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I'm thinking, if I got this problem what would I do about it.(if out of warranty) Can you somehow short the LED by drilling in it and filling it with conducting liquid materials, if not then going through the pcb slowly with a rotating file until you reach the copper, where you solder a wire on...

I say it better to get 3 smaller ones than one big one, the increased flexibility you gain is worth the extra cost. * If one light breaks down you still got two left running. * got a troublesome tall plant, you raise one of the lights. * You change grow room later from a square room to a...

One of the pros of the violet chip could be that since the red is made from blue the chip is not as temperature sensitive as a normal red LED are. It has off course no practical use as a electricity generating device, unless its some weird emergency, where Gastankers only option for charging...

Why buy a panel at 650$ that then sets demands. And another thing the power supply, looks special designed, could be hard to find at replacement especially if the company go bust. Comparing an Apollo 10 and this panel is like night and day to me. The A10 has 10 individual modules that can be...

One of the reasons I bought the Osram LED's was to see if I could avoid reflow soldering and mount them somehow just as its done on the Apollo panels. Then an hour ago I noted this 15 LED module PCB, designed for reflow soldering, and I thought why not drill holes and mount the LED up side down...

I think the images speaks for them self. :-) I had read that LED was photo sensitive but I had not idea that they where fucking solar panels, cool ! :bigjoint: I wonder what MajorCoco & Gastanker's ~100W would produce when exposed to full sunshine.

The pros with resistors is that there are cheap, and comes in range from 0.01 ohm to 20 mega ohm, and can handle wattage from 0.1W to 1000xx kilowats(heating elements) The pros is also it's job turning electricity into heat and making the voltage over it drop. Only cons is its job turning...

That reminds me of this Violet 30W LED chip I saw the other day. 30Watt HIGH POWER LED Emitted Color Violet Chip size 36mil Blue Forward Voltage 32-36V Forward Current 1050mA Luminous Flux 900LM View Angle About 140° Quantity 1 PCS...

Well the first picture in this thread is of such alternative, here is another from the Apollo 6 thread: 6 screws is adding pressure to the round top plate witch add pressure to and hold the lenses witch fix the LED and the pcb firmly to the heatsink, a thin nonconducting tape is covering the...

Hi, If we are talking about this panel, then it's hard to see anything, but if it's reflow soldered, then changing a single faulty LED is a nightmare, and it uses no lenses by the looks of it. http://shop.rhinogrow.com/Grow-Lights_c2.htm For 650$ I think one of these at 600$ will beat the...

Thanks, I'm just having fun learning and teaching, and in DIY LED grow lights all my yearlong LED fetish, interest in electronics-Light-science-energy savings, cannabis consumption and online community have finally rolled into one, so I'm not looking to make money from this. I Looked at...

The UK-Ebay dealer of the chips said that it might need some more voltage before all the LEDs would light up, and thats normally ~true when operating with very low voltage, but I was not, the chip was drawing 250mA, and all other chips worked right from the start. So I put the LED back on the...

Oh I meant in the grow room in general, if each driver is dispensate 10W of heat then 4-5 of them start to look like a heating element.

Just looked and the difference in resistance and calculated what it would mean in loss, and it's not much. I used 3A when using 20ft. 10ft - Gauge 18 - 0.064 ohm *2A = 0,128 voltage drop 2A*0.128V = 0.256 watt loss 10ft - Gauge 20 - 0.162 ohm *2A = 0,324 V...

It's not the voltage but the current that makes a cable warm up and have loss. A typical mains cable (2x0.75m2) can safely handle 10A and can either be used for 12V drawing 10A = 120W or 120V drawing 10A = 1200W (thats why high voltage is used in transmission lines) What voltage a cable can...

I just tried to measure the temperature on the back side of the Osram hyper red LED while it was floating without a sink, i stopped at 55°C 131°F @ 250mA I thought that it would run way hotter than that, okay there is a bit of heat transfer to the sensor via the thermal paste and maybe to the...

Just saw this video, and in the first minute there is a nice round adjustable light chamber, an idea I was thinking about a year ago, but used CFL bulbs. Skip the LED's in the bottom and make the bars out of something shinny and use reflecting mylar in between the bars...

If you had heat problems then the best you could do was to mount all the drivers with thermal paste in a external metal box(old computer chassis) with a slow silent fan blowing on them, and use good mains wires to supply the chips. When I was testing the VL-10 spot the tiny test wires got...

And now reviling the RL10 CLPS with power on. It make a darker ring in the center, don't know if thats good or bad, if the light is very close to the plant- Anyway the lights get confined to something like 70° from the normal 140° and it looks high plastic tech. :-)

A rechargeable spotlight is properly more correct. Here is another one.