Search results

Nice builds!

I dont advice to drive any board that hard. You can. But should you? You mentioned hanging lights higher: this will make you lose lights to the wall. If youre in a tent theres always height limitation. I added the vid just for laughs, its interesting to see how hard you can drive these...

For the strips. Especially if its the slim version, thise are very flimsy and can break aswell.

Youd need aircooled heatsinking, preferably with a fairly thick base plate. It would lower lifetime somewhat in theory. It would allow but also force you to hang the lights higher. For high wattage qb operation: theres a nice primer on youtube, from ledgardener.

Hello again Lou. Please explain the benefit of running the driver on max voltage, 46ish V, when OPs circuit only requires 40.6V. I only see downsides, higher power consumption (by about 12%) and no safety benefits if he sees string failure. Also 12% more power consumption will mean a hotter...

All seems good to me. A type version has two internal pots, hidden away in some accessible with a small screw driver. Be careful the mecanism can break. Voltage dimming works by adjusting voltage: dimming is much more drastic than by current. Its main functionality for our use it to set a...

Please read the thread you linked to: OP would never give complete details on his grow conditions just saying "everything is perfect". But his grow was cold and he never mentions rh. A lot of the advice in that thread were correct. But op still seems to only blame the light, not his own failure...

OP, as you see there is a lot of focus on environment in the answers here. And magnesium and also calclium. With leds its quite hard to get the plants to transpire enough: You need to dial in temps and humidity according to vpd: vapour pressure deficit, and observe what vpd is good for each...

One thing you could try is hanging a small incandescent light in your tent. Get a little heat and far reds on the cannopy. Watch out though, too strong and youll get a fair bit of stretch.

No. You still got about 9 amps going thru the first positive connection and the last negative connection. Im not sure if it would solve the voltage drop. Maybe but i dont think so. If this is the way you wanted to go you shoulda gotten a cc driver for serial connection. Wait.... its a bit late...

Generally id say yes but each situation is different. If your close to your max amps its a life saver. If the environment works out fine (watch out for spiking rh in the dark side!) you generally have an easier time to maintain min and max temp as one side is always on creating some heat but you...

I most definitely do! Realstyles was from the older generation of the led section; afaik know he was the first on riu to get Alibaba cobs from Jerry @ kingbrite and confirmed good performance in comparison to Mouser/digikey cobs which really opened up the DIY game for us. For sure, someone else...

Im familiar with the migro tests but i allways thought it was just average ppfd / W at the wall. I dont understand the reasoning for multiplying the area. Did he do that on all his tests? Edit: also, in your example of the High Lights, are you using board watts or at the wall?

I think @torontoke was doing some work like this, low daylight hours.

I wouldnt advice to go that route. It means that you have 200w going thru the first strip (hot connectors!). And if the strips are closely matched to 24V you may see some voltage drop; light intensity diminishing the longer you go down the daisy chain. Try dividing them in at least 2 groups of...

Led-tech.de got the evo h and i think they put them on strips but not very economical, esp if you have to do shipping to US/canada.

Yes, you are my source for that number. The graph is nice, it illustrates how hard its to get efficiency out of a 430nm diode. I know TEKNIK was trying to get decent diodes in this range but couldnt find it anywhere.

Chloro versus macree: you make a very valid refutal of an argument that im not even making. You talk about total photosynthetic efficiency, i talk about chloro absortion peaks, without making any argument re photosynthesis efficiency. My argument is that covering chloropeaks better will improve...

Sorry, i thought i was clear. I talk about its spectrum, blue spike as in the combined blue peak of the two white diodes. Its photon pump is at 437nm iirc , in any case the point is both hlg and mammoth does this, and its a definite value adding feature imo it covers better both cholorophyll A...

Very nice article