TWI over the wires, no you can't do it, because you need a common ground (need at least 3 wires, though you will have the earth wire, but for safety I'd leave that one as earth and still keep a separate ground).

Your best hope would be to use some form of single wire protocol (Dallas 1-Wire, USART-TX, Bi-phase). You'll have the DC of the power, and the communications will be an AC component on the DC line, and a common ground. The problem is actually even simpler since communications only ever need to go to the light, there is no need to read anything back.

You might try searching for model trains on the forum, I believe someone had a project in which they sent a control signal, along with power, over the tracks, to control their trains.

Writing code is like having sex.... make one little mistake, and you're supporting it for life.