New product on amazon?

[roaddog]

https://www.amazon.com/Solderless-Driverless-Spectrum-380nm-840nm-Hydroponic/dp/B07GTLCR4P/ref=pd_sim_86_2/144-1421735-3355732?_encoding=UTF8&pd_rd_i=B07GTLCR4P&pd_rd_r=fc3e2082-37bc-11e9-8361-31a05a5f3960&pd_rd_w=93R5k&pd_rd_wg=qpodi&pf_rd_p=90485860-83e9-4fd9-b838-b28a9b7fda30&pf_rd_r=GQHZ0A5Q9Y2NDANBEYEP&refRID=GQHZ0A5Q9Y2NDANBEYEP&th=1

[Lostscuba]

Doesn’t ship to Canada

[SlowOldGuy]

being u found it on amazon, i doubt it is any good.!

cheap lights end up costing u more then good lights.!!
i m biased tho, i m poor and do not like wasting money.!

[Covertgrower]

Don’t do it @roaddog those driverless COB’s really are junk. Extremely inefficient.

[dbrn32]

@OldSkunk built a pretty extravagant light out of them. Had problems with keeping them cool and low performance. Eventually got into more quality cobs.

[roaddog]

@dbrn32 Heat control seems to be the major deficit in their construction, but my son is urging me to try water cooling. That should be interesting on a high voltage, cheaply made product but more on that later. Also, I would hope the sellers understanding of opto-electronics is better than their command of the english language.

[roaddog]

@dbrn32 Is it possible to go to the posts by @OldSkunk?

[dbrn32]

You bet

DIY driverless COBs test update

I’ve been running a test fixture with 110v AC 50watt full spectrum driverless COBs for about 10 weeks. I am working on a 800 watt light and I am learning what I need to build a reliable and cool light. [1507941851442-808664165] I bought predrilled heat sinks, so I’m stuck with them. [IMG_20171014_150120568] When both lights are running with no cooling they get to 200°F. With cooling fans blowing 25cfm on them, temps are around 120°. I have had 2 lights fail due to high temps. A much bigger …

How many of you growers are using driverless COBs

I’ve been using these cheap “full spectrum” Chinese driverless COBs for a while in a test setup. They don’t have the high intensity that the more expensive DC voltage COBs, but they can be moved closer to the plants without harming them. Surely I can’t be the only one using these. The only info I can find about them is they put out a good light spectrum for flowers.