brightness light control

Thread Starter

pejai

Joined Oct 8, 2012
6
hallo all...
i want to do final year project about energy consumption..
i have problem to control light brightness for automatically...
that anyone know how to solve this problem?:confused:
 

wayneh

Joined Sep 9, 2010
17,496
i have problem to control light brightness for automatically...
What do you mean by "automatic"? Clock? When motion is detected? When the ambient light changes? When electric rates change?

And what do you mean by "brightness"? Off or on, or something in between?
 

Thread Starter

pejai

Joined Oct 8, 2012
6
What do you mean by "automatic"? Clock? When motion is detected? When the ambient light changes? When electric rates change?

And what do you mean by "brightness"? Off or on, or something in between?

emmm....
what i mean for brightness is something in between on and off...
just now i want to control the brightness of the light depend on room brightness...
for example if the room is dark so light will automatically bright...
i hope you understand what i say...=)
 

DickCappels

Joined Aug 21, 2008
10,152
Yes, most of us understand that concept -light dimmers in other words.

What kind of automatic control to you imagine using?

What kind of lights do you want to control?

What do you want to control the lights?
- Constant illumination level
- Energy saving by turning off when not needed
- Time of Day?
 

Thread Starter

pejai

Joined Oct 8, 2012
6
Yes, most of us understand that concept -light dimmers in other words.

What kind of automatic control to you imagine using?

What kind of lights do you want to control?

What do you want to control the lights?
- Constant illumination level
- Energy saving by turning off when not needed
- Time of Day?
PIC microcontroller...
i want to control incandescent lamp...
for energy saving by turning off when not needed...
 

wayneh

Joined Sep 9, 2010
17,496
i hope you understand what i say...=)
I absolutely don't.

You need to specify exactly what you want, just as if you were writing the computer program to control the light. Imagine a person as your employee controlling the light. What would you tell him to do?

If you want the light to come on when the room goes dark, it will stay on forever after that, since it will never be dark again until the bulb burns out.

You said you want something between on or off - a dimmer. How would your light-controlling employee decide how to dim the lights properly?
 
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