Custom COBCRETE
- Thread starter welight
- Start date
If it's cheap it would be useful I wouldn't pay more than $30 for a chip like thatDoes this make sense as a product here
28mm COB footprint with Cree Discrete diodes, ie Deep Red, Far Red, Green, Blue, Royal Blue, UV etc, 52 Volts up to 100 watts?
well Im building some
Cheers
Mark
OneHitDone
Well-Known Member
I like, can get everything under one lens for proper blending 
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Danielson999
Well-Known Member
Considering these are a specialized cob I would pay more for them. Mix 1 of these cobs with 2 or 3 regular cobs and it's an easy way for guys to add UV, deep/far red etc.
xX_BHMC_Xx
Well-Known Member
No. Seems to me the point of using discrete diodes would be to spread them out for more even coverage.
CobKits
Well-Known Member
if its cost effective sure.
i have the feeling at the end of day for a given cost light quantity>light quality and it would be hard to compete with the assembly lines cranking cobs out
for supplemental lighting /spectrum tuning it would seem to be advantageous to use same mounting as cobs
i have the feeling at the end of day for a given cost light quantity>light quality and it would be hard to compete with the assembly lines cranking cobs out
for supplemental lighting /spectrum tuning it would seem to be advantageous to use same mounting as cobs
welight
Well-Known Member
yes I am not sure how cost effective however I can see some advantages in having non COB colors, but a speciality item rather than mainstream
CobKits
Well-Known Member
to be honest the marketability of such a product kind of depends on whether the trend goes toward cobs or boards
i will say there is a gap in your product line between the 3-up star boards and the 15 linear strips and then solskin where this could fit
Q for you: what does the efficiency of an XPE vs a 561C look like on a cost basis. assuming in most of our applications we are NOT filling up the pcb with diodes and have room to work so lumen density of the emitter is off the criteria list
for example without doing the math i see that a chillled uses 561C for white but then the smaller xpe-style diodes for colors. i assume for white light the larger 561C are cheaper at a given efficiency?
i will say there is a gap in your product line between the 3-up star boards and the 15 linear strips and then solskin where this could fit
Q for you: what does the efficiency of an XPE vs a 561C look like on a cost basis. assuming in most of our applications we are NOT filling up the pcb with diodes and have room to work so lumen density of the emitter is off the criteria list
for example without doing the math i see that a chillled uses 561C for white but then the smaller xpe-style diodes for colors. i assume for white light the larger 561C are cheaper at a given efficiency?
Which way would you guess the trend will go?
Photon Flinger
Well-Known Member
And the cycle starts over.....
blurple4tw!
blurple4tw!
CobKits
Well-Known Member
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Stephenj37826
Well-Known Member
Does this make sense as a product here
28mm COB footprint with Cree Discrete diodes, ie Deep Red, Far Red, Green, Blue, Royal Blue, UV etc, 52 Volts up to 100 watts?
well Im building some. Its the old story, just cos I can doesn't mean I should
Cheers
Mark
It makes sense. The question to me is cost value. Domed leds of course have a different radiation pattern. If these have a tighter beam angle similar to using an optic with cob one could justify the extra cost involved.
Greengenes707
Well-Known Member
Yes, makes total sense. They give tunability and the can get efficacy really up at lower currents. But the price/cost compared to other platforms like COB's is not exactly there. Almost 50% more cost for the same efficacy sometimes. So in the raw efficacy : price race, it's not a great choice. But if spectral signals/specialization is needed, it's very convenient to just drop it into a rig ready for COB's.
We have been making something similar for a little bit and has been working real well and made some spectrum chasing growers very happy. 36 chips 3535, in 36v or 50v configurations. Thermally perform very well, but we use a copper version. Blending is good and cob lens options all work great.
They come out between 1.9-2.0µmols/w depending on Tc ability of the build for ~100w of dissipation(same as a vero b and c for 20-25$). But creep to ~2.5µmols/w in the 40-50w range, and are as good of efficacy as anything pretty much, but cost again.
EDIT:
@welight Have you got your hands on some of the XD16 yet? I haven't. The new XD16 chips could/should make these designs easier and maybe cheaper to get efficiency up.
We have been making something similar for a little bit and has been working real well and made some spectrum chasing growers very happy. 36 chips 3535, in 36v or 50v configurations. Thermally perform very well, but we use a copper version. Blending is good and cob lens options all work great.
They come out between 1.9-2.0µmols/w depending on Tc ability of the build for ~100w of dissipation(same as a vero b and c for 20-25$). But creep to ~2.5µmols/w in the 40-50w range, and are as good of efficacy as anything pretty much, but cost again.
EDIT:
@welight Have you got your hands on some of the XD16 yet? I haven't. The new XD16 chips could/should make these designs easier and maybe cheaper to get efficiency up.
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nc208
Well-Known Member
I think if you added a diffuser to it your color blending will be much smoother.Does this make sense as a product here
28mm COB footprint with Cree Discrete diodes, ie Deep Red, Far Red, Green, Blue, Royal Blue, UV etc, 52 Volts up to 100 watts?
well Im building some. Its the old story, just cos I can doesn't mean I should
Cheers
Mark
Is this to replace a cob or to add extra spectrum that you feel cobs are missing?
xX_BHMC_Xx
Well-Known Member
It would be cool if there were maybe 3-4 channels on each board. But then they wouldn't work with any cob holders...
Built-in optics are a nice feature. Like CK said, it really depends on cost I guess. Seems to me like these would be a good retrofit for people who already have a lot invested in COBs, but really want that bump in 660, or 385, or whatever. Custom orders would allow almost infinite tweaking, but would be a giant pain in your ass to manufacture I assume.
On a side note. It's nice to see GG rocking the harbour freight drill press
Built-in optics are a nice feature. Like CK said, it really depends on cost I guess. Seems to me like these would be a good retrofit for people who already have a lot invested in COBs, but really want that bump in 660, or 385, or whatever. Custom orders would allow almost infinite tweaking, but would be a giant pain in your ass to manufacture I assume.
On a side note. It's nice to see GG rocking the harbour freight drill press
OneHitDone
Well-Known Member
Will you be offering these in your bar lights?
Any spectrum data you could share on what has been tested?
CobKits
Well-Known Member
ive got that same one. like $70 in 2004. just wont die.On a side note. It's nice to see GG rocking the harbour freight drill press
Abiqua
Well-Known Member
I used mine recently to fabricate aluminum blocks for repairing a firewall in my truck, lol....Love my little guy