Automatic Light System

[AZZA 5000]

Ok guys this Idea is good ok.
I have already designed the circuit using very few components ok, the whole circuit works, it counts people in and out of rooms, it automatically turns off the light when there is no-one in the room. I know that this design has already been done in hospitals and schools, but not in homes and the design wont be as simple and as cheap as mine.

This circuit is specifically designed to cut your electrical bills on lighting, i could connect a room up with this system for only

[audioguru]

Hi Azza,
Welcome to our forum.
The lights in my home have on-off switches. I use them so I don't waste electricity.
My street has street lights so I don't use the lights outside my home very often.
My lights are almost all low power compact fluorescent bulbs or fluorescent tubes.

[MP]

The Question im asking you is:
If you could save some money on your electrical bill would you spend

[AN920]

Here in the US it is quite common. You buy these inserts and install them into a normal light switch box. It has 3 positions; off-auto-on. The circuit has a sensor to sense movement inside the room and the whole thing costs about $6 and takes about 3 minutes to install.

[AZZA 5000]

Answering too the first reply:
How many people forget to turn the light off when they leave the room?
Lots of people, this will save money.

Secondly, i have thought about intergrating the alarm and heating in with my system as well, so this will make it slightly different from the devices that just turn the light on and off in America.

It has been said that people waste 10% of the energy they use in there home because they leave the light on when the room isnt in use.

 

[AZZA 5000]

I have now encorporated my alarm into the system, so that when it see that there is no one left in the house, it sends a 2 second pulse to the set terminal of the alarm interface. This automatic alarm function can be turned off and on by a SPDT switch.
I have also designed the circuit to lower the house temperature by 2 degrees after a 5 minute delay, but i am having problems finding a input for temperature adjustment on the heating display.
Any Help with this Connection to the heating system problem would be nice?

[audioguru]

Hi Azza,
My compact fluorescent light bulbs save me money on electricity and I turn them off when they aren't needed. Soon I will get "a smart meter" so I can save money by using high power appliances during "off peak" times when electricity costs much less.

My home here in Canada is heated with cheap natural gas. I have a programmable thermostat that turns down the heat at night to save money.

[Gazza]

Hey Azza,

I think this is a great idea, I am all for anything that makes our energy sucking houses more efficient. Although 150 is quite a bit of money, it if works well and it lasts for more than a year, I think it is great.

[AZZA 5000]

Thanks for the good feedback gazza.

In the UK Gas is not cheap. (No-where near cheap)
I will post back in a few weeks time once i have built the system and have tested it. i will let you
all know how it goes.

P.S. How much does a programmable thermostat cost?

AZZA

[audioguru]

I bought a programmable thermostat for my son's new house. It was on sale (half price) for $19.99 and he gets $15.00 back from the natural gas supply company.

I also bought compact fluorescent light bulbs for him. They were also cheap but work well and save a lot of electricity.

[rameshprabha]

yes,I would like to spend money,Please give me the components & circuit ideas....

[AZZA 5000]

Sorry i haven't replied recently, i have been too busy with college work.
Hahaha do you seriously think im going to give you the components and circuit diagrams. 
I have ran into a small problem with this invention. I need to know where i can get an infra red sensor that will detect at least 25cm-35cm any help would be nice?

[Ante]

Wrong attitude = no help!