Diy Led

[SLIM]

sorry here they are again but a bit bigger lol
yea so which diagram is the right one??
 
Fig 1

Fig 2

Fig 3

and finally the last 2 as mentioned before
 
Fig A

Fig B

 

[ech0o]

The way I have always seen it was negative to positive.

 

[SLIM]

The way I have always seen it was negative to positive.

Thanks that exactly what I needed to know.

Another question. LED lenses seem to be rated in degrees.
These are 60º http/www.ebay.co.uk/itm/5pcs-x-60-20mm-1w-3w-5w-High-Power-LED-Lens-/251304955166?pt=UK_Home_Garden_Wall_Lights&hash=item3a82f14d1e

These are 45º http/www.ebay.co.uk/itm/10pcs-1W-3W-High-Power-LED-45degree-LENs-Black-Holder-for-DIY-/230978223148?pt=LH_DefaultDomain_0&hash=item35c75ffc2c

What does this mean? And what degree is best or aquarium lighting?

 

[SLIM]

Anyone?

 

[DrRob]

Sorry, been busy in real life and didn't spot this one.
 
The degrees is beam angle. So a 45 gives a narrow beam, 60 gives wider.
 
The best really depends on your set up. Wider beams cover more of the tank with less lights but don't punch to the substrate to well and spill light more if they're raised. Narrower beams give more punch to the substrate but you need more to get the coverage without areas of light and shadow, creating a spotlight effect more.
 
It all depends on what you're trying to achieve, how high your light is going to be and what you like the look of.

 

[ech0o]

^ what DrRob said!

 

[SLIM]

Thank you

 

[targett]

Im glad i found this, i work in electronics so might just have to give it a go myself