klx
Well-Known Member
Yep, and its USD $11. He said he would break them into tray quantities but then they are $16 a piece.
Cheap and Cheerful DIY using Citizen cobs
- Thread starter JorgeGonzales
- Start date
Zulunature
Well-Known Member
Malocan
Well-Known Member
hi,
yeah you can veg and flower with the same cob light, 3500k would be a good choose
Thanks! I have a 2x2x4 tent and need to upgrade the light (have a cheap Chinese blue-red led panel right now. Still trying to wrap my head around using so little wattage with great yields.
OLD MOTHER SATIVA
Well-Known Member
not citizen
they are next i hope
nichia 130b ,TE connetcivity holders,Mingfa Heatsinks
now all,we need to is get wires in them and snap em together without breaking them like "eggshells"
then we will see how well the mingfa's cool
thanks to Jorge and all who helped !!
they are next i hope
nichia 130b ,TE connetcivity holders,Mingfa Heatsinks
now all,we need to is get wires in them and snap em together without breaking them like "eggshells"
then we will see how well the mingfa's cool
thanks to Jorge and all who helped !!
Organic Miner
Well-Known Member
Which Mingfa heat sink is that? I am currently considering 2 of theirs for my 1212's? How long did it take to get them; I have been quoted 3 weeks?
OLD MOTHER SATIVA
Well-Known Member
EtraLED-NIC-11050 Nichia Modular Passive Star LED Heat Sink Φ110mm
..says for 46 w i will use 37.x[ i think]
everything done in hands within 2 weeks, fast, well packed..
what wattage are you gonna run the 1212's
Organic Miner
Well-Known Member
Great to know! I'm about to drop $1K on heat sinks and I want know they can deliver. They definitely have good prices.
OLD MOTHER SATIVA
Well-Known Member
dunno when i will get one assembled ....
i am in fishing mode but they are enticing i was able to remove the cob without it breaking..now
i just need wire and screws
.i have a temp gun so i will at least be able to get some kind of reading..
those other brand multi tiny pin sinks may be better..yeh the prices are good
the service was good..they are sturdy
i am in fishing mode but they are enticing i was able to remove the cob without it breaking..now
i just need wire and screws
.i have a temp gun so i will at least be able to get some kind of reading..
those other brand multi tiny pin sinks may be better..yeh the prices are good
the service was good..they are sturdy
OLD MOTHER SATIVA
Well-Known Member
TE CONNECTIVITY
2213580-1
update
i checked
it looks slick the way the wires go in the side of the holder
i was able to snap it in and pry it out and not break
its a start
2213580-1
update
i checked
it looks slick the way the wires go in the side of the holder
i was able to snap it in and pry it out and not break
its a start
Last edited:
robincnn
Well-Known Member
@JorgeGonzales This is from digitized SPD i got from Citizen. Plugged that into Alesh's math doc 380-780nm
3000K 80 CRI 1825
3000K 90 CRI 1825
3000K 80 CRI 1825
3000K 90 CRI 1825
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JorgeGonzales
Well-Known Member
You are awesome Robin. Let's compare!
These are what I got digitizing the charts. I literally did the 3000K 90CRI last night, although like I said privately it was so buried on the chart I didn't think it would be all that accurate. But I was thinking about buying some 90 CRI 3000K CLU028s...anyway:
3000K 80 CRI:
3000K 90 CRI:
So I was right, not as accurate on the 90CRI. Off by ~1.5%. But the 80 is really good, fraction of a percent difference between real and actual numbers. That's great.
If you have the rest of the SPD data I will update my spreadsheet/simulator front end with more accurate data. I planned on starting a thread with that info sometime soon, more accurate data would be welcome.
JorgeGonzales
Well-Known Member
Oh this also means we can accurately compare umol/J between 80CRI and 90CRI according to more official numbers.
At 2250mA, 117W:
80 CRI 149lm/W is 45.5% efficient, 2.21 umol/j
90 CRI 123lm/W is 43.4% efficient, 2.1 umol/j
I got closer numbers at 3500K, almost identical, hopefully they are fairly accurate. But it looks like 3000K 80 CRI is about 5% more efficient in total flux. And of course that's total flux, not PPF.
Neat.
At 2250mA, 117W:
80 CRI 149lm/W is 45.5% efficient, 2.21 umol/j
90 CRI 123lm/W is 43.4% efficient, 2.1 umol/j
I got closer numbers at 3500K, almost identical, hopefully they are fairly accurate. But it looks like 3000K 80 CRI is about 5% more efficient in total flux. And of course that's total flux, not PPF.
Neat.
Organic Miner
Well-Known Member
Lookie what the FedEx guy dropped off yesterday...
JorgeGonzales
Well-Known Member
Couple weeks early! Congrats. That's a beautiful photo.
please do follow up with your build. this certainly builds some suspense!
Organic Miner
Well-Known Member
Will do! Waiting on heat sinks and power supplies. Still need to order holders and reflectors. Haven't decided on framing yet; looking at 80/20 but that gets expensive when you are building 18 units. May see what I can dig up at Home Depot.
Just started new grow; hope to have some new uints installed mid-flower (depending on parts arriving). I will start my own thread once I start building units.