Circuit Help

[OxiaUK]

Hi,

Im working on a project for my very large aquarium that will do some basic monitoring for me.

I need a common alarm sounder to sound and for it to light the corresponding indicator if any of the following happen:

high temp,
low temp,
water leak

i have a temp conroller for the hi/low temp signals and a water sensor for the leak detection.

Is it simple to do?

All 12v DC by the way

Thanks

 

[Spark123]

It isn't difficult, a bit more info on what you have got will help.
What are the outputs of the temperature controller? Make and model?
A simple float switch will do for the level.
What sort of supply is it? What markings are on it?

 

[ban-all-sheds]

Im working on a project for my very large aquarium

Jealousy & envy can be such unattractive emotions....


As for the rest, I can't help thinking that asking on an aquarium forum is likely to turn up people who've already done what you want to do, but on the face of it an Arduino would probably be the best thing to base it on.

 

[Spark123]

Why do you need a computer?
A simple temperature trip amp with high and low alarms, a float switch, psu and a buzzer.

 

[ban-all-sheds]

Who has suggested using a computer?

But re your suggestion:

I need a common alarm sounder to sound and for it to light the corresponding indicator

 

[Spark123]

Doesn't an arduino need programming?

You can probably buy off the shelf things that will do the temperature monitoring for not a lot of money.

 

[ban-all-sheds]

It needs code writing, as does any PLC, but I wouldn't say that makes it a computer.

So the guy has something which puts out a signal when the temperature gets too high, one when it gets too low, and a separate something which puts out a signal when the water level drops.

How would you combine the outputs from those to sound a common alarm, and to light specific indicators, and to light the right pair of indicators if two events arise simultaneously?

 

[Spark123]

Until we know what he has it isn't possible to say how it will connect, some trip amps have DPCO relays so you can run two independent circuits. Otherwise you can do it with a few diodes.

What is the official definition of a computer? I always thought it is something that takes an input, process it, outputs accordingly. An Arduino falls into this.

 

[crystal ball]

A computer is a device that can be instructed to carry out an arbitrary set of arithmetic or logical operations automatically. Their ability to follow a sequence of operations, called a program, make computers very flexible and popular. Such computers are used as control systems for a very wide variety of industrial and consumer devices. This includes simple special purpose devices like microwave ovens and remote controls, but more importantly in general purpose devices like personal computers and mobile devices. The internet is run on computers, and connects millions of these other computers

Sounds like a computer to me too, looks like a handy bit of kit though, but yes using relays to sound the alarms etc would be the simplest method

 

[deadshort]

Hi,

Im working on a project for my very large aquarium that will do some basic monitoring for me.

I need a common alarm sounder to sound and for it to light the corresponding indicator if any of the following happen:

high temp,
low temp,
water leak

i have a temp conroller for the hi/low temp signals and a water sensor for the leak detection.

Is it simple to do?

All 12v DC by the way

Thanks

What about loss of power ?

DS

 

[ban-all-sheds]

Can somebody please tell me why we have things called PLCs.

 

[crystal ball]

A programmable logic controller, PLC, or programmable controller is a digital computer used for automation of typically industrial electromechanical processes, such as control of machinery on factory assembly lines, amusement rides, or light fixtures. PLCs are used in many machines, in many industries. PLCs are designed for multiple arrangements of digital and analog inputs and outputs, extended temperature ranges, immunity to electrical noise, and resistance to vibration and impact. Programs to control machine operation are typically stored in battery-backed-up or non-volatile memory. A PLC is an example of a "hard" real-time system since output results must be produced in response to input conditions within a limited time, otherwise unintended operation will result.

This may help

 

[Taylortwocities]

@crystal ball
I know that BAS is more than capable of looking in Wikipedia for himself, without you needing to cut and paste the Wikipedia entry. In fact, he probably wrote it.
Maybe you should think about getting a job as a speech writer for Donald Trump's wife

I think you are missing completely the point of his little quip.

 

[flameport]

3 LEDs and a buzzer.
LED brightness will be reduced if more than one switch is activated, but will still be visible.

 

[crystal ball]

@crystal ball
I know that BAS is more than capable of looking in Wikipedia for himself, without you needing to cut and paste the Wikipedia entry. In fact, he probably wrote it.
Maybe you should think about getting a job as a speech writer for Donald Trump's wife

I think you are missing completely the point of his little quip.

Ah I think you are missing the point of my little quip, maybe you could get a job as BAS's mouthpiece