I purchased one of these cheap LED panels to light a room. One review suggested that it's important to put a resistor on it, to keep it from frying itself. But, he didn't list what resistor to use.
I've searched around and found a lot of discussions of resistors for individual LEDs. But, I haven't stumbled onto the right page for this situation.
I have a UNI-T multimeter. I saw "Easy way to figure out a LED's Vf in order to pick an appropriate resistor", but putting my multimeter into what I think is diode mode stayed stuck at 0L. (I was careful about polarity.)
This is my first encounter with "forward voltage" so, it's a bit overwhelming.
I understand that you can't give me a definitive answer. But, does anyone have a Scientific Wild Ass Guess? Something along the lines of, probably higher than this. I'd be surprised if higher than that. And, likely around here? Just a ballpark number that has a reasonable chance of being safe?
And, I haven't ever bought something like this. A suggestion or two on a source would help me out.
I appreciate everyone's input. I understand that not having a data sheet makes this a pain. But, this is just a DYI thing, and they're so inexpensive that it's hard for me to pass them up.