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Help!!!!!

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Tish2uk

New Member
Hello, I was wondering if anyone can help me...

I'm currently doing a project where i want a light to come on when someone walks past a sensor.

I have this LED 'LXHL-MWEC' it needs to be something like this light because of what I'm using it for and I have no idea where to go from here. How I connect it up to a sensor and how I power it? What I even need!?

If anyone could help me with what type of sensor would be best that would be great too, it would need to work in darkness!

Sorry about this, I haven't touched this kind of thing since school!

If anyone can help that would be great.

Thank you
Tish :D
 

MikeMl

Well-Known Member
Most Helpful Member
Here is the LED. So you need a sensor that detects absence of light and it is capable of switching a 350 mA constant-current on.

What is your supply voltage?

Do you have a Buck-Puck or similar constant-current LED driver or are you expecting to build one into the light sensor?

How handy are you with opamps, comparators, buying components, wiring, etc?
 
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Tish2uk

New Member
Thank you for the replies!
Basically I'm a Graphic Design student at University experimenting with light so I don't know much about this stuff other than what I can remember from school. So I need a step by step guide on everything that will get this bulb to light up!

I'm happy to research into this but I have no idea where to start!

The only thing I know is that the bulb I want to use as I found it in this torch Duracell LED Spot Light Torch

**broken link removed**

I took the torch apart and the bulb is perfect for projecting my design but from here I don't know where to go! :(
 

ericgibbs

Well-Known Member
Most Helpful Member
hi,
Unless you are committed to using a light beam break I would use the PIR method as stated by 'Roff'.:)
 
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