Aquarium LED lamp, lid, accessory holder
Description
At the end of this project I realized that this LED lamp can be used as general purpose holder for aquarium lid, accessories, LED strips and not only my designed 12V LED circuit boards. See photos for ideas. Included few photos where I show retrofitted old lid'ed aquarium with LED circuit boards. In the aquarium with lid I used aluminum box with polycarbonate clear cover to protect boards from moisture. I chose polycarbonate instead of plexiglas because it can handle higher temperatures. In cases when LED boards are used with 3D printed arms and hang in free air I believe protection from moister will not be that critical. As soon as electric current will start running, board will get warm/hot quickly and any moister will evaporate thus eliminating possibility of corrosion. But I need to test and prove this. Added few photos of my aquatic plants that are gown with these lamps. But I'm more engineer then I'm aquascaper so please... :) Joint glass fork to glass fork M4x20mm bolt is needed + washers + nut. Joint arm to LED holder M4x35mm... Joint arm to glass fork M4x40mm... If you will solder alI LED's you will need some serious cooling because it will be 16W in small board with 10x5cm area or 8W in 5x5cm. There are two board versions, in photos you will see 10x5cm. LED's must be run below 60 degrees Celsius for maximum lifetime. You can guesstimate heatsink size with this calculator https://celsiainc.com/resources/calculators/heat-sink-size-calculator I glued heatsinks to the circuit board using "Silicone Heatsink Plaster / Thermal Adhesive Glue" which you can find at phone/laptop repair shops or buy from eBay, Amazon or Aliexpress. Heatsinks I buy from there as well. You can minimize heatsink volume by using 20x20 or 25x25 cooling fans. They can be found with 12V option and thus connected to the LED power input directly or via resistor to lower rotation speed and noise. LED circuit board manufacturing documentation is attached, upload ZIP archive file to PCB manufacturing site like seeedstudio https://www.seeedstudio.com/fusion.html and you will get cheap and good quality boards. LED circuit board info: Can be dimmed with simple and cheap 12V in line dimmer DC input 12V and power according to the number of LED you will chose to use 10 rows * 3 LED's 10 rows * 1.6 W = 16W 10 rows * 150 lm = 1500 lm LED (4000k 90CRI) part number JE2835BWT-P-U40GA0000-N0000001 Resistor: 22 ohm, 1W, case 2512 (for example RC2512JK-0722RL ) I buy my LED's and resistors from DigiKey or Farnell. You can check on https://www.findchips.com/ for wider scan at different vendors. You can chose different color temperature and CRI index from the same family of LED's. I attached LED datasheet. On page 20 you will find table with different options. I personally use 4000K 90CRI because it has the same "amount" of RED, GREEN and BLUE light. With higher then 4000K color temperature blue starts to dominate.
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