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V 1.2.1 Added a reflow control pad on the bottom left and a 3.0x2.4 cm logo in the middle Yes, 40 cm is too long for a small oven. Unfortunately I don't have a hotair gun. I want to do it as easy and clean as possible. With the Metal Core PCB it won't heat up enough with just the hothair...

I saw these two before I was starting blueprinting: Reference pads (09:21); electric oven reflow soldering (10:51) inductive cooktop reflow soldering (07:39) I think I will go with a convection oven and figuere out it's actual temperatures according to set temperatures with a cooking...

Nice rig, how many W is that? Did you buy them assembled or how did you solder the FR-4? Where you able to reflow solder without damaging the soldermask after the test run? I'm also considering a hot plate but I don't have a infinitely variable plateau like hot plate available, only infinitely...

Hm, maybe I'll try with bottom heat then. To have a test run is a good advice, thanks. Do you have a picture of your light or a link?

V. 1.2 Thanks, that's very helpful! I won't go over 1 oz copper or with copper core because both are way more expensive and I think copper core could be to soft a metal with the board length. Will consider the temperature thoughts on the reflow soldering but I think with an convection oven...

This is my basic 3535 footprint. I used the one suggested by Osram for their Oslon Square/SSL series as model. https://dammedia.osram.info/media/resource/hires/osram-dam-5537535/LUW CQAR (EQW)_EN.pdf e.g. Copper is higher heat conductive then aluminium so I will expand the copper planes around...

Nice you can find joy in the project. It will be Aluminium, Metal Core PCB (MCPCB). All 3535 are Samsung LH351H, the pad designs are in the data sheets in post #31, (lh351h_red_rev1-2_8-20-18-pdf, page 8 e.g.). I don't know whether we mean the same with "ground", I still have to figure out a...

Version 1.1 (the GND pinns are connecting the heat pads from the 3535 LEDs to a copper plane) (added boxes to mark the strip's position in the grow light (Far Reds on 2nd and 4th)) I will redesign the in-block (3030) connections and copper fills for more efficient heat dissipation and try...

The number and positions of the Far Reds and their two-mode function dictate a lot of the wiring setup. I have the new wiring on paper, will do the new PCB layout soon.

Thanks man, really appreciate the time and effort. Exactly how it went :D had the parts and the grow space dimensions and then went back and forth adjusting to a 5 pcs -PCBs light due to minimum order at the PCB manufacturer, fizzling with different constellations (lowest PCB pc dimension...

Well, hit me right away, where do you see them? I'm here to learn ;) I'm using KiCad, but there was none showing up. I'm at amateur lvl, don't know my way around representing electrical properties in KiCad. For example how to let electricity flow through an LED footprint (contacts are seperate)...

For maximum juice, I'd suggest HLG-480H-42A Mean Well Driver ............. V Adj.: 35.7 ~ 44.1 V ............ Io Adj.: . 5.7 ~ 11.4 A ...... CC region: 31 - 42 V $ 132.28 / 111,68 €

Thoughts and Advice + datasheets The indicated If_max values correspond to the maximum If_values given by the manufacturer. It is therefor possible to run the system at these currents. The higher A values dictate higher Vf values and therefore lead to higher wattage consumed. At the same time...

FINAL VERSION Schematic and 3D model of one 400x60 mm / 15.75x2.36 " strip: Stats: ..................... 3 Strips parallel ... 5 strips parallel If_opt .................. 58 W ....................... 97 W If_1.5*opt .......... 88 W .................... 146 W (120 W max in my setup) If_2*opt...

I don't know whether the GND and VCC are selected right, they shall just symbolize positive and negative poles. Also, the last sentence from the post before is superfluous. For now I have a series model calculated that satisfies almost all requirements that I applied. I considered the following...

I have a first schematic scribble and some more questions: The diodes in 5x3 segments are all 65 mA V_f, the ones in series are all 350 mA I_opt, but different V_f. GND1 and GND2 are either connected to a rocker switch that is connected fix to the drivers cathode or they will be fix poke-in...

Here is what started my interest in DIY LED grow lights from PCBs: PC-case grow looking forward to also pick up on the automation ideas in hydroponics and light cycles. He has open sourced his .stl for a 3D printable design for self made carbon filter cases for PC-case grows. PCB LED light...

Fantastic! Or what function does a multimeter need to have to test them, is "diode test" just giving some electricity or is it also giving voltage / current values? Two illustrative simple videos about current and voltage, and resistors This video of a series about LED drivers shows the...

How to best test SMD LEDs? Could I put a test footprint on the board and lay them on top loosely or would the measurements differ when soldered?

Could an admin please exchange this part in post #18: "λ, part number, V_f, I_f, I_opt, I_max 451 nm, 350 mA I_opt WW, 700 mA I_opt WW, 350 mA I_opt 640 nm, 350 mA I_opt 660nm, 350 mA I_opt 730nm, 350 mA I_opt (will be edited, all work went down the drain when I hit some key by accident :x )"...