DIY with Quantum Boards
- Thread starter robincnn
- Start date
pop22
Well-Known Member
there are also different compounds for different color temps. I've read there is also a way the now coat a lens with the coating to keep it off the LED and has improved efficiency. A lot of the improvements we've seen in the last few years has been due to improved coatings.
pop22
Well-Known Member
maybe I'm figuring this wrong. and I'd like a link to that info, seems mighty high for a single board
Barristan and pop22 - I could very well be terribly confused - If you would please look at this page - It lists the specs for the 288 rspec and has a lux to ppfd calculator for the 288 rspec.
https://horticulturelightinggroup.com/blogs/calculators/converting-lux-to-ppfd
Then if you would take a peek at the test results done on the QB 288's with ppfd measurements taken at 12" & 18" here. Note: these are for version 1 board. Version 2 is reported to have a gain of 5%. I have not seen number for the 288 rspec.
They got a ppfd at center of 1140 at 12" - I'm measuring even closer at 10"
Thanks a bunch
spelling edits only
https://horticulturelightinggroup.com/blogs/calculators/converting-lux-to-ppfd
| Version | Lumens* | PPF* | Lumens/PPF |
| QB 288 V2 Rspec | 81138.43* | 1256.92* | 64.55337 |
| QB 288 V2 3000K | 80833.17* | 1178.05* | 68.61607 |
| QB 288 V2 4000K | 13421* | 193* | 69.5388 |
| QB 96 Elite V2 | 53840.87* | 810.44* | 66.434 |
They got a ppfd at center of 1140 at 12" - I'm measuring even closer at 10"
Thanks a bunch
spelling edits only
Last edited:
I started to push the wattage and will keep a good eye on them - What is typically the first signs of too much light ? My temps are great - cab 77.5
tops 80 at 57% humidity. They are looking pretty good but the bub size is lacking this time around. 45-50 day stain with 14-16 days remaining
tops 80 at 57% humidity. They are looking pretty good but the bub size is lacking this time around. 45-50 day stain with 14-16 days remaining
Airwalker16
Well-Known Member
Looks like 20+ days from being "ready" to me.
pop22
Well-Known Member
Interesting! I see that I was wrong. That expains why my QB 324 in a 32"x32"x60" tent is great for veg! Here's that tent with the one QB 324 in it
I didn't stop to think that my light is 2 boards sharing that 130 watts. Also, I put my light in a frame that rests on 1x2 screwed to the side of my cab. I have two positions, the highest brings the light to 1.5 " from the top the other about 6" from the top. its at the 6" position, I didn't bother to raise it. Also, though it ;looks darker close to the front, its not, its just the picture. If I could get a pic from the top down you'd see. When this grow is done, i'll put my lux meter in there and see what I get for readings.
I didn't stop to think that my light is 2 boards sharing that 130 watts. Also, I put my light in a frame that rests on 1x2 screwed to the side of my cab. I have two positions, the highest brings the light to 1.5 " from the top the other about 6" from the top. its at the 6" position, I didn't bother to raise it. Also, though it ;looks darker close to the front, its not, its just the picture. If I could get a pic from the top down you'd see. When this grow is done, i'll put my lux meter in there and see what I get for readings.
Barristan and pop22 - I could very well be terribly confused - If you would please look at this page - It lists the specs for the 288 rspec and has a lux to ppfd calculator for the 288 rspec.
https://horticulturelightinggroup.com/blogs/calculators/converting-lux-to-ppfd
Then if you would take a peek at the test results done on the QB 288's with ppfd measurements taken at 12" & 18" here. Note: these are for version 1 board. Version 2 is reported to have a gain of 5%. I have not seen number for the 288 rspec.
Version Lumens* PPF* Lumens/PPF QB 288 V2 Rspec 81138.43* 1256.92* 64.55337 QB 288 V2 3000K 80833.17* 1178.05* 68.61607 QB 288 V2 4000K 13421* 193* 69.5388 QB 96 Elite V2 53840.87* 810.44* 66.434
They got a ppfd at center of 1140 at 12" - I'm measuring even closer at 10"
Thanks a bunch
spelling edits only
Stephenj37826
Well-Known Member
It has more to do with how many photons remain blue vs shorter wavelengths. Think energy lost in conversion is now heat. So even if the identical amount of photons are emitted the cooler cct will run cooler as it has had less of the blue photons "stripped " of energy.
downhill21
Well-Known Member
Would u elaborate?
downhill21
Well-Known Member
TWest65
Well-Known Member
I'm a little confused by "remain blue vs shorter wavelengths". A shorter wavelength is a higher frequency.
Stephenj37826
Well-Known Member
So the blue spike is unconverted. The more conversion you have the more electrons turn into heat. The photon turns into electrons through phosphorescent. Some of those photons recombine to make a photon that has less energy(shorter wavelength). Each photon is it's own subsystem so any electrons that are "lost" turn into heat. Photon A and photon Bs electrons do not interact. So if a blue 450 nm photon ends up being a 660nm deep red photon (shorter wavelength than 450nm blue) all the energy(electrons) left over are now heat.
downhill21
Well-Known Member
Who else is trustworthy for Meanwell drivers? Looks like there may be an inventory shortage & delays, & I don’t know any of these vendors. Glommed onto your Arrow reference, but 11 week lag on driver I’m after.
Humple
Well-Known Member
TRC, Mouser, or Sager are all good options if Arrow is out of stock. (Sager has always given me free shipping, but they don't advertise it.)
downhill21
Well-Known Member
K. I’ve seen all of those out there, but didn’t know if they were legit. That’s exactly what I needed. Merci boucoup.
Be advised that if you order drivers from TRC, you will have to wait a few weeks, but their service is top notch. They claim five weeks for delivery.
What kind of driver are you looking to get?
pop22
Well-Known Member
Arrow, Sager, and Online Components ALL screwed up orders With Sager being the worst: emailed me an OOPS! we're out of stock, when I ordered online they had 100.. Ordered a different driver, the sent me the wrong one! Arrow, sent me the wrong driver and jerked me around for 6 WEEKS getting a refund. I've ordered from Moser several times with no issues at all and excellent customer service for a return of a failed driver. tHey cost maybe a couple bucks more, but I won't order from anyone else!
pop22
Well-Known Member
use findchips.com when searching for drivers, I use it to see what's in stock.
https://www.findchips.com/search/HLG320H -C2100b
https://www.findchips.com/search/HLG320H -C2100b
Humple
Well-Known Member
I've had nothing but positive experiences with TRC, Arrow, and Sager, but I appreciate that you're sharing your own experience. I have yet to order from Mouser, precisely because of their consistently higher prices, but it sounds like their customer service was worth it for you, so that's cool.