[guvoo]

Originally Posted by rives

Wow, I like those a lot! Nicely done. Have you had the opportunity to use them yet?

honored by the Master of DIY, hope i can handle this
i started a real world test in June.
seeds under one panel for the first 4 weeks. AF; 18/6 in soil
now there is one plant under 2 Panels(60W) and she is filling up my Growbox. plant size 45 x 50 cm height 50 cm.

[guvoo]

Originally Posted by tenthirty

guvo, have you put a meter in series with the circuit to measure the current?

[repuk]

Hi!

Originally Posted by tenthirty

144w for the 1.5" heat sink hits me as being a bit much. I would go with the 4" wide one, though your real power draw at the LEDs will probably be closer to 100w. It's going to take 2 of the Mean Well drivers, each maxing out at 60w per driver.
Check out the spec sheets and do the math.
https://www.rapidled.com/mean-well-lp...urrent-driver/

I'm not going to buy the heatsinks for them, shipping would be too much. Gonna source the heatsinks localy or build my own using aluminum profiles.

I'm going to buy just the drivers and the LEDS plus other small parts from them.

As far as lenses go, I'm starting out with none. So that is a "we'll see". The spec sheet for the LEDs calls out a 120 degree angle, but the graph shows that they really start to drop off at about 90.

This also brings up the viability/usability of diffuse light.
IMHO, I'm thinking that we want to share the light from all of the leds, apposed to having 18 little spot lights. The cumulative advantages to having multiple HPSs' is well know.

Just say'in.

What about the X2-X3 "magnifier optics" HGL are using?

Can't wait to see pics of the build process/finished LED Lamp, measurements, etc tenthirty!!

[guvoo]

these are the lenses i use

https://export.rsdelivers.com/product...d/7208933.aspx

[vukman]

Thank you so much for your sharing of this great and wondering knowledge....Big Thumbs up man!!!!!!!!

[vukman]

Originally Posted by repuk

Hi!



I'm not going to buy the heatsinks for them, shipping would be too much. Gonna source the heatsinks localy or build my own using aluminum profiles.

I'm going to buy just the drivers and the LEDS plus other small parts from them.



What about the X2-X3 "magnifier optics" HGL are using?

Can't wait to see pics of the build process/finished LED Lamp, measurements, etc tenthirty!!

Hiya... I found a site called the 'Metal Supermarket'..

https://www.metalsupermarkets.com/MSC-home.aspx

^^^^^^^^^^^^^^^^^That is the Canadian site so you might have to change locations. I don't know, nor do I want to know..where anyone lives...(just safer that way).....

I know for the Canadian, it works via postal codes.. I'm guessing it's the same for US site...zip codes that is.....check it out...might be one close to you locally that might have heat sinks.. I know my local one has aluminium sheets but I have to call to see if they have 'finned' stock or know where to get a piece which would suit me needs. I know it's not necessary but would be preferable..

Good Luck

[rives]

Originally Posted by guvoo

View Image
View Image

these are the lenses i use

https://export.rsdelivers.com/product...d/7208933.aspx

Has anyone seen these on this side of the pond? I haven't been able to find anything here wider than about 60 degrees, and these look like they would be close to ideal for my application.

Guvoo, I'm very impressed with your usage of the extrusions and the plates to build the fixture enclosure. Beautiful execution, it looks commercial-quality. Do your MCPCB stars have zeners across the power leads? I would be a bit concerned about the inductive kick from the fan motors on the led power circuit, I think.

[guvoo]

I would be a bit concerned about the inductive kick from the fan motors on the led power circuit, I think.
you see the diode between the Leds and the Fans?

[rives]

Originally Posted by guvoo

you see the diode between the Leds and the Fans?

Yes, I did. I'm kind of a belt & suspenders type of guy.

[guvoo]

and now the lady


a little bit younger