LED Photograpy Light Pannel. From Salvaged LED Strips

I needed a light pannel to start making Youtube videos! So i made it with salvaged LED strips.

• Salvaged/Brand new LED strips, with 8 LEDs in series. Mine were 3528 warm white, high brighness. Be sure to check your LEDs datasheet and calculate apropriate sized resistors.
• 100ohm resistors (This is what worked for mine, but you'll have to calculate your own value if you use different LEDs, different amount in series, or different supply voltage. I think i understand it well enough now to help others, so leave a comment if you need help.)
• 30v Power supply (from old HP inkjet printer).
• On/Off switch
• Reflective tarp (usually used for indoors growing) or you can use reflective tape, just be carefull to not touch any electrical contacts if you use something conductive, like tinfoil.
• 3D printed enclosure: https://www.thingiverse.com/thing:5964314/files Of course, you can also make your own out of common materials if you don't have a 3D printer. This was designed in Fusion 360 as shown in the video.
• 1/4"/20 nut. This is the standard thread on most photography tripods/stands/holders. So you can attach your light pannel to normal photography equipment.

Either get brand new LED strips, or salvage them from retrofit LED tubes as i did. This could be dangerous, as you're dealing with the thin glass tube of the lamp, so do it at your own risk.

As i explained, i initially cut them with 9 in-series LEDs, but ended up changing it o 8 in-series.

Each strip will be soldered in parallel, with the apropiate sized resistors in series with each strip.

I then embed the nut applying some heat with a soldering iron.

Then i add the on/off switch.

Then i line the box with the reflective tarp, and feed the power supply wires trough the hole.

I finish up the circuit, and attach the strips to the box using some electrical tape and some very small drops of super glue.

Then i finish up the lid by gluing the opaque plastic to it.

After gluing the lid to the box, it's done!

As you can see, it lights up pretty good, and will for sure help me with my future videos!